The Oxygen Reduction Reaction And Oxygen Precipitation Bifunctional Catalysts For High Efficiency And High Performance Metal Air Batteries

It is of great significance to study the oxygen reduction reaction(ORR)and oxygen precipitation(OER)bifunctional catalysts for high efficiency and high performance metal air batteries,especially lithium air batteries.As a new type of metal organic polymer,polypyrrole(PPy)has attracted much interest of researchers because of its excellent conductivity and porosity.The different transition metal and PPy compound,organic polymer composite metal catalyst PPy-metal is obtained,followed by a lot of postprocessing,and characterized,and in alkaline electrolyte with their OER and ORR performance evaluation.In this experiment,the precursor PPy was synthesized by ice water bath polymerization,and then PPy and transition metal ions were mixed by hydrothermal method and calcination method to obtain PPy-(Co,Ni,Fe,etc.).These composite catalysts not only have the characteristics of easy conductivity and large specific surface area of PPy,but also have the same catalytic activity in the electrochemical reaction.