Materials Design and Reaction Mechanisms
Jeong Research Group, Department of Electronic Engineering
Gachon University, South Korea
About
Our group's research goal is to create a sustainable energy future through insights gained from scientific discovery and process engineering. Our approach involves combining computational modeling and experiments to gain insights into fundamental problems at the intersection of materials, processes, and products. On the application side, our interests specialize in the interfacial design of electrolytes and electrodes for next-generation batteries and defect engineering for semiconductor applications.
Research
Materials Design in Batteries
Next-generation battery electrolyte design
Next-generation battery interface design
Process Development in Semiconductors
Development of wet etching process for oxide semiconductors
Development of semiconductor diffusion process using liquid
Control of diffusion process using UV light and solution pH
Product Development in Fuel Cells
Fuel cell development and performance optimization
Group
Publications
In Progress
Chen Zhao#, Heonjae Jeong#, Inhui Hwang, Tianyi Li, Luxi Li, Wenqian Xu, Zhenzhen Yang, Wenqian Xu, Lei Cheng, Cheng-Jun Sun, Gui-Liang Xu, Khalil Amine, "Enabling stable operation of lean electrolyte Li-S cell by film-forming sparing electrolyte with Lewis acid additive", #equally contributed, under review
Heonjae Jeong, Edmund G. Seebauer, “Influence of Interstitial Cluster Families on Post-Synthesis Defect Engineering and Purification of Oxides using Submerged Surfaces”, under review
Heonjae Jeong, Raylin Chen, Kihyun Cho, Xiao Su, Edmund G. Seebauer, “Defect Manipulation in TiO2 by Aqueous Electrochemistry”, in preparation
Heonjae Jeong, Haimeng Wang, Lei Cheng, “Computational Prediction for Ca Electrolyte Speciation”, in preparation
Jian Zhi Hu#, Wenda Hu#, Heonjae Jeong#, Grant Alexander, Nguyen, Dan Thien, Venkateshkumar Prabhakaran, Kee Sung Han, Ying Chen, Jordi Cabana-Jimenez, Justin Connell, Lei Cheng, Vijayakumar Murugesan, Kevin R. Zavadil, and Karl T. Mueller, "Thermal Decomposition Pathways of Bulk Electrolytes on Vanadium Oxide Nanocrystals", in preparation
Heonjae Jeong, Christopher S. Johnson, "Prediction of Li-Si Anode Reactivity: First-Principles Calculations", in preparation
2024
Zhiguang Li, Heonjae Jeong, Xiaoting Fang, Yuyue Zhao, Jingjing Zang, Ilya A. Shkrob, Xiaoliang Wei, Lei Cheng, Lu Zhang, "Multifaceted Effects of Ring Fusion in Charged Dialkoxyarene Redoxmers", J. Power Sources, 2024, 608, 234689, https://doi.org/10.1016/j.jpowsour.2024.234689.
Noel J. Leon, Stefan Illic, Xiaowei Xie, Heonjae Jeong, Zhenzhen Yang, Bingning Wang, Evan Spotte-Smith, Charlotte Stern, Nathan Hahn, Kevin Zavadil, Lei Cheng, Kristin Persson, Justin Connell, Chen Liao, "Design Principles and Routes for Calcium Alkoxyaluminate Electrolytes", J. Phys. Chem. Lett., 2024, 15, 5096-5102, https://doi.org/10.1021/acs.jpclett.4c00969.
Heonjae Jeong, Lei Cheng, “Intercalation Mechanism of Solvated Magnesium Electrolytes on Spinel Cathode Surfaces”, J. Power Sources 2024, 602, 234227, https://doi.org/10.1016/j.jpowsour.2024.234227.
Yuanyuan Ma, Yaxin Shen, Heonjae Jeong, Jason Lipton, Hang Wang, Stephen A. Maclean, Jason A. Rӧhr, Christopher S. Johnson, André D. Taylor, "Fast-charging Li4Ti5O12 anode driven by light", J. Electrochem. Soc., 2024, 171 (2), 020521, https://doi.org/10.1149/1945-7111/ad2592.
Dawei Xia, Heonjae Jeong, Dewen Hou, Lei Tao, Tianyi Li, Kristin Knight, Anyang Hu, Dennis Nordlund, Sami Sainio, Yuzi Liu, John R. Morris, Wenqian Xu, Haibo Huang, Luxi Li, Hui (Claire) Xiong, Lei Cheng, Feng Lin, "Self-terminating, Heterogeneous Solid-Electrolyte Interphase Enables Reversible Li-Ether Co-Intercalation in Graphite Anodes, PNAS, 2023, 121 (5), e2313096121, https://doi.org/10.1073/pnas.2313096121.
Chuyi Xie#, Chen Zhao#, Heonjae Jeong, Qiang Liu, Tianyi Li, Wenqian Xu, Lei Cheng, Gui-Liang Xu, Khalil Amine, and Guohua Chen, “Regulating Li Nucleation and Growth Heterogeneities viaNear-Surface Lithium-Ion Irrigation for Stable Anode-LessLithium Metal Batteries”, Small, 2024, 20(12), 2306868 https://doi.org/10.1002/smll.202306868, #equally contributed
2023
Heonjae Jeong#, Dan-Thien Nguyen#, Yingjie Yang, D Bruce Buchholz, Guennadi A Evmenenko, Jinghua Guo, Feipeng Yang, Paul C. Redfern, Jian Zhi Hu, Karl T. Mueller, Robert Klie, Vijayakumar Murugesan, Justin Connell, Venkateshkumar Prabhakaran, Lei Cheng, “Reactivity of Mg Electrolyte Species on MgV2O4 Cathode Surface”, ACS Appl. Mater. Interfaces, 2023, 15 (41), 48072–48084, #equally contributed
Jehee Park, Kyojin Ku, Jihyeon Gim, Seoung-bum Son, Heonjae Jeong, Lei Cheng, Hakim Iddir, Dewen Hou, Claire Xiong, Youngsik Kim, Eungje Lee, Christopher Johnson, "Multi-functional Effect of Fe Substitution in Na Layered Cathode Materials for Enhanced StorageStability", ACS Appl. Mater. Interfaces, 2023, 15 (32), 38454–38462
Heonjae Jeong, Edmund G. Seebauer, “Effects of adventitious impurity adsorption on oxygen interstitial injection rates from submerged TiO2(110) and ZnO(0001) surfaces”, J. Vac. Sci. Technol. A, 2023, 41 (3), 033203
Chuyi Xie#, Chen Zhao#, Heonjae Jeong, Tianyi Li, Luxi Li, Wenqian Xu, Zhenzhen Yang, Cong Lin, Qiang Liu, Lei Cheng, XingkangHuang, Gui-Liang Xu, Khalil Amine, Guohua Chen, “Suppressing Universal Cathode Crossover in High-Energy Lithium Metal Battereis via a Versatile Interlayer Design”, Angew. Chem. Int. Ed. 2023, e202217476, 1–8, #equally contributed
Heonjae Jeong, Ethan P. Kamphaus, Paul C. Redfern, Nathan T. Hahn, Noel J. Leon, Chen Liao, Lei Cheng, "Computational Predictions of Stability of Fluorinated Calcium Aluminate and Borate Salts”, ACS Appl. Mater. Interfaces, 2023, 15 (5), 6933–6941
Wenxiang Chen, Xun Zhan, Renliang Yuan, Saran Pidaparthy, Adrian Xiao Bin Yong, Hyosung An, Zhichu Tang, Kaijun Yin, Arghya Patra, Heonjae Jeong, Cheng Zhang, Kim Ta, Zachary W. Riedel, Ryan M. Stephens, Daniel P. Shoemaker, Hong Yang, Andrew A. Gewirth, Paul V. Braun, Elif Ertekin, Jian-Min Zuo, Qian Chen, “Formation and impact of nanoscopic oriented phase domains in electrochemical crystalline electrodes”, Nat. Mater, 2023, 22, 92‒99
2022
Heonjae Jeong, Edmund G. Seebauer, “Effects of Ultraviolet Illumination on Oxygen Interstitial Injection from TiO2 under Liquid Water", J. Phys. Chem. C, 2022, 126 (49), 20800‒20806
Heonjae Jeong, Edmund G. Seebauer, “Strong Isotopic Fractionation of Oxygen in TiO2 by Surface-Enhanced Solid-State Diffusion”, J. Phys. Chem. Lett., 2022, 13 (42), 9841‒9847
Heonjae Jeong, Elif Ertekin, Edmund G. Seebauer, “Surface-Based Post-synthesis Manipulation of Point Defects in Metal Oxides UsingLiquid Water”, ACS Appl. Mater. Interfaces, 2022, 14 (29), 34059‒34068
2021
Heonjae Jeong, Ming Li, Jingtian Kuang, Elif Ertekin, Edmund G. Seebauer, “Mechanism of creation and destruction of oxygen interstitial atoms by nonpolar zinc oxide (101"0) surfaces”, Phys. Chem. Chem. Phys., 2021, 23 (30), 16423‒16435
2020
Heonjae Jeong, Elif Ertekin, Edmund G. Seebauer, “Kinetic Control of Oxygen Interstitial Interaction with TiO2(110) via the SurfaceFermi Energy”, Langmuir, 2020, 36 (42), 12632‒12648
Heonjae Jeong, Edmund G. Seebauer, Elif Ertekin, “Fermi Level Dependence of Gas-Solid Oxygen Defect Exchange Mechanism onTiO2(110) by First-Principles Calculations”, J. Chem. Phys., 2020, 153 (12), 124710
Dong Young Jang, Junmo Koo, Hyeon Rak Choi, Jun Woo Kim, Heon Jae Jeong, Fritz B. Prinz, Joon Hyung Shim, “Coke-Free Oxidation of Methanol in Solid Oxide Fuel Cells with Heterogeneous Nickel-Palladium Catalysts Prepared by Atomic Layer Deposition”, ACS Sustain. Chem. Eng., 2020, 8 (28), 10529‒10535
2018
Heonjae Jeong, Edmund G. Seebauer, Elif Ertekin, “First-Principles Description of Oxygen Self-Diffusion in Rutile TiO2: Assessment of Uncertainties due to Enthalpy and Entropy Contributions,” Phys. Chem. Chem. Phys., 2018, 20 (25), 17448‒17457
2017
Jun Woo Kim, Dong Young Jang, Manjin Kim, Heonjae Jeong, Namkeun Kim, and Joon Hyung Shim “Compositional Optimization of Gadolinia-Doped Ceria Treatment for Enhanced Oxygen Reduction Kinetics in Low Temperature Solid Oxide Fuel Cells” Thin Solid Films, 2017, 624, 95‒100
2016
Heonjae Jeong#, Jun Woo Kim#, Joonsuk Park, Jihwan An, Tonghun Lee, Fritz B. Prinz, Joon Hyung Shim, “Bimetallic Nickel/Ruthenium Catalysts Synthesized by Atomic Layer Deposition for Low-Temperature Direct Methanol Solid Oxide Fuel Cells,” ACS Appl. Mater. Interfaces, 2016, 8 (44), 30090‒30098, #equally contributed
2015
You Kai Li#, Hyung Jong Choi#, Ho Keun Kim, Ke Chean Neoh, Manjin Kim, Junmo Koo, Heon Jae Jeong, Dong Young Jang, Joon Hyung Shim, “Nanoporous Silver Cathodes Surface-Treated by Atomic Layer Deposition of Y:ZrO2 for High-Performance Low-Temperature Solid Oxide Fuel Cells,” J. Power Sources, 2015, 295, 175‒181, #equally contributed
Heon Jae Jeong, Jun Woo Kim, Dong Young Jang, Joon Hyung Shim, “Atomic Layer Deposition of Ruthenium Surface-Coating on Porous Platinum Catalysts for High-Performance Direct Ethanol Solid Oxide Fuel Cells,” J. Power Sources, 2015, 291, 239‒245
Heon Jae Jeong, Jun Woo Kim, Kiho Bae, Hojean Jung, Joon Hyung Shim, “Platinum-Ruthenium Heterogene- ous Catalytic Anodes Prepared by Atomic Layer Deposition for Use in Direct Methanol Solid Oxide Fuel Cells,” ACS Catal., 2015, 5 (3), 1914‒1921
Contact
Address: College of Semiconductor 6-18, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, South Korea
Email: hjeong@gachon.ac.kr
Phone: +82-31-750-5316
Office hours: Monday - Friday (9:00 am - 5:00 pm)
How to contact Heonjae
Email is the best way. I will do my best to respond to you within a reasonable time frame.
To future colleagues
We warmly welcome your interest and look forward to potentially meeting you soon. Our research themes align well with diverse academic backgrounds, including electronic engineering, chemical engineering, materials science and engineering, mechanical engineering, physics, and chemistry. If you have a clear vision and a passion for active research in energy storage/conversion and semiconductor systems, please feel free to reach out to Heonjae.
Group openings (Spring 2024)
Our lab is open to both Gachon-affiliated and external students, with diverse cultural and personal backgrounds. We are interested in offering a particular invitation extended to enthusiastic undergraduates. For graduate students, we offer research assistantships (tuition fee waiver along with stipend). The availability of postdoctoral positions is subject to our current grant status, and we encourage interested candidates to contact Heonjae for more information. If you are interested in joining us, please email your CV with your research interest.