1. Yunnan Energy Research Institute Co., Ltd., Kunming 650299, China
2. College of Materials Science and Engineering, National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China
3. Department of Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA
4. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China