The influence of the type of N dopping on the performance of bifunctional N-doped ordered

The influence of the type of N dopping on the performance of bifunctional N-doped ordered mesoporous carbon electrocatalysts in oxygen

reduction and evolution reaction

Meng Li;Ziwu Liu;Fang Wang;Jinjin Xuan

【期刊名称】《天然气化学（英文版）》 【年(卷),期】2017(026)003

【摘要】To develop more ideal bifunctional heteroatom-doped carbon electrocatalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) for regenerative fuel cells and rechargeable metal-air batteries,herein,tobacco-derived N-containing ordered mesoporous carbon (N-OMC) electrocatalysts with different N species distributions are designed.Results indicate that the as-prepared N-OMC with more pyrrolic and pyridinic Ns exhibits much higher activities for the ORR and OER than N-OMC with more graphitic N in both acidic and alkaline media,suggesting that the increase of pyrrolic and pyridinic Ns favors the improvement of ORR and OER activities of the N-containing carbon catalysts,and showing a great potential for the designing of more effective,lower-cost ORR and OER bifunctional electrocatalysts for future regenerative fuel cells and rechargeable metal-air batteries. 【总页数】6页(422-427)