Ulsan National Institute of Science and Technology · Energy
김형준 교수의 연구실은 고도로 분산된 백금족 메탈 촉매 및 상호금속화물 나노구조를 중심으로 나노촉매의 구조-활동 상관관계를 규명하고 있습니다. 원자적으로 분산된 촉매의 안정적 합성 전략과 메세포러스 실리카 템플릿을 활용한 정밀한 나노구조 제어 기반으로 전기화학 반응, 특히 산소 환원 반응의 고성능 촉매 개발에 주력하고 있습니다. 이론적 분석과 실험을 융합하여 촉매의 전자적 특성과 반응 메커니즘의 기초 원리를 규명하고 있습니다.
Figures are computed from collected data and may differ slightly.
Atomically dispersed precious metal catalysts have emerged as a frontier in catalysis. However, a robust, generic synthetic strategy toward atomically dispersed catalysts is still lacking, which has limited systematic studies revealing their general catalytic trends distinct from those of conventional nanoparticle (NP)-based catalysts. Herein, we report a general synthetic strategy toward atomically dispersed precious metal catalysts, which consists of "trapping" precious metal precursors on a h
Pt-based intermetallic nanostructures have demonstrated higher electrocatalytic performances compared to random alloy structures. However, the origin of their enhanced catalytic properties remains elusive. Furthermore, a robust synthetic strategy for well-defined intermetallic nanostructures represents a challenge. Here, we reveal by combining theoretical and experimental results that the activity enhancement in intermetallic structures for the oxygen reduction reaction (ORR) originates from an
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