Carbon-coated metal-doped cerium oxide lithium air battery catalyst and preparation method thereof

The invention discloses a carbon-coated metal-doped cerium oxide lithium air battery catalyst which is characterized in that the carbon-coated metal-doped cerium oxide lithium air battery catalyst has an octahedral structure, and the surface of the carbon-coated metal-doped cerium oxide lithium air battery catalyst is uniformly coated with a carbon layer; the active component of the carbon-coated metal-doped cerium oxide lithium air battery catalyst is oxyphilic metal-doped CeO2, oxyphilic metal is doped on the surface of CeO2, and a carbon coating layer is on the outermost layer. The prepared carbon-coated metal-doped cerium oxide lithium air battery catalyst has high Ce < 3 + > content and an obvious defect structure, the affinity of the catalyst to oxygen is enhanced, the discharge reaction of the battery is promoted, and the specific discharge capacity of the lithium air battery under high current density is improved. 本发明公开了一种碳包覆金属掺杂氧化铈锂空气电池催化剂，其特征在于：碳包覆金属掺杂氧化铈锂空气电池催化剂具有八面体结构，且表面被碳层均匀包覆；所述碳包覆金属掺杂氧化铈锂空气电池催