Presentation Information
[3F08]In-situ observation of the interfacial reactive intermediate on CoNiOx electrocatalysts for the oxygen evolution reaction
*Shanyun Mo1, Hidenori Noguchi1,2 (1. Graduate School of Chemical Sciences and Engineering, Hokkaido University, 2. Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science (NIMS))
Summary
We present a non-noble bimetallic catalyst, CoNiOx, synthesized via a sol–gel method, as an efficient oxygen evolution reaction (OER) electrocatalyst. By controlling the synthesis temperature, the electrochemical performance for the OER can be systematically tuned. In situ surface-enhanced infrared absorption spectroscopy (SEIRAS) was employed to investigate the reaction process at the electrode interface. Under the selected experimental conditions, we propose a reaction pathway involving the formation of the OOH intermediate. The distinct roles of Co2+ and Co3+ species in the OER were also elucidated.
We present a non-noble bimetallic catalyst, CoNiOx, synthesized via a sol–gel method, as an efficient oxygen evolution reaction (OER) electrocatalyst. By controlling the synthesis temperature, the electrochemical performance for the OER can be systematically tuned. In situ surface-enhanced infrared absorption spectroscopy (SEIRAS) was employed to investigate the reaction process at the electrode interface. Under the selected experimental conditions, we propose a reaction pathway involving the formation of the OOH intermediate. The distinct roles of Co2+ and Co3+ species in the OER were also elucidated.