(1) Preparation of nanocomposite materials and their applications in electrochemical water splitting (H2/O2 production), urea/alcohol small molecule electrocatalysis, etc .; (2) Construction of non-precious metal efficient ORR catalyst and its application in zinc air fuel cell or hydrogen fuel cell; (3) Preparation of nanocomposite materials and their applications in catalytic hydrolysis hydrogen production (NaBH4/NH3BH3) and water treatment (removal of heavy metal ions and organic matter).