1. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Key Laboratory of High Density Electromagnetic Power and Systems (Chinese Academy of Sciences), Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
4. The Open Project of Salt Lake Chemical Engineering Research Complex, Qinghai University, Xining, Qinghai 810016, China
5. College of Chemical Engineering, Qinghai University, Xining, Qinghai 810016, China
6. Qinghai Key Laboratory of Salt Lake Materials Chemical Engineering, Qinghai University, Xining, Qinghai 810016, China