Abstract It is extremely advisable but challenging to develop cathodic catalyst for efficiently catalyzing the oxygen reduction reaction (ORR) in energy storage and conversion system. Nitrogen (N) and phosphorus (P) co-doped porous carbon (C) materials have been prepared as a non-precious metal catalyst. This synthesis was achieved through pyrolysis of ethylenediaminetetraacetic acid, triphenylphosphine, melamine and CoCl2∙6H2 O mixture. The resulting material was capable of efficiently charge transfer via the coordination bond of cobalt (Co) and EDTA, that makes octahedral structure. In addition, redistribution of charge occurred due to co-doping of the N and P, which is advantageous for the oxygen reduction reaction (ORR). The as-prepared N and P co-doped mesoporous carbon (NPMPC) was characterized by a high average porosity and a high specific surface area. Furthermore, the NPMPC had a positive effect on ORR by allowing triple phases (gas-liquid-solid) to coexist in a wide range. We have successfully fabricated electrochemical catalysts that have not been reported previously. The electrocatalytic activity of NPMPC-0.6 (E onset:-0.08 V & Ehalf-wave:-0.136 V) for ORR in alkaline media was better than Pt/C (Eonset:-0.037 V & Ehalf-wave:-0.122 V). Overall, NPMPC-0.6 showed high efficiency and improved performance for oxygen reduction reaction.

中文翻译：

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P和N共掺杂EDTA与可控活性EDTA-钴位点的协同相互作用作为氧还原反应的有效电催化剂

摘要 开发阴极催化剂以有效催化能量存储和转换系统中的氧还原反应（ORR）是非常可取但具有挑战性的。已经制备了氮 (N) 和磷 (P) 共掺杂的多孔碳 (C) 材料作为非贵金属催化剂。该合成是通过乙二胺四乙酸、三苯基膦、三聚氰胺和 CoCl2∙6H2 O 混合物的热解实现的。所得材料能够通过钴 (Co) 和 EDTA 的配位键有效地进行电荷转移，从而形成八面体结构。此外，由于 N 和 P 的共掺杂，发生了电荷的重新分配，这有利于氧还原反应（ORR）。所制备的 N 和 P 共掺杂介孔碳 (NPMPC) 具有高平均孔隙率和高比表面积的特点。此外，NPMPC 通过允许三相（气-液-固）在宽范围内共存对 ORR 产生积极影响。我们已经成功地制造了以前没有报道过的电化学催化剂。NPMPC-0.6 (E onset:-0.08 V & Ehalf-wave:-0.136 V) 在碱性介质中对 ORR 的电催化活性优于 Pt/C (Eonset:-0.037 V & Ehalf-wave:-0.122 V)。总体而言，NPMPC-0.6 表现出高效率和改进的氧还原反应性能。我们已经成功地制造了以前没有报道过的电化学催化剂。NPMPC-0.6 (E onset:-0.08 V & Ehalf-wave:-0.136 V) 在碱性介质中对 ORR 的电催化活性优于 Pt/C (Eonset:-0.037 V & Ehalf-wave:-0.122 V)。总体而言，NPMPC-0.6 表现出高效率和改进的氧还原反应性能。我们已经成功地制造了以前没有报道过的电化学催化剂。NPMPC-0.6 (E onset:-0.08 V & Ehalf-wave:-0.136 V) 在碱性介质中对 ORR 的电催化活性优于 Pt/C (Eonset:-0.037 V & Ehalf-wave:-0.122 V)。总体而言，NPMPC-0.6 表现出高效率和改进的氧还原反应性能。