1. State Key Laboratory of Advanced Electromagnetic Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, PR China
2. Huadian Electric Power Research Institute Co., Ltd, Hangzhou 310030, China
3. Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, PR China