Soo‐Kil Kim
KAIST 에너지공학과 · 에너지
소운길 교수 연구실은 프로톤 염기성 수소 분해 전기화학 셀(PEMWE)에서 높은 활성도와 내구성을 동시에 확보할 수 있는 비백금 계 금속 및 백금 기반 전기촉매의 설계 및 제작을 핵심 연구 분야로 삼고 있습니다. 특히, 나노구조 제어, 전기화학적 도금 기반의 촉매 합성, 그리고 전해질 내 첨가제의 역할 분석을 통해 저소비량의 귀금속과 비귀금속 촉매의 실용화 가능성을 탐색하고 있습니다. 연구는 전기화학적 반응 메커니즘 이해와 함께 실질적인 전기화학적 장치 적용에 초점을 맞추고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
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
