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本文采用射频磁控溅射法和真空退火法制备了N/C薄膜,并将其用作燃料电池阴极氧还原反应催化剂。通过改变退火温度,有效地控制了N/C薄膜中氮的化学键态,剪裁了薄膜催化剂对氧还原反应的催化活性。建立了催化活性和氮的化学键态的关系,最终可以明确哪种氮的化学键态是有效的氧还原催化活性位。
In this paper, RF magnetron sputtering and vacuum annealing were used to prepare N / C thin films, which were used as cathode oxygen reduction catalysts for fuel cells. By changing the annealing temperature, the chemical bond state of nitrogen in the N / C thin film is effectively controlled, and the catalytic activity of the thin film catalyst for the oxygen reduction reaction is tailored. The relationship between the catalytic activity and the chemical bond state of nitrogen has been established, and finally it can be determined which chemical bond state of nitrogen is an effective catalytic site for oxygen reduction.