1. Graduate School of Engineering Kyoto University Nishikyo‐ku Kyoto 615‐8510 Japan
2. PRESTO Japan Science and Technology Agency (JST) Kawaguchi Saitama 332‐0012 Japan
3. Elements Strategy Initiative for Catalysts and Batteries (ESICB) Kyoto University Sakyo‐ku Kyoto 606‐8501 Japan
4. SR Center Ritsumeikan University Kusatsu Shiga 525‐8577 Japan
5. Japan Synchrotron Radiation Research Institute (JASRI) Sayo Hyogo 679‐5198 Japan
6. CREST Japan Science and Technology Agency (JST) Kawaguchi Saitama 332‐0012 Japan