Due to the growing demands for renewable energy system, importance of development electrocatalyst for various electrochemical energy and fuel production reactions has been accentuated. Especially, Water electrolysis has been highlighted as important building blocks for energy conversion and storage concepts in aqueous system. In particular, water electrolyzer including oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is important for not only building blocks in hydrogen based renewable systems and but also counter parts as various electrochemical synthetic reaction including CO<sub>2</sub> and N<sub>2</sub> production. To replace noble metal based system, lots of candidates including oxide, sulfide and phosphide etc. have been vigorously suggested however, there is still lack of clear design criteria. In here, we would like to discuss several factors to be considered as important factor. The design of electrocatalyst for HER and OER must be ruled by the several factors including activity, stability and electrical conductivity. Furthermore, we will present the how importance of balancing these factors to achieve efficient electrocatalyst for water electrolyzer reaction based on several examples.

Balancing activity-stability-conductivity as design criteria for water electrolyzer electrocatalyst

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.