Electrochemical reactions involving oxygen molecule often post challenges for the wide-spread utilizations of energy conversion and utilization devices, such as polymer electrolyte membrane (PEM)-based fuel cell and electrolyzer, because of their slow reaction kinetics. Impressive progresses have been made in recent years in the area of electrocatalyst designs with the rapid advancements in both first principle calculation and new capability in the synthesis of various classes of materials. In this presentation, I will present our recent work on the bimetallic low-platinum group metal (PGM) and non-PGM nanostructures as catalysts for electrochemical reduction of oxygen through the understanding structural controls at enhanced temperature and in chemical vapor atmospheres. We noted that reactive environments in solution and under reactive gas phase can facilitate the surface structure and composition designs with high-level of accuracy. On the oxygen evolution catalysts, I will examine the new design strategies for acid-stable ternary oxide compounds that are beyond the catalysts made of iridium and ruthenium oxides.

Recent development of oxygen reduction and evolution electrocatalysts under reactive environments

254th National Meeting (2017)

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