Core-shell structured bifunctional catalysts for metal air battery/fuel cell

摘要

The present invention relates to a bifunctional catalyst for use with air metal batteries and fuel cell. The bifunctional catalyst comprising a core and a shell, where the core comprises a metal oxide and the shell comprises a carbon nanostructure. In a further aspect the bifunctional catalyst is catalytically active for oxygen reduction and oxygen evolution reactions.

主权项

1. A bifunctional catalyst for an air metal battery or fuel cell comprising:
a) a core comprising one or more metal oxides and b) a porous shell comprising two or more carbon nanostructures and wherein, the carbon nanostructures are rods, wires, fibers or tubes having an elongate structure wherein one end of the elongate structure is bound to the core and the carbon nanostructures extending from the surface of the core form the porous shell and wherein, the porous shell functions predominantly as an oxygen reduction reaction catalyst while allowing access to the core which functions predominantly as an oxygen evolution reaction catalyst.