1. School of Naval Architecture and Maritime, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, P. R. China
2. Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
3. Guangzhou Power Supply Bureau, Guangdong Power Grid Co., Ltd., No. 2 of Tianhe nan 2nd Rd, Guangzhou, Guangdong, 510620, P. R. China