Dr. Hyunseung Kim

Hi! I am a Post-doctor in Research Institute of Advanced Materials, Seoul National University, working under the supervision of Professor WooChul Jung. My research area is on understanding the reactions that occur at the interface of ionic solids (specifically oxides) and gases. The goal is to improve reaction kinetics for applications in chemical and electrochemical catalysis, such as fuel cells and electrolyzers. 

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ORCID: 0000-0002-1412-2979

Professional Experience

• Post-doctor (Senior Researcher), Research Institute of Advanced Materials, Seoul National University (25.04.01. - present)

• Post-doctor, Applied Science Research Institute, KAIST (24.03.01. - 25.03.31.)

• Visiting scholar at Massachusetts Institute of Technology (Prof. Harry L. Tuller) (23.01.03. - 04.30.)

Education

• Ph.D. Department of Materials Science and Engineering, KAIST (20.03. - 24.02.)

Thesis title: "Study on atomic-scale observation and control of surface cation segregation of perovskite oxides for energy conversion devices"

Supervisor: Prof. WooChul Jung

• M.S. Department of Materials Science and Engineering, KAIST (18.03. - 20.02.)

Thesis title: "Electrochemical deposition of doped ceria for the performance improvement of thin-film solid oxide fuel cells"

Supervisor: Prof. WooChul Jung

• B.S. Department of Materials Science and Engineering, KAIST (14.03. - 18.02.) (magna cum laude)

Supervisor: Prof. WooChul Jung

• Korea Science Academy of KAIST (11.02. - 14.02.)

Research Interests

• Gas/solid interface, perovskite oxides, surface cation segregation, exsolution, thin-film fabrication, pulsed laser deposition, solid oxide fuel cells

Publications

citations: 1084, h-index: 13 (25.08.05.)

(submitted & in preparation)

• H. Kim et al., An ideal surface reveals how active it is and why it degrades: atomically-flat Sr(Ti,Fe)O3-δ model thin film system - a case study (under review)

• Y. Wang, J. Liu, Y. Song, X. Tang, F. Matteucci, M. Santarelli, F. Smeacetto, Z. Lyu, H. Kim, J. Li, W. Jung, M. Han, Z. Shao, and F. Ciucci*, Empowering Clean Energy for the Future through Solid Oxide Fuel Cell Technology (under review)

• Y. Hong+, H. Kim+, Y. B. Kim, S. Jeon, S. Kim, J. Lee, H. Sun, S. Nam, and W. Jung*, Alkaline leaching: a facile strategy to improve the surface activity of air electrodes for solid oxide electrochemical cells (in revision)

• H. Kim et al., "Boosting the activity and stability of solid oxide fuel cell air electrode via topotactic fluorination" (in preparation)

• H. Kim+, Y. Hong+, S. Kim+ et al., "Controlling ex-solution behavior of Sr-deficient Sr(Ti,Fe,Ni)O3-δ via impregnation of anion dopants" (in preparation)

• H. Kim et al., "Liquid-based ambient-condition surface modification technique for enhanced solid oxide fuel cell air electrodes" (in preparation)

• H. Kim et al., "Excimer laser-driven ultrafast exsolution for enhancing solid oxide fuel cell air electrodes" (in preparation)

• H. Kim et al., "F-induced crystal structure control" (in preparation)

(as a first author)

1. D. Lee+, H. Kim+, S. J. Jeong+, H. Yu+, I. Jeong*, W. Jung*, and K. T. Lee*, Anion Sublattice Engineering via F-doping to Enhance δ-Bi2O3 Stability for Low-Temperature Solid Oxide Electrochemical Cells, Small (IF = 12.1) (accepted) [link] [pdf] This article also appears in Hot Topic: Fluorine Chemistry

2. H. Kim+, H. G. Seo+, S. Ahn, H. L. Tuller*, and W. Jung*, Unveiling Critical Role of Metal Oxide Infiltration in Controlling the Surface Oxygen Exchange Activity of SrTi1-xFexO3-δ Perovskite Oxides, Journal of Materials Chemistry A (IF = 9.5) 13(14), 9708-9714 (25.04.14.) [link] [pdf] From the themed collection: Journal of Materials Chemistry A HOT Papers, Back cover

3. J. Kim+, H. Kim+, S. Nam, Y. Choi*, and W. Jung*, Exploring gas/solid interface reactions of solid oxide fuel cell electrodes via model thin film systems, EcoMat (IF=12.6) 7(4), e70007 (25.04.01.) [link] [pdf]

4. S. Nam+, J. Kim+, H. Kim+, and W. Jung*, Surface functionalizing for high-temperature ceramic fuel cells using electrochemical deposition technique, InfoScience 2(1), e12026 (24.04.24.) [link] [pdf]

5. H. Sun+, H. Kim+, X. Xu, L. Fei, W. Jung*, and Z. Shao*, Thin Films Fabricated by Pulsed Laser Deposition for Electrocatalysis, Renewables 1(1), 21-38 (23.02.08.) [link] [pdf]

6. J. Liu+, J. K. Kim+, Y. Wang+, H. Kim+, A. Belotti, B. Koo, Z. Wang, W. Jung* and F. Ciucci*, Understanding and mitigating A-site surface enrichment in Ba-containing perovskites: A combined computational and experimental study of BaFeO3, Energy & Environmental Science (IF = 30.8) 15(10), 4069–4082 (22.10.01.) [link] [pdf] Front cover

7. J. Kim+, H. Kim+, S. Nam+, and W. Jung*, 전기화학 증착 기술과 고체산화물연료전지에의 응용, Ceramist 24(4), 411-423 (21.12.31.) [link] [pdf]

8. H. Kim, H. G. Seo, Y. Choi, D.-K. Lim and W. Jung*, Cathodic electrochemical deposition: A new strategy to enhance the activity and stability of silver cathodes for thin-film solid oxide fuel cells, Journal of Materials Chemistry A (IF = 9.5) 8(29), 14491–14497 (20.08.07.) [link] [pdf] Inside back cover

(as a co-author)

1. N. Tsvetkov+, H. G. Seo+, J. Seo, B. Koo, H. Kim, K-.H. Kim, S. Ahn, J. K. Kang*, and W. Jung*, Suppressing grain growth and thermo-chemical decomposition of perovskite oxide nanoparticles via B-site cation surface stabilization, Chemical Engineering Journal (IF=13.2) [link]

2. H. Sun*, Z. Wei, Z. Wei, H. Kim, Y. Zhang, J. Zhang, M. Liang, and W. Jung*, Unlocking the Potential of Strontium Iridate for Oxygen Evolution Reaction: From Fundamental Insights to Advanced Electrocatalyst Design, Journal of Materials Chemistry A (IF = 9.5) [link]

3. J. Lee+, S. Nam+, H. Kim, P. Lee, S. Yoon, Y.-J. Park*, and W. Jung*, Accelerated Degradation of Pt-coated Ti Porous Transport Layers Under Dynamic Potential Pulses in PEMWEs, Journal of Materials Chemistry A (IF = 9.5) 13(18), 13495-13502 (25.05.14.) [link]

4. J. K. Kim+, S. Kim+, Y. B. Kim+, B. Koo, D. Oh, H. Kim, K. Kim*, J. W. Han*, and W. Jung*, Designing Supported Nanoparticles via Synergetic Ex-Solution and Phosphorization for Tailored Active Site Generation, Advanced Materials (IF = 26.8) 37(26), 2417576 (25.07.03.) [link]

5. S. Kim+, J. Lee+, Y. B. Kim, D. Oh, J. K. Kim, B. Koo, H. Kim, G. H. Jung, M. Kim, G. Doo, J. Seo, T. J. Lim, K. Kim*, J. W. Han*, and W. Jung*, Enhanced Alkaline Water Electrolysis by Rational Decoration of RuOx with In Situ Grown CoFe Nanolayer, ACS Nano (IF = 16.0) 19(10), 10026-10037 (25.03.18.) [link]

6. H. G. Seo*, H. Kim, W. Jung, and H. L. Tuller*, Reversal of chronic surface degradation of Sr(Ti,Fe)O3 perovskite-based fuel cell cathodes by surface acid/base engineering, Applied Catalysis B-Environment and Energy (IF = 21.1) 355(15), 124172 (24.10.15.) [link]

7. H. Sun+, L. Li+, Y. Chen+, Y. B. Kim, H. Kim, L. Fei, Z. Shao*, and W. Jung*, Crystal Structure Optimization of Copper Oxides for Benzyl Alcohol Oxidation Reaction, Chemical Communications (IF = 4.2) 60(56), 7224-7227 (24.07.18.) [link]

8. S. Nam+, J. Kim+, H. Kim, S. Ahn, S. Jeon, Y. Choi*, B.-K Park*, and W. Jung*, Revitalizing Oxygen Reduction Reactivity of Composite Oxide Electrodes via Electrochemically Deposited PrOx Nanocatalysts, Advanced Materials (IF = 26.8) 36(25), 2307286 (24.06.20.) [link]

9. H. Sun+, X. Xu+, H. Kim, Z. Shao*, and W. Jung*, Advanced electrocatalysts with unusual active sites for electrochemical water splitting, InfoMat (IF = 22.3) 6(1), e12494 (24.01.31.) [link]

10. H. Sun, X. Xu, H. Kim, W. Jung, W. Zhou* and Z. Shao*, Electrochemical Water Splitting: Bridging the Gaps Between Fundamental Research and Industrial Applications, Energy & Environmental Materials (IF = 14.1) 6(5), e12441 (23.09.22.) [link]

11. H. Sun+, L. Li+, Y. Chen+, H. Kim, X. Xu, D. Guan, Z. Hu, L. Zhang*, Z. Shao*, and W. Jung*, Boosting ethanol oxidation by NiOOH-CuO nano-heterostructure for energy-saving hydrogen production and biomass upgrading, Applied Catalysis B-Environment (IF = 21.1) 325(15), 122388 (23.05.15.) [link]

12. H. Sun, J. Liu, H. Kim, S. Song, L. Fei, Z. Hu, H. Lin, C. Chen, F. Ciucci* and W. Jung*, Ni-Doped CuO Nanoarrays Activate Urea Adsorption and Stabilizes Reaction Intermediates to Achieve High-Performance Urea Oxidation Catalysts, Advanced Science (IF = 14.1) 9(34), 2204800 (22.12.08.) [link]

13. H. Sun, H. Kim, S. Song and W. Jung*, Copper foam-derived electrodes as efficient electrocatalysts for conventional and hybrid water electrolysis, Materials Reports: Energy 2(2), 100092. (22.06.13.) [link]

14. J. H. Kim, K. Jang, D.-K. Lim, S. Ahn, D. Oh, H. Kim, J. Seo, P.-P. Choi and W. Jung*, Self-Assembled Nano-Composite Perovskites as Highly Efficient and Robust Hybrid Cathode for Solid Oxide Fuel Cell, Journal of Materials Chemistry A (IF = 9.5) 10(5), 2496–2508 (22.02.07.) [link]

15. H. Sun, J. Liu, G. Chen, H. Kim, S. Kim, Z. Hu, J. Chen, S. Haw, F. Ciucci* and W. Jung*, Hierarchical Structure of CuO Nanowires Decorated with Ni(OH)2 Supported on Cu Foam for Hydrogen Production via Urea Electrocatalysis, Small Methods (IF = 9.1) 6(1), 2101017 (22.01.20) [link]

16. D.-K. Lim+, N. W. Kwak+, J.-S. Kim, H. Kim, B.-K. Kim, Y.-C. Kim* and W. Jung*, Ni diffusion in ceria lattice: A combined experimental and theoretical study, Acta Materialia (IF = 9.3) 219(15), 117252 (21.10.15.) [link]

17. N. Kim, M. Shin, S. Jun, B. Choi, J. Kim, J. Park, H. Kim, W. Jung, J.-Y. Lee, Y.-H. Cho and B. Shin*, Highly Efficient Vacuum-Evaporated CsPbBr3 Perovskite Light-Emitting Diodes with an Electrical Conductivity Enhanced Polymer-Assisted Passivation Layer, ACS Applied Materials & Interfaces (IF = 8.2) 13(31), 37323–37330 (21.08.11.) [link]

18. H. G. Seo+, S. Ji+, J. Seo, S. Kim, B. Koo, Y. Choi, H. Kim, J. H. Kim, T.-S. Kim and W. Jung*, Sintering-resistant platinum electrode achieved through atomic layer deposition for thin-film solid oxide fuel cells, Journal of Alloys and Compounds (IF = 6.3) 835(15), 155347. (20.09.15.) [link]

Patent

• 정우철, 김현승, 남성우, 연료전지용 산화물 공기극 재료의 비금속이온 도핑방법 및 이를 포함하는 고체산화물 연료전지, 10-2024-0090562, 24.07.09.

Awards

• Yang-Song Researcher Award, Excellence Prize, The Korean Ceramic Society (24.04.17.) [link]

• BK21 FOUR Excellent Research Gold Prize, KAIST (24.01.16.) [link]

• Outstanding Academic Presentation Award at Next-Generation SOFC Research Leader Symposium, The Korean Ceramic Society (23.10.18-20.) [link]

• Nano Research Campus Best Presentation Award, at Nano Research Campus KAIST (23.09.08.) [link]

• KCerS Best Poster Award, The Korean Ceramic Society (21.11.03-05.) [link]

• Community Service Scholarship, KAIST (21.08.27.) [link]

• Samsung Electro-mechanics Ceramist Award, The Korean Ceramic Society (21.06.16-18.) [link]

• Yang-Song Poster Award, Yang-Song Ceramography Award, The Korean Ceramic Society (20.11.23-25.) [link]

• Oral Presentation Excellence Award, The 20th Japan-Korea Students’ Symposium (19.11.05-09.) [link]

• Best Oral Presentation Award, The 19th Korea-Japan Students’ Symposium (18.11.05-08.) [link]

Participation in International Events

• Oral presentation at PRiME 2024 (The Electrochemical Society, 24.10.10.)
  Unveiling the Significant Influence of Metal Oxide Infiltration on Surface Oxygen Exchange Activity in Perovskite Oxides

• Oral presentation at Nano Research Campus KAIST (23.09.08.)
  Understanding surface Sr segregation of perovskite oxides through microscopic observations

• Poster presentation at The 21st Japan-Korea Students' Symposium (22.11.17.)
  Preparation of an ideal surface reveals how active it is and why it degrades - SrTi0.5Fe0.5O3-δ as a case study

• Oral presentation at The 23rd International Conference on Solid State Ionics (22.07.17.)
  Quantitative correlation of surface cation segregation and surface activity of Sr(Ti,Fe)O3-δ through microscopic observation

• Poster presentation at The 2022 Nano Korea Symposium (22.07.06.)
  Topotactic fluorination boosts the surface activity and stability of solid oxide fuel cell air electrodes

• Poster presentation at 2020 Asian SOFC Symposium (21.11.07.)
  Correlating Microscopic Observation and Characterization on Surface Sr Segregation of Sr(Ti,Fe)O3-δ Thin-films

• Poster presentation at The 8th International Congress on Ceramics (ICC8) (21.04.25.)
  Correlation of surface cation segregation and activity of atomically-flat Sr(Ti,Fe)O3-δ thin-film for solid oxide fuel cell electrodes

• Oral presentation at The 20th Japan-Korea Students’ Symposium (19.11.07.)
  Cathodic Electrochemical Deposition: A New Strategy to Dramatically Enhance the Activity and Stability of Silver Cathodes for Solid Oxide Fuel Cells

• Poster presentation at The 22nd International Conference on Solid State Ionics (19.06.16.)
  Highly Active and Robust Silver Cathodes Treated by Electrochemically-Driven (Pr, Ce)O2-δ Overcoating for Thin-Film Solid Oxide Fuel Cells

• Poster presentation at The 2019 Nano Korea Symposium (19.07.02.)
  Highly Active and Robust Silver Cathodes Treated by Electrochemically-Driven (Pr, Ce)O2-δ Overcoating for Thin-Film Solid Oxide Fuel Cells

• Oral presentation at The 19th Korea-Japan Students’ Symposium (18.11.06.)
  Two-step (Pr,Ce)O2-δ coating on nanoporous platinum cathode with improved performance and stability for low-temperature solid oxide fuel cells

Participation in Domestic Events

• Poster presentation at The 2025 Spring Meeting of The Korean Ceramic Society (25.04.16.)
  Boosting the activity and stability of solid oxide fuel cell air electrode via topotactic fluorination

• Oral presentation at The 2024 Spring Meeting of The Korean Ceramic Society (24.04.17.)
  Revealing the Critical Role of Metal Oxide Infiltrate in Regulating Surface Oxygen Exchange Activity of Perovskite Oxides

• Oral presentation at The 2023 Fall Meeting of The Korean Ceramic Society (23.10.18.)
  (De-)activation of surface oxygen exchange activity of perovskite oxides by metal oxide infiltration: Sr(Ti,Fe)O3-δ as case-study

• Poster presentation at The 2nd Korean SOC Symposium for Carbon Neutrality Initiatives (23.07.11.)
  Unraveling the Quantitative Correlation between Surface Cation Segregation and Surface Activity in Sr(Ti,Fe)O3-δ through Microscopic Observation

• Oral presentation at 수소에너지 연구 협력 하계 워크샵 (22.07.01-02.)
  Strategies to investigate and improve perovskite oxide surfaces

• Oral presentation at The 2022 Spring Meeting of The Korean Ceramic Society (22.04.13.)
  Microscopic investigation of surface Sr segregation of Sr(Ti,Fe)O3-δ thin-films

• Poster presentation at The 2021 Fall Meeting of The Korean Ceramic Society (21.11.03.)
  Topotactic chlorination as a new strategy to enhance the surface activity of solid oxide fuel cell air electrodes

• Poster presentation at The 2021 Spring Meeting of The Korean Ceramic Society (21.06.16.)
  Microscopic observation and characterization on surface cation segregation of Sr(Ti,Fe)O3-δ

• Poster presentation at The 2020 Fall Meeting of The Korean Ceramic Society (20.11.23.)
  Cathodic electrochemical deposition of doped-ceria as a strategy to enhance the activity and stability of silver cathodes for thin-film solid oxide fuel cells

• Oral presentation at The 2020 Spring Meeting of The Korean Ceramic Society (20.07.06.)
  Cathodic electrochemical deposition of (Pr,Ce)O2-δ to enhance the activity and stability of silver cathodes for thin-film solid oxide fuel cells

• Poster presentation at The 2019 Fall Meeting of The Korean Ceramic Society (19.11.14.)
  A simple electrochemically-driven (Pr, Ce)O2-δ overcoating to enhance the activity and thermostability of silver cathodes for thin-film solid oxide fuel cells

• Poster presentation at The 2019 Spring Meeting of The Korean Ceramic Society (19.04.10.)
  Highly Active and Robust Silver Cathodes Treated by Electrochemically-Driven (Pr, Ce)O2-δ Overcoating for Thin-Film Solid Oxide Fuel Cells

Extracurricular Activities

• Organizing committee member (Head of 'Media & Design' section) of ICISTS-KAIST (International Conference for the Integration of Science, Technology, and Society) (14.03.-15.08.)

• Member of KAIST Orchestra (14.03. - 25.03.)

• Media director and photojournalist of KAIST TIMES (15.09. - 18.02.)

• Student council member of Department of Materials Science & Engineering, KAIST (general affairs director and department representative) (15.03. - 17.02.)

• Student Mentor at Department of Materials Science & Engineering, KAIST (15.03. - 16.02.)