Recently,carbonized metal-organic frameworks(MOFs)with abundant transition metalnitrogen/carbon(M-N/C)have been explored with impressive oxygen electro-catalytic performance.However,an activity gap still exists between the traditional MOFs-derived catalysts and noblemetal catalysts,which is partially due to their reduced exposure of active sites and increased mass diffusion resistance for the destruction of MOFs-intrinsic pore structures during the pyrolysis process.Therefore,developing MOFs-derived structure with high surface area and abundant mesopores is highly desired.