Korea Advanced Institute of Science and Technology · Energy
Professor Soo-Kil Kim's research lab specializes in the development of advanced electrocatalysts for clean energy applications, particularly focusing on proton exchange membrane water electrolysis (PEMWE). The lab explores nanostructured, non-precious, and low-platinum catalysts with tailored compositions and morphologies to enhance catalytic activity, stability, and mass activity for the hydrogen evolution reaction (HER). Key research directions include electrodeposition-based synthesis of hierarchical and self-supporting catalysts, structural reconstruction for improved performance, and the mechanistic understanding of additives in electrodeposition processes such as superfilling and surface adsorption effects. The lab emphasizes practical scalability and minimal precious metal usage to enable cost-effective green hydrogen production.
Figures are computed from collected data and may differ slightly.
A highly active and stable 3D dandelion spore-structured self-supporting Ir-based electrocatalyst for proton exchange membrane water electrolysis fabricated using structural reconstruction.
The catalytic activity of amorphous Co–P–B catalysts electrodeposited on carbon paper (CP) for the hydrogen evolution reaction (HER) was investigated in aqueous 0.5 M H<sub>2</sub>SO<sub>4</sub> electrolyte.
Interesting phenomena were observed during an investigation on the accelerating effects of 3-mercapto-1-propane sulfonic acid \n~MPSA!, i.e., different aging times of MPSA result in different filling profiles. When MPSA was added to the electrolyte \nimmediately before electrodeposition, subconformal deposits appeared, whereas MPSA aged over 12 h enabled superfilling. From \nUV-visible analysis, over 99% MPSA was converted to bis~3-sulfopropyl!disulfide ~SPS! within 12 h through the
Direct self-terminated Pt electrodeposition on carbon paper enables precise control of loading Pt mass, from the sub-microgram to the sub-milligram scale. This can provide insight into the low limits of Pt use for reasonable performance of a proton exchange membrane water electrolyzer.
A hierarchical NixW100–x/Cu nanowire (NW) catalyst for the acidic hydrogen evolution reaction was electrochemically fabricated on carbon paper (CP) for practical applications of a proton exchange membrane water electrolyzer (PEMWE). The Ni and W contents in the catalysts were controlled by adjusting the concentration of Ni and W precursors during electrodeposition. The as-prepared catalyst had an amorphous structure due to the addition of W. The activities of NixW100–x/Cu NW/CP catalysts were ev
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