1. Nano‐Electrochemistry Laboratory Department of Chemical Engineering National Taiwan University of Science and Technology Taipei 106 Taiwan
2. National Synchrotron Radiation Research Center Hsin‐Chu 30076 Taiwan
3. Graduate School of Life Science and Systems Engineering Kyushu Institute of Technology Fukuoka 808‐0196 Japan
4. Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei 106 Taiwan
5. Sustainable Energy Development Center National Taiwan University of Science and Technology Taipei 106 Taiwan
6. Department of Chemistry Stanford University Stanford CA 94305 USA