Fe-N-C catalysts represent the most promising class of platinum group metal-free(PGM-free)catalysts for the oxygen reduction reaction(ORR)in proton exchange membrane fuel cells(PEMFCs),exhibiting intrinsic activity po...Fe-N-C catalysts represent the most promising class of platinum group metal-free(PGM-free)catalysts for the oxygen reduction reaction(ORR)in proton exchange membrane fuel cells(PEMFCs),exhibiting intrinsic activity potentially competitive with commercial Pt/C benchmarks.However,critical challenges persist[1].As revealed by theoretical calculations,the enhancement of intrinsic activity in Fe-N-C catalysts is constrained by inherent scaling relations among the adsorption free energies of ORR intermediates on the catalyst surface.展开更多
文摘Fe-N-C catalysts represent the most promising class of platinum group metal-free(PGM-free)catalysts for the oxygen reduction reaction(ORR)in proton exchange membrane fuel cells(PEMFCs),exhibiting intrinsic activity potentially competitive with commercial Pt/C benchmarks.However,critical challenges persist[1].As revealed by theoretical calculations,the enhancement of intrinsic activity in Fe-N-C catalysts is constrained by inherent scaling relations among the adsorption free energies of ORR intermediates on the catalyst surface.
