1. College of Chemistry and Chemical Engineering, Weifang University , Weifang , Shandong 261061 , P. R. China
2. Kohodo (Weifang Free Trade Zone) Hydrogen Technology Co., Ltd , Weifang , Shandong 261031 , P. R. China
3. Shenzhen Kohodo Hydrogen Energy Co., Ltd. , Shenzhen , Guangdong 518109 , P. R. China