1. Ningbo Institute of Materials Technology and EngineeringChinese Academy of Sciences Ningbo 315201 P. R. China
2. Department of Chemical and Biological EngineeringThe University of British Columbia Vancouver V6T 1Z3 Canada
3. Clean Energy Research Center (CERC)The University of British Columbia Vancouver V6T 1Z3 Canada
4. University of Chinese Academy of Sciences Beijing 100049 P. R. China
5. Department of Material Science and EngineeringBeijing University of Chemical Technology Beijing 100029 P. R. China
6. National Synchrotron Radiation LaboratoryUniversity of Science and Technology of China Hefei 230029 P. R. China
7. Department of ChemistryOregon State University Corvallis OR 97331‐4003 USA