A research team led by Professor Kwon Soon-Cheol at Dongguk University has enhanced cathode catalysts' work function and electrical conductivity for developing ultra-high-performance metal-air secondary batteries.

Successfully predicted electrical conductivity and energy level according to the relative fusion ratio.Synthesized high-performance dual-phase electrochemical catalyst, which layered a 6:4 ratio nickel-silver (Ag0.6Ni0.4) on a three-dimensional cobalt-niobium oxide (CoNb2O6) nanocube structure 1.4 times the charging capacity of existing Zn-Air (metal-air) secondary batteries and 3.8 times the stabilityPublished in the latest issue of ‘Applied Catalysis B: Environmental,’ the top international journal in the field of energy and environmentDemand continues to rise as the application fields for secondary batteries, such as mobile electronic gadgets and electric vehicles, expand. While traditional lithium-ion-based secondary batteries have such problems as the risk of explosion and limited charge capacity, Zn-Air (metal-air) batteries have several advantages, such as relatively high energy density, low cost, and high stability, and are regarded as superior secondary batteries when compared to existing lithium-ion batteries.However, a new highly active catalyst was developed because the carbon cathode employed for the air contact surface lacks an efficient electrochemical OER-ORR (oxygen generation-oxygen reduction reaction). As a result, because silver and nickel metals have outstanding electrochemical catalytic capabilities, research was needed to simultaneously improve battery performance and stability by maximizing their physical qualities by manufacturing them into a multi-metal alloy.A research team led by the Dongguk University Department of Energy and Materials Engineering Research Professor Bala (first author) and Professor Kwon Soon-cheol (corresponding author) successfully developed a new dual-phase cathode material catalyst material by layering multi-metal alloy nanoparticles (AgNi, nickel silver) alloyed in a specific ratio on a unique three-dimensional metal oxide nanocube structure (CoNb2O6, cobalt-niobium oxide).Professor Kwon's research team focused on the fact that the relative fusion ratio of AgNi multi-metal alloy catalysts can significantly contribute to electrical conductivity and energy level management and applied "Virtual Crystal Approximation" (VCA) based on density functional theory. As a result, when the relative fusion ratio of silver and nickel is 6:4, the maximum electrical conductivity (σ) is anticipated to reach ~2 x 107 S cm-1 and the work function -5.4 eV.Based on this knowledge, a three-dimensional nano cube structure (cobalt niobium oxide, CoNb2O6) capable of serving as an OER was hydrothermally synthesized. Through successive hydrothermal synthesis, nickel-silver metal multi-alloy nanoparticles in a 6:4 ratio that may play the role of ORR were uniformly stacked on top of this three-dimensional structure. Consequently, the research team could create a novel high-performance two-phase catalyst material.The two-phase catalyst material developed in this manner, in particular, is absorbed into the pores of the existing carbon cathode material, increasing the reaction surface area and facilitating electron, ion, and mass transfer, resulting in higher catalytic activity and Zn-Air (metal-air) battery performance when compared to the existing carbon electrode. The charging capacity of the Zn-Air battery using the two-phase catalyst material was 806.8 mAhg-1, which is more than 1.4 times greater than the 576.6 mAhg-1 of the Zn-Air battery using a single metal oxide catalyst. Furthermore, the charge/discharge performance of the two-phase catalyst Zn-Air battery was 587 hours, 3.8 times that of a single catalyst battery, due to an efficient and balanced OER-ORR reaction (156 hours)."Through this research, we have completed a technology that can maximize and stabilize the electrical and physical characteristics of the metal multi-alloy electrochemical catalyst based on the relative fusion ratio," said Professor Kwon Soon-cheol, " We were able to develop a new high-performance two-phase electrochemical catalyst material using this technology, which is absorbed on the existing carbon electrode to enable efficient/balanced OER-ORR (oxygen generation-oxygen reduction reaction) with a larger surface area, which is significant in realizing an ultra-high performance/stability next-generation Zn-Air secondary battery," and expected, "Because the developed carbon electrode, which includes the two-phase catalyst, operates consistently for 160 hours even in a pouch cell type, we will be able to move a step closer to commercialization of next-generation thin-film or flexible secondary batteries."This research was funded through the National Research Foundation of Korea's senior researcher support project and innovative and challenging research support project. The findings were published online on March 14, 2023, in Applied Catalysis B: Environmental (IF=24.319), the top international journal in the field of energy and environment, under the title <High-performance rechargeable metal-air batteries enabled by efficient charge transport in multielement random alloy electrocatalyst >.<Prediction of energy level and electrical conductivity according to the fusion ratio of AgNi (nickel silver) multi-metal alloy catalyst using “Virtual Crystal Approximation (VCA)”>(a) Prediction of crystal structure change depending on the relative fusion ratio of Ag and Ni(b), (c), (d) Prediction of changes in work function, electrical conductivity, and magnetic movement depending on the relative fusion ratio of Ag and Ni.* For inquiries regarding this material, please contact Dongguk University Professor Kwon Soon-cheol (02-2260-3678, kwansc12@dongguk.edu).

Dongguk University Professor Choi Chang-soon's research team develops high-performance carbon nanotube fibers

(1) Increased energy storage capacity (capacitance) twentyfold while also including energy harvesting characteristics by constructing a carbon nanotube corrugated structure that retains electrical/mechanical performance despite extreme stretchability. (2) Created fiber electrodes with improved mechanical drive and energy storage capacities by activating even the inside of porous carbon nanotube fibers."Published in outstanding academic journals in the field such as ‘Composite parts B: Engineering (IF=11.322, top 1.630% in JCR)’ and ‘ACS Applied Materials & Interfaces (IF=10.383, top 14.058% in JCR)"Professor Choi Chang-soon's research team created corrugated microstructure carbon nanotube composite fibers with up to 600% elasticity for use in conductors, supercapacitors, and energy harvesters.A research team led by Master Yoo Seong-joon (first author) and Professor Choi Chang-soon (corresponding author) from Dongguk University created a multi-functional fiber electrode by loading a carbon nanotube sheet onto polymer fibers to form micro-sized wrinkles on the surface. The carbon nanotube corrugated microstructure created in this way has high elasticity (600%) and conductivity, as well as the ability to form micro-sized pores from the contact surface of the polymer core, allowing for approximately 20 times higher capacitance compared to a plain structure without micro-wrinkles and mechano-electrochemistry-based energy production. The polymer/carbon nanotube corrugated microstructure, which can achieve several performance capabilities in a single structure, can be employed in various fields, including biosensors, energy harvesters, and energy storage devices.'This study is significant in that it demonstrated structural stability, mechanical elasticity, energy storage performance improvement, and energy harvesting in a single structure through the fabrication of the corrugated microstructure of carbon nanotubes,' said Professor Choi Chang-soon.Meanwhile, this research team recently completed another study on fiber-type carbon nanotube electrodes in collaboration with Hanyang University. By electrochemically activating up to the inside of the car's porous structure, a research team led by Professor Choi Chang-soon of Dongguk University's Department of Energy and Materials Engineering (corresponding author) and Professor Kim Seon-jeong of Hanyang University's Department of Electronic Engineering (co-corresponding author) succeeded in developing a carbon nanotube fiber electrode with dramatically improved mechanical drive and energy storage performance. Carbon nanotube fiber electrodes are promising electrode candidates with a wide range of applications because they have excellent mechanical and electrical properties as well as a unique structure that provides a highly effective reaction area due to the dense concentration of millions of nano-bundles aligned in a single direction and nano-micro channels between bundles. However, because of the stability of the carbon-to-carbon network, which does not react well with other materials, there were numerous practical restrictions.The existing technology is an oxygen plasma procedure that uses plasma to functionalize the carbon network exposed on the surface, and it proved unable to activate fiber electrodes with internal structures several tens of micrometers in size. The research team applied electrochemical voltage to tackle this challenge. The nano-micro channel's electrostatic pull and capillary action allow the reactant to penetrate and activate the carbon nanotube fiber electrode down to the deep region of the fiber. The produced fiber electrode demonstrated excellent water reactivity, high hydrophilicity with a contact angle of approximately 38°, excellent rotational driving performance in a humid environment (986 revolutions/m), and a capacitance approximately 25 times more than before treatment (72.8 mF/cm2).According to Professor Changsoon Choi, "This study is remarkable since it activated carbon nanotube fibers as a whole using a new technique known as electrochemical processing. It will be employed as a base electrode in various industries in the future, including soft robots, fabric batteries, and water/wet harvesting, and will represent a technical tipping point that will drastically improve device performance." Researcher Sohn Won-gyeong (co-first author) and Lee Jae-myeong (co-first author) participated in this research.<From left, Professor Choi Chang-soon, Master Yoo Seong-joon, Researcher Sohn Won-gyeong, Researcher Lee Jae-myeong of the Department of Energy and Materials Engineering>The research results were published in the March 2023 issue of 「Composites part B: Engineering (IF=11.322)」, a renowned international journal in the field of engineering, and 「ACS Applied Materials & Interfaces (IF=10.383)」, a journal in the field of nanoscience and technology.

Dongguk University Professor Lim Jung-yeon's research team develops new high-performance robot sensor nanomaterials

The research team of the Department of Mechanical, Robotics, and Energy Engineering Professor Lim Jung-yeon and Ph.D. candidate Kim Yeong-seong developed a new hybrid perovskite nanomaterial whose properties can be regulated by an external electric field at ambient temperature.The material outlined above can also be employed in artificial intelligence via robot sensors, quantum computing, and computer processing capability enhancement. Because it can be utilized for high-sensitivity, ultra-high-speed sensors, it may be used in actuators in various situations to perform precise and efficient robot motion control. Furthermore, mechanical energy can be turned into electrical energy because of the energy harvesting features."This research is instrumental as a sensor for future robots through a new nanostructured material, and in particular, it is planned to be applied to the flying robot being developed by the research foundation CRC Leading Research Center (7 years, 9.75 billion won)," said Professor Lim Jung-yeon, adding, "I expect that it will be used in various fields in the future."The findings will be published in the June 2023 issue of Materials Today Physics (IF=11.021), an incredibly renowned academic journal, as part of the Leading Research Center Project, funded by the National Research Foundation of Korea and the Ministry of Science and ICT, among others.* Journal Title: Multiferroic-field coupling in ultrathin nanofilm halide perovskite at room temperature

Source technology for waste resource photoelectrochemical decomposition using solar energy

The research team led by Dongguk University Professor Lee Jae-joon and the State University of New York Professor Lim Gyu developed the source technology for the room-temperature photoelectrochemical decomposition system for lignin, a lignocellulosic waste.Selected as the cover of Sustainable Energy & Fuels, the highest professional journal in the field of renewable energy conversion○ A research team led by Professor Lee Jae-joon of Dongguk University and Professor Lim Gyu of State University of New York College of Environmental Science and Forestry developed a system capable of photoelectrochemically decomposing lignin, a representative lignocellulosic waste, at room temperature by fusing a photoelectrode system based on a responsive photovoltaic cell and an organic catalyst.○ Unlike the existing catalyst-based electrochemical decomposition method, the joint research team led by Kang Hyeong-Cheol and Kim Saerona (co-first authors) achieved conditions for selective oxidative decomposition even at room temperature by utilizing a photoelectrochemical reaction using an organic dye-based sensitized photovoltaic cell.○ "The results of this study are expected to contribute to the use of various waste resources and the resolution of environmental pollution problems without additional energy consumption in the future by utilizing solar energy for the eco-friendly decomposition reactions of waste plastics and biomass," said Professor Lee Jae-joon.○ The research findings were chosen as the cover study of Sustainable Energy & Fuels, a world-renowned academic publication in the energy field, and were officially released on May 21. (7, 2339-2348) (https://doi.org/10.1039/D3SE00194F)○ This research was supported by the National Research Foundation of Korea's senior researcher support project and climate change response project (Development of Organic Matter-based Solar Cell Source Technology for Urban Distributed Power Generation) as well as the USDA National Institute of Food and Agriculture's McIntire Stennis project.

Inauguration speech of the 20th president, Yun..

​Jongpil Kim, a Professor of Chemistry at Don...

Jongpil Kim, a Professor of Chemistry at Dongguk University, together with colleagues, has developed a novel cell therapy for Alzheimer's disease by analyzing the single-cell transcriptome profile.Jongpil Kim, Professor of Chemistry, Dongguk UniversityThe research team discovered a core subset of stem cells that can be used to treat Alzheimer's disease and contribute to the development of personalized cell therapy for these patients.The findings were published online in Nature Communication, a sister journal to Nature, the world's top academic journal.○ A team of scientists, led by Professor Jongpil Kim of Dongguk University, has identified rare oligodendrocytes in the brains of patients with Alzheimer's disease and mouse models using single-cell-level transcriptome profiling, which may offer the possibility of a new cell therapy for the control and treatment of Alzheimer’s disease. The results were reported in the February issue of Nature communication (IF:17.6).* Oligodendrocytes: Cells responsible for supporting neurons in the central nervous system of vertebrates.○ Using single-cell transcriptome profiling analysis, a state-of-the-art system biochemistry technique, the research team identified rare oligodendrocytes and oligodendrocyte progenitor cells that are specific to Alzheimer's disease. They have named these specific cells, “disease-associated oligodendrocytes (DAOs)”. * Single-cell transcriptome profiling analysis: the latest bioinformatics technique for isolating a “single" cell and analyzing its genomic features.○ In particular, by using pseudo-time analysis to analyze the single-cell data extracted from single-cell transcriptome profiling, the team identified an altered developmental lineage from oligodendrocyte progenitor cells to adult oligodendrocytes that are specific to the progression of dementia.○ Moreover, the team found that theErk signaling pathwayis abnormally activated during dementia progression. Treatment of mice with dementia with a drug that targets the Erksignaling pathway improved their overall cognitive performance on behavioral tests.○ Notably, Professor Jongpil Kim identified the role of similar cell populations in the brain, not only in mouse models, but also in patients with Alzheimer's disease, by applying correlation analysis to data on rare cortical dendritic cells obtained from patients with dementia.○ "This study is significant as it not only confirms the strong therapeutic effect of rare oligodendrocytes in Alzheimer’s disease but also sheds new light on the role and potential of oligodendrocytes and oligodendrocytes progenitor stem cells in the pathogenesis of neurodegenerative diseases," said study leader, Professor Jongpil Kim. "It is also significant that we have secured a new means forstem cell therapythat can be used to treat dementia, a disease for which there is currently no cure."○ The research was supported by the University Focused Research Center Program, the Interdepartmental Regenerative Medical Technology Development Project, and the Samsung Future Technology Development Program.○ The study findings were published in the online edition of Nature Communication (IF=17.9), a sister journal of Nature, the world's top academic journal.* Paper titleSingle-cell RNA-sequencing identifies disease-associated oligodendrocytes in male APP NL-G-F and 5XFAD mice

Research Team Led by Hyunsik Lim and Hyungsang..

Research Team Led by Hyunsik Lim and Hyungsang Kim, Professors at Dongguk University, Discovers a New Quantum Material via Spin Cloud CondensationLeft: Professor, Hyunsik Lim; Right: Professor, Hyungsang Kim- Successful discovery of a new Bose–Einstein condensate (Published in Nature Physics)○ A research team led by Hyunsik Lim, Professor of Physics and Semi-conductor Science at Dongguk University, has discovered and analyzed a new quantum material using the condensates of spin clouds in an ultracold silicon metal.* Spin cloud (also known as a “Kondo cloud”): Free electrons formed to screen the magneticity of a metal or semi-conductor※ Co-corresponding authors: Professor Eunkyu Kim, Professor Sangjin Shin (Hanyang University), Professor Yeonwook Jung (Sungkyunkwan University)Spin clouds play a major role in high-temperature superconductivity. Due to their vanishing resistance, spin clouds enable applications such as levitation trains (maglev) and magnetic resonance imaging (MRI).Despite the theoretical and experimental interest, the study of new quantum materials formed by spin clouds and their interactions in the field of condensed matter physics face many unresolved challenges.While researching quantum computer components, a research team led by Professors Hyunsik Lim and Hyungsang Kim from Dongguk University inadvertently discovered an unusual signal in silicon metal. Upon initial investigation, they suspected it was not an error from the component or measurement device but instead a new quantum mechanical model.Although they faced significant experimental challenges such as the need to measure ultracold temperatures and overcome interpretation problems, which made preceding research on spin clouds extremely difficult, the research team has persisted in their effort since 2015.The team used spectroscopic and electrical conductivity measurements to determine that the observed signal in the silicon metal derived from a new material that exhibited the characteristics of the Bose–Einstein condensate, which is a phase of material discovered in 1990 that follows the solid, liquid, gas, and plasma phases.The research team successfully discovered and elucidated, for the first time in the world, that a new quantum material can be formed by condensing ultracold spin clouds (1[K], -272.15[℃]) using silicon metal.The discovery is expected to contribute to a greater understanding of spin–spin interactions in metals and semiconductors as well as the study of strongly correlated materials, including high-temperature superconductors.* Strongly correlated material: a material that exhibits unusual phenomena not seen in typical conductors and insulators due to the strong interactions between its constituent particles.Professor Lim stated, “If we can create and control another quantum condensed state through this research, it can be applied to quantum device technology.” He added, “Understanding the properties of various spin clouds in response to changes in the concentration of spin clouds in pure metals through follow-up research is important.”The team’s research was supported by the Basic Research Program (mid-career and basic laboratory) of the Ministry of Science and ICT. An article describing their achievement was published* in the international academic journal Nature Physics on February 7 (16:00 GMT, February 6 local time).* Title of the paper: Observation of Kondo condensation in a degenerately doped silicon metal

Dongguk University chosen as “Best University...

Dongguk University chosen as “Best University” in the field of information and communication according to “University Evaluation from the Industry Perspective”Woong-sup Kim, PD professor at the Department of Information and Communication Engineering, takes a commemorative photo after receiving the honor at the awards ceremony. Department of Information and Communication Engineering rated best for two consecutive years following 2017 evaluation○ Dongguk University (president: Yoon Sung-Yee) announced on the 12th that the university was selected as the best university in the field of information and communication at the “2022 University Evaluation from the Industry Perspective” hosted by the Ministry of Education and the Accreditation Board for Engineering Education of Korea.○ Since 2008, the Ministry of Education and the Accreditation Board for Engineering Education of Korea have been promoting talents with convergence and complex capabilities in the era of the 4th Industrial Revolution. To run a curriculum that meets the needs of the industry, the duo conducts a university evaluation from an industry perspective every year. This year, 26 universities and 42 departments across the country were evaluated in four categories, namely information and communication, civil engineering, artificial intelligence, and smart factory.○ The evaluation committee of “University Evaluation from the Industry Perspective” is made up of industry and university officials with an extensive knowledge of the evaluation field. The committee evaluates three areas using 9 indicators: ▲Industry-based curriculum design ▲Curriculum operation, and ▲ Performance of universities (departments). The indicator this year specifically reflected the university's efforts to activate its own industry-university collaboration model to promote future talent.○ Dongguk University’s Department of Information and Communication Engineering attained the highest rating in the information and communication field. It was awarded a certification plaque in the joint name of the Ministry of Education, five economic organizations, and the Accreditation Board for Engineering Education of Korea. Following an evaluation in 2017, it was selected as the best department in the field of information and communication for two consecutive years.○ The Department of Information and Communication Engineering at Dongguk University is working on the “LINC 3.0 Project Industry-University Collaboration Leading Department” and “Project of Fostering Intellectual Property Convergence Talents in New Industry Field.” A department in the graduate school formed under a contract for “Smart Ocean Mobility” facilitates employment with Daewoo Shipbuilding & Marine Engineering upon graduation, starting from the first semester of 2023. ○ Min-joong Lim, senior professor at the Department of Information and Communication Engineering, said, “Dongguk University establishes and operates education policies that reflect industry demand. The results achieved by this university evaluation from an industry perspective are due to the sincere efforts of the university and faculty, and the university will always promote talent that can contribute to the industry in the future.”

“Efficacy of Ganhwa Seon” is the first to be ...

“Efficacy of Ganhwa Seon” is the first to be published in an internationally renowned SCI academic journal(On the left) Monk Jeong Do, Director, Institute for Study of Jogye Order, Dongguk University; (On the right) Yu-ri Kim, Associate Researcher, Institute for Study of Jogye Order, Dongguk University Study by research team of Institute for Study of Jogye Order, Dongguk University published inEvidence-based Complementary and Alternative Medicine○ A collaborative study from the research group of the Institute for Study of Jogye Order, Dongguk University (Monk Jeong Do, Director) was published in the SCI international journal “Evidence-based Complementary and Alternative Medicine.” Yu-ri Kim, an associate researcher, Institute for Study of Jogye Order, Dongguk University is the lead author of “Efficacy of Ganhwa Seon,” which is the first paper to be published in an internationally renowned SCI journal. Ganhwa Seon is a traditional practice in Korean Buddhism.○ The study titled “The Effects of Mindfulness and Buddhist Meditation Coaching on Mental Health Outcomes in College Students” intends to determine whether Dongguk University’s meditation curriculum can be a useful tool in relation to the mental health of university students. It is aimed at university students who participated in the “Self and Meditation” course, a program of Dongguk University, which is a Buddhist missionary institution. It examines the changes before and after 15 weeks of the course and consists of the applied meditation and traditional meditation (Ganhwa Seon) programs. In this respect, it carries academic significance.○ This study, which is the first to examine the combined effect of applied meditation (mindfulness) and Ganhwa Seon, a traditional Korean Buddhist practice, substantiated that the ‘Ego and Meditation’ course significantly improved adult ADHD and self-identity. ○ In particular, in this study, the meditation instructors who teach the courses are one of the strong points of Dongguk University’s unique meditation curriculum. As a drawback, previous studies conducted abroad have highlighted the differences in efficacy of meditation courses due to the varying competence of meditation instructors. In Dongguk University’s meditation curriculum, the instructors, who are monks preparing for the Buddhist priesthood, led the classes by completing the doctoral course at the same university. Moreover, there is an integrated guidebook for conducting the “Self and Meditation” course. This approach to teaching meditation can close the gap between the various meditation instructors for each class, which has been identified in prior studies abroad as a barrier to the efficacy of meditation classes. This can be considered an advantage of the meditation curriculum of Dongguk University, which is a Buddhist missionary university looking for standardization and advancement of meditation teaching approaches. ○ Yu-ri Kim, associate researcher, Institute for Study of Jogye Order, Dongguk University said, “I have been studying meditation coaching from the perspective of practice beyond the functional use of meditation. This issue was discussed during the “Meditation Talk” of the “3rd Seoul International Meditation Expo,” and I am delighted to publish it as a paper. This result, in my opinion, was made possible with the assistance of the supervisor and co-corresponding author Monk Jeong Do, who also serves as the director of the Institute for Study of Jogye Order, Professor Nana Keum of the Department of Food Science and Technology, and Jaewon Gil, co-author and student of the Department of Food Science and Technology. Thank you.” ○ Dongguk University’s Institute for Study of Jogye Order, which opened in March 2011, has been talking about the role of Buddhism in modern society. Monk Jeong Do, Director, Institute for Study of Jogye Order, Dongguk University said, “[We] will play a role in discovering and arranging meanings in various areas such as the Jogye Order of Korean Buddhism, Dongguk University, and the practice, culture, history, and ideology of Korean Buddhism.”

Novel Electrode Material Boosts Supercapacitor..

Novel Electrode Material Boosts Supercapacitor Performance for Electric VehiclesResearchers at Dongguk University have designed and synthesized a novel hybrid composite electrode material that significantly enhances the performance of supercapacitors for use in hybrid electric vehicles (HEVs). This composite electrode is comprised of cobalt selenide nanorod-copper selenide polyhedron-decorated over graphene oxide (CCS@GO) and offers unprecedented electrochemical properties. The researchers demonstrated an ecofriendly, economical fabrication, improved charge storage and retention, increased energy and power density attributable to the unique morphology of the electrode material.Next-generation electronic devices and hybrid electric vehicles (HEVs) need excellent charge storage devices to function well. Currently, majority of the charge storage devices are made from conventional metal sulfide or metal oxide-based supercapacitor electrodes. However, poor electrical conductivity and low energy density are major challenges in the use of supercapacitors, limiting their commercial applications. In contrast, transition metal selenides offer several enhanced electrochemical properties due to their in-built advantageous physicochemical properties including high chemical stability, a narrow bandgap, and low electronegativity that leads to a faster electron-conducting rate than that of metal sulfides and oxides. “A composite formed by the combination of metal selenides and carbon template is a fascinating approach to tune the properties of electrodes for electrochemical applications. Based on this idea, we have designed and constructed a new hybrid composite electrode comprising cobalt selenide nanorod-copper selenide polyhedron-decorated over graphene oxide (CCS@GO), using a wet-chemical strategy”, explains Professor Hyun-Seok Kim from the Division of Electronics and Electrical Engineering, Dongguk University, Seoul, South Korea, who has been actively researching 2D materials and nano- and micro-electronics for energy and sensor devices.In a recent article made available online on August 9, 2021, and published in volume 427 of Chemical Engineering Journal, Prof. Kim and his research team demonstrated that the resultant composite electrode provides abundant space for migration of ions, and allows swift faradaic redox reactions leading to high storage performance in an electrochemical cell. The team attributed the enhanced electrochemical features to the unique morphology and high surface area of the novel electrode material. They established that the synthesized electrode has outstanding electrochemical charge storage and retention properties. Using the electrodes, they constructed an asymmetric supercapacitor device with a capacitance of 192.8 Fg-1 @ 1A g-1; energy density of 54.6 Wh kg-1; power density 700 W kg-1, and capacitance retention of about 82.5% over 10,000 cycles. “We achieved our ultimate goal of constructing an electrochemical supercapacitor with improved electrochemical activity and long-term durability,” notes an excited Prof. Kim.Moreover, the team employed an ecofriendly, cost-effective, energy-efficient, wet-chemical fabrication method with earth-abundant copper and cobalt source materials for developing the new electrodes. Taken together, this development paves the way for user-free, non-flammable energy storage materials for next generation electronic and electrical devices.ReferenceAuthors: K. Karuppasamy1, Dhanasekaran Vikraman1, Sajjad Hussain2, Ganesh Kumar Veerasubramani3, P. Santhoshkumar4, Sang-Hoon Lee1, Ranjith Bose5, A. Kathalingam4, Hyun-Seok Kim1Title of original paper: Unveiling a binary metal selenide composite of CuSe polyhedrons/CoSe2nanorods decorated graphene oxide as an active electrode material forhigh-performance hybrid supercapacitorsJournal: Chemical Engineering JournalDOI: 10.1016/j.cej.2021.131535Affiliations: 1Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea 2Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea 3Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea 4Millimeter-Wave Innovation Technology (MINT) Research Center, Dongguk University-Seoul, Seoul 04620, Republic of Korea 5Department of Chemical Engineering, Khalifa University, Abu Dhabi 1277*Corresponding author’s email: hyunseokk@dongguk.eduAbout Dongguk UniversityDongguk University, founded in 1906, is located in Seoul, South Korea. It comprises 13 colleges that cover a variety of disciplines and has local campuses in Gyeongju, Goyang, and Los Angeles. The university has 1300 professors who conduct independent research and 18000 students undertaking studies in a variety of disciplines. Interaction between disciplines is one of the strengths on which Dongguk prides itself; the university encourages researchers to work across disciplines in Information Technology, Bio Technology, CT, and Buddhism.Website: https://www.dongguk.edu/eng/About the authorDr. Hyun-Seok Kim (PhD, University of Wisconsin-Madison, USA) is a Professor who teaches at the Division of Electronics and Electrical Engineering at Dongguk University, Seoul, South Korea. His research interests include 2D materials and nano- and micro-electronics for energy and sensor devices. Prior to his current role, he served as a post-doctoral researcher at the University of Wisconsin-Madison and a senior R&D engineer at Intel Corporation, USA. In recent times, along with his colleagues, particularly Dr. K. Karuppasamy and Dr. Dhanasekaran Vikraman, Dr. Kim is actively developing 2D-material-based nanostructures for energy storage and conversion applications.