1. Advanced Battery Technology Center School of New Energy Harbin Institute of Technology Weihai 264209 China
2. Advanced Battery Technology Center School of Materials Science and Engineering Harbin Institute of Technology Weihai 264209 China
3. R&D Center Wanxiang A123 Systems Corp Hangzhou 311215 China
4. School of Engineering Brown University Providence RI 02912 USA
5. Electrochemical Energy Storage Chemical Sciences and Engineering Division Argonne National Laboratory 9700 South Cass Avenue Building 205 Argonne IL 60439‐4837 USA