October 2025

• Prof. Kiho Bae (KenTech) and Prof. Mingi Choi (SeoulTech) visited our group. We had a research meeting about NH₃ cracking study and the following research proposals. Thank you for your visit!

• Welcome! Jimin has joined our group as an undergraduate research intern.

September 2025

• Prof. Junmo Koo in the Department of Mechanical Engineering at National Korea Maritime & Ocean University (KMOU), South Korea, visited our group. We are looking forward to collaborating with Prof. Koo. Thank you for your visit!

• Congratulations! Our group joined Semiconductor Specialized University Support Program at Sogang University in South Korea.

• Congratulations! Jeong Research Group (JRG) has begun a new journey at Sogang University in South Korea.

August 2025

• Prof. Gwon Deok Han from the Department of Mechanical Systems Engineering at Sookmyung Women's University (South Korea) and Dr. Beum Geun Seo from the Department of Mechanical Engineering at Korea University (South Korea) visited our group. We look forward to future collaborations with their groups. Thank you for visiting!

• Congratulations! Our study, in collaboration with the Argonne National Laboratory (ANL) in United States, "Reactivity of Carbonate Solvent Electrolytes on Lithium Silicon Anode" has been accepted in ACS Applied Materials & Interfaces.

• Congratulations! Our study, in collaboration with the Agency for Defense Development (ADD) in South Korea, "Comparative study of Ta and Ga doping effects on Li7La3Zr2O12 garnet electrolytes for advanced thermal battery applications" has been published in RSC Advances. DOI link: https://doi.org/10.1039/D5RA03917G

July 2025

• Heonjae and Juyoung were invited to KenTech (South Korea). We had a research meeting about NH₃ cracking study with Prof. Kiho Bae (KenTech) and Prof. Mingi Choi (SeoulTech). We are grateful to Prof. Kiho Bae for the invitation.

• We had a monthly research meeting with the Agency for Defense Development (ADD) in South Korea.

• Heonjae participated in the Thermal Engineering session at the Korean Society of Mechanical Engineers (KSME) conference, held in Daejeon, South Korea.

June 2025

• Welcome! Junsung joined our group.

May 2025

• We had a group workout and outing. Thank you for your contributions.

• Congratulations! Our study, in collaboration with Pacific Northwest National Laboratory (PNNL) and Washington State University (WSU) in the USA, “Thermal Decomposition Pathways of Bulk Electrolytes on Vanadium Oxide Nanocrystals”, has been published in Energy Storage Materials. DOI link: https://doi.org/10.1016/j.ensm.2025.104315

• Congratulations! Our group joined Battery Specialized Graduate School Support Program at Gachon University, in South Korea.

April 2025

• Heonjae participated in the Thermal Engineering session of the 2025 Korean Society of Mechanical Engineers (KSME) Spring Conference, held in Jeju, South Korea.

• We had a monthly research meeting with the Agency for Defense Development (ADD) in South Korea.

• Our group delivered two oral presentations “Computational Prediction of Solvation Structure in Calcium Battery Electrolytes” and “Prediction of Carbonate Solvent Stability on Lithiated Si Anode” and presented two posters titled “Interfacial Reactivity and Thermal Stability of Molten Salt Electrolytes with FeF3 Cathode in Thermal Batteries” and “Influence of Interstitial Cluster Families on Post-Synthesis Defect Manipulation and Purification of Oxides Using Submerged Surfaces” at the 2024 MRS Spring Meeting in the United States.

• Congratulations! Our study, in collaboration with UIUC (USA), on "Reactions of Fluid and Lattice Oxygen Mediated by Interstitial Atoms at the TiO2 (110)-Water Interface" has been published in Physical Chemistry Chemical Physics. DOI link: https://doi.org/10.1039/D5CP00319A

• Welcome! Jisu joined our group.

March 2025

• We had a group outing this Spring semester. Thank you for your contributions.

• Our group members (Myeongjae, Junghun, Juyoung, and Seonwoo) were invited to Synopsis in South Korea to attend a workshop on QuantumATK software. We are grateful to Daniel Wang for the invitation.

• Congratulations! Our group joined BK21 Phase 4 Intelligent Semiconductor Project at Gachon University in South Korea.

February 2025

• We held a graduation ceremony for Myeongjae, Junghun, Taewook, and Juyoung as they received their bachelor's degrees from the Department of Electronic Engineering at Gachon University. They will transition from undergraduate to graduate researchers in our group, and we look forward to their future accomplishments.

• Dr. Hyunkyu Moon from the Korea Institute of Machinery and Materials (KIMM), South Korea, visited our group. We are looking forward to collaborating with KIMM. Thank you for your visit!

• Heonjae was invited to Synopsis in South Korea to attend a workshop on QuantumATK and TCAD softwares. We are grateful to Daniel Wang (Synopsis Korea) and Prof. Kang-Hyun Baek (Gachon University) for the invitation.

• Prof. Kihyun Cho in the Department of Energy Engineering at Dankook University, South Korea, visited our group. We are looking forward to collaborating with Prof. Cho. Thank you for your visit!

• We had a monthly research meeting with the Agency for Defense Development (ADD) in South Korea.

• Our group delivered three poster presentations "Prediction of Interfacial Stability of Molten Salt Electrolytes in Thermal Batteries", "Computational Study of the Interface between Li7La3Zr2O12 Electrolyte and FeS2 Cathodes in Thermal Batteries", and "Interface Stability of Lithium Silicon Anodes and Molten Salt Electrolytes in Thermal Batteries" at the 32nd Korean Conference on Semiconductors in South Korea. Thank you for your effort, Myeongjae, Junghun, and Juhyeon.

• Congratulations! Myeongjae and Juyoung presented their research projects at Gachon University. Juyoung earned first place for the presentation, and Myeongjae got third place. Please keep up the great work!

January 2025

• Congratulations! Our research proposal has been accepted for supercomputing resources through the KISTI R&D Innovation-Support Program, which focuses on high-performance computing (HPC). We will be studying high-performance thermal batteries based on solid-state electrolytes.

December 2024

• We held our annual research meeting with the Agency for Defense Development (ADD) in South Korea.

• Dr. Jeongan Choi from the Korea Institute of Machinery and Materials (KIMM), South Korea, visited our group for a research meeting. We are looking forward to collaborating with KIMM. Thank you for your visit!

• We had a group outing this Fall semester. Thank you for your contributions.

• Heonjae visited the Department of Mechanical Systems Engineering at Sookmyung Women's University in South Korea and participated in a research meeting. Thanks to Prof. Gwon Deok Han for his kind invitation and look forward to future collaborations with his group.

November 2024

• Heonjae was honored to be invited to deliver a seminar at the Semiconductor Manufacturing Research Center of the Korea Institute of Machinery and Materials (KIMM) in South Korea. Thanks to Dr. Jeongan Choi for the kind invitation. We look forward to future collaborations with KIMM.

• Congratulations! Our study, in collaboration with Argonne and others in the USA, "Kinetic Control over Disproportionation Stabilizes Wurster’s Blue Catholyte for Nonaqueous Redox Flow Batteries", has been published in ACS Energy Letters. You can find it at the following DOI link: https://doi.org/10.1021/acsenergylett.4c02449

• We invited Prof. Mingi Choi (SeoulTech, South Korea), Prof. Kiho Bae (KenTech, South Korea), and their research teams to a research meeting at Gachon University (South Korea). We look forward to seeing the interesting results of NH₃ cracking for fuel cells in the near future.

• Congratulations! Our study "Computational Prediction of Solvation Structure in Calcium Battery Electrolytes” has been published in Journal of Materials Chemistry A. You can find it at the following DOI link: https://doi.org/10.1039/D4TA06675H,

October 2024

• We had a monthly research meeting with the Agency for Defense Development (ADD) in South Korea.

• Heonjae was invited to give a talk at the 2024 Korean Ceramic Society (KCERS) Fall Meeting in South Korea. The title of the oral presentation is "Prediction of the Ammonia Cracking Mechanism for Application in Nickel Electrode-Based Solid Oxide Fuel Cells." This is an ongoing study with my group members, Seonwoo and Juyoung. We look forward to developing a more comprehensive story in the near future. I would like to thank Seonwoo and Juyoung for their contributions.

• Our group delivered an oral presentation titled "Intercalation Mechanism of Solvated Magnesium Electrolytes on Spinel Cathode Surfaces" and presented a poster on "FeF3 Cathode Interfacial Reactions in Thermal Batteries" at the 2024 ECS Pacific Rim Meeting in the United States. Thank you, Myeongjae and Junghun.

• Congratulations! Our study, in collaboration with Argonne and others in the USA, "Polysulfide-Incompatible Additive Suppresses Spatial Reaction Heterogeneity of Li-S Batteries," has been published in Joule. You can find it at the following DOI link: https://doi.org/10.1016/j.joule.2024.09.004

September 2024

• Congratulations! Our study, in collaboration with University of Illinois at Urbana-Champaign (UIUC, USA) "Influence of Interstitial Cluster Families on Post-Synthesis Defect Manipulation and Purification of Oxides using Submerged Surfaces” has been published and chosen as a Featured Article in Journal of Chemical Physics. You can find it at the following DOI link: https://doi.org/10.1063/5.0230224

• Heonjae visited the Department of Mechanical Engineering at SeoulTech for a research meeting with Prof. Mingi Choi (SeoulTech, South Korea) and Prof. Kiho Bae (Kentech, South Korea). Thanks to Prof. Choi for the invitation.

• Prof. Junmo Koo in the Department of Mechanical Engineering at National Korea Maritime & Ocean University (KMOU), South Korea, visited our group. We are looking forward to collaborating with Prof. Koo. Thank you for your visit!

• Welcome! Sungjin joined our group.

• Dr. Jeongan Choi from the Korea Institute of Machinery and Materials (KIMM), South Korea, visited our group for a research meeting. We are looking forward to collaborating with KIMM. Thank you for your visit!

• Congratulations! Our research proposal has been accepted for supercomputing resources through the KISTI R&D Innovation-Support Program, which focuses on high-performance computing (HPC). We will be conducting research on the development of high-performance sodium-silicon secondary batteries using first-principles calculations and machine learning tools, such as graph neural networks (GNN) and machine learning force fields (MLFF).

• Congratulations! Our group joined Semiconductor Specialized University Support Program at Gachon University in South Korea.

August 2024

• Heonjae was invited to the 2024 International Academic-Industry Collaboration and Future Development Lecture in the Thermal Engineering Division of the Korean Society of Mechanical Engineers (KSME) in Busan, South Korea. Thank you for the invitation.

• Heonjae visited and had a research meeting with Prof. Hanna Cho in the Department of Mechanical and Aerospace Engineering at Ohio State University (OSU), United States. We are initiating a collaboration with Prof. Cho's research group. Thank you for the invitation, Prof. Cho.

• Heonjae visited and had a research meeting with Prof. Jung Hyun Kim in the Department of Mechanical and Aerospace Engineering at Ohio State University (OSU), United States. We are initiating a collaboration with Prof. Kim's research group. Thank you for the invitation, Prof. Kim.

• Heonjae visited and had a research meeting with Dr. Christopher S. Johnson at Argonne National Laboratory (ANL) in the United States. Thank you for the invitation, Dr. Johnson.

• We are initiating a collaboration with Prof. Yingwen Cheng at the Department of Chemistry, University of Tennessee, Knoxville (UTK) in the United States. Thank you Prof. Cheng.

July 2024

• We had a monthly research meeting with the Agency for Defense Development (ADD) in South Korea.

• We are initiating a collaboration with Prof. Hong-Joon Yoon and his research team at the Department of Electronic Engineering, Gachon University in South Korea. Our joint focus will be on employing computational methods to explore interfacial charge transfer in electrostatic applications. Thank you Prof. Yoon.

• We were invited to the Department of Mechanical and System Design Engineering at Hongik University in Seoul, South Korea. We are beginning a research collaboration with Prof. Jiho Kim and his research team. Thank you Prof. Kim.

June 2024

• Prof. Mingi Choi (SeoulTech, South Korea) and Hyunho Lee (a graduate student supervised by Prof. Choi) visited our group for a research meeting. Thank you for your visit!

May 2024

• Congratulations! Our study on "multifaceted effects of ring fusion on the stability of charged dialkoxyarene redoxmers" has been published in Journal of Power Sources. This study was conducted in collaboration with Argonne and other institutions in the USA. You can find it at the following DOI link: https://doi.org/10.1016/j.jpowsour.2024.234689

• Congratulations! Our study on "design principles and routes for calcium alkoxyaluminate electrolytes" has been published in Journal of Physical Chemistry Letters. This study was conducted in collaboration with Argonne and other institutions in the USA. You can find it at the following DOI link: https://doi.org/10.1021/acs.jpclett.4c00969

• Heonjae delivered a seminar talk at the Department of Chemistry in Gachon University, South Korea. Thank you Prof. Wan Pyo Hong and Prof. Sanghoon Lee.

April 2024

• Dr. Jeongan Choi (Korea Institute of Machinery and Materials, South Korea) visited our group. Thank you for your visit!

• We had a group outing this Spring semester. Thank you for your contributions.

• Congratulations! The Agency for Defense Development (ADD) in South Korea has accepted our research proposal. Our investigation will focus on screening thermal battery materials and studying the interfacial reaction mechanism through the use of high-performance computing (HPC).

• We are starting a collaboration with Prof. Kiho Bae (Korea Institute of Energy Technology, Kentech), and Prof. Mingi Choi (Seoul National University of Science and Technology, Seoultech) in South Korea. Together, we are interested in studying the interfacial reaction mechanism for solid oxide fuel cells with ammonia fuels. We look forward to seeing the interesting results in the near future.

March 2024

• Welcome! Joohyeon joined our group.

• Congratulations! Our study on "intercalation mechanism of solvated magnesium electrolytes on spinel cathode" has been published in Journal of Power Sources. You can find it at the following DOI link: https://doi.org/10.1016/j.jpowsour.2024.234227.

February 2024

• Congratulations! Our study on "fast-charging LTO anode driven by light" has been published in Journal of The Electrochemical Society. This study was conducted in collaboration with Argonne and other institutions in the USA. You can find it at the following DOI link: https://doi.org/10.1149/1945-7111/ad2592.

• Welcome! Jihoon joined our group.

• We are starting a collaboration with Dr. Venkateshkumar Prabhakaran and his research team at Pacific Northwest National Laboratory (PNNL) in the United States. Together, we will dive into the world of ion separation methods, specifically focusing on recycling battery materials. Thank you Dr. Venkateshkumar Prabhakaran.

January 2024

• Dr. Gwon Deok Han (Stanford University, USA) visited our group. Thank you for your visit!

• We were invited to the Gachon Secondary Battery Seminar, where we had the opportunity to meet many talented researchers. We would like to warmly thank Prof. Yong Nam Ahn for this invitation.

• Dr. Jaewook Lee (Korea Institute of Civil Engineering and Building Technology, South Korea) visited our group. Thank you for your visit!

• We are initiating a collaboration with Prof. Sungbo Cho and his research team at GU in South Korea. Our joint focus will be on employing computational methods to explore interfacial electrochemical reactions, with specific applications in supercapacitors and bio-sensors. Thank you Prof. Sungbo Cho.

• Heonjae has started his role as a Guest Associate Editor for Frontiers in Chemistry (https://www.frontiersin.org/journals/chemistry). Heonjae would like to express his gratitude to Dr. Venkateshkumar Prabhakaran from Pacific Northwest National Laboratory (PNNL, USA) for recommending this opportunity.

• Congratulations! Our study on "heterogenous solid electrolyte interphase in graphite anode" has been published in Proceedings of the National Academy of Sciences (PNAS). This study was conducted in collaboration with Argonne and other institutions in the USA. You can find it at the following DOI link: https://doi.org/10.1073/pnas.2313096121.

• Welcome! Juyoung joined our group.

December 2023

• Heonjae was invited to a ceramic engineer gathering and met many talented researchers in Daejeon, South Korea. Thank you for the invitation.

• We had a group outing at the end of this Fall semester. Thank you for your contributions.

• Congratulations! Our research proposal has been accepted for supercomputing resources through the KISTI R&D Innovation-Support Program, which focuses on high-performance computing (HPC). We will be studying fluorine ion battery materials and reaction mechanisms under extreme environmental conditions.

• Welcome! Taewook joined our group.

November 2023

• Heonjae was invited to deliver a seminar talk at the Nano-Convergence Manufacturing Systems Research Division of the Korea Institute of Machinery & Materials (KIMM) in South Korea. We look forward to research collaboration in the future. Thank you Dr. Hyungjun Lim.

• Heonjae delivered a research seminar talk at the Energy Storage Research Center of the Korea Institute of Science and Technology (KIST) in South Korea. We look forward to research collaboration in the future. Thank you Dr. Seungho Yu and Dr. Kyung Yoon Chung.

• Heonjae presented a seminar on research at the Agency for Defense Development (ADD) in South Korea. We look forward to research collaboration in the future. Thank you Dr. Junmo Koo.

• Congratulations! Our study on "Li metal batteries" has been published in Small. This study was conducted in collaboration with Argonne and other institutions in the USA. You can find it at the following DOI link: https://doi.org/10.1002/smll.202306868

• Heonjae gave a research presentation at the Advanced Batteries Research Center of the Korea Electronics Technology Institute (KETI) in South Korea. We look forward to research collaboration in the future. Thank you Dr. Hyun-seung Kim and Dr. Ji-Sang Yu. 

• Welcome! Seonwoo joined our group.

October 2023

• Congratulations! Our study on "multivalent ion batteries" has been published in ACS Applied Materials & Interfaces. This study was conducted in collaboration with Argonne and other institutions in the USA. You can find it at the following DOI link: https://doi.org/10.1021/acsami.3c07875.

• Heonjae delivered a seminar presentation at the School of Mechanical Engineering, Korea University in South Korea. We look forward to research collaboration in the future. Thank you Prof. Joon Hyung Shim.

• We are starting a collaboration with Dr. Christopher S. Johnson and his research team at Argonne National Laboratory (ANL) in the United States, focusing on our computational efforts to investigate interfacial electrochemical reactions on lithium (Li) and sodium (Na) ion batteries. Thank you Dr. Christopher S. Johnson.

• Dr. Jin Yu (KLA, USA), Dr. Keunsoo Kim (Argonne National Laboratory, USA), and Dr. Jieun Lee (Argonne National Laboratory, USA) visited our group. Thank you for your visit!

• Dr. Jeongan Choi (Korea Institute of Machinery and Materials, South Korea) visited our group. Thank you for your visit!

September 2023

• Jeong Research Group (JRG) has initiated its operations at Gachon University in South Korea.

• Heonjae gave a seminar talk in the Department of Electronic Engineering at Gachon University. Thank you Prof. Sang Yeol Lee.

• Welcome! Myeongjae and Junghun joined our group.

• Dr. Junmo Koo (Agency for Defense Development, South Korea) visited our group. Thank you for your visit!