Co2 P@N,P-Codoped Carbon Nanofiber as a Free-Standing Air Electrode for Zn-Air Batteries: Synergy Effects of CoNx Satellite Shells

ACS Applied Materials & Interfaces
Jingchang GaoLinfei Lai

Abstract

Here, a free-standing electrode composed of cobalt phosphides (Co2P) supported by cobalt nitride moieties (CoNx) and an N,P-codoped porous carbon nanofiber (CNF) in one-step electrospinning of environmentally friendly benign phosphorous precursors is reported. Physiochemical characterization revealed the symbiotic relationship between a Co2P crystal and surrounding nanometer-sized CoNx moieties embedded in an N,P-codoped porous carbon matrix. Co2P@CNF shows high oxygen reduction reaction and oxygen evolution reaction performance owing to the synergistic effect of Co2P nanocrystals and the neighboring CoNx moieties, which have the optimum binding strength of reactants and facilitate the mass transfer. The free-standing Co2P@CNF air-cathode-based Zn-air batteries deliver a power density of 121 mW cm-2 at a voltage of 0.76 V. The overall overpotential of Co2P@CNF-based Zn-air batteries can be significantly reduced, with low discharge-charge voltage gap (0.81 V at 10 mA cm-2) and high cycling stability, which outperform the benchmark Pt/C-based Zn-air batteries. The one-step electrospinning method can serve as a universal platform to develop other high-performance transition-metal phosphide catalysts benefitting from the synergy ef...Continue Reading

References

May 27, 2010·Chemical Society Reviews·Yonghong BingJiujun Zhang
Nov 1, 2013·Journal of the American Chemical Society·Charles C L McCroryThomas F Jaramillo
Jun 14, 2014·Chemical Society Reviews·Yanguang Li, Hongjie Dai
Aug 8, 2015·Nature Communications·Hai-Wei LiangKlaus Müllen
Apr 19, 2012·The Journal of Physical Chemistry Letters·B D McCloskeyA C Luntz
Nov 1, 2016·Journal of the American Chemical Society·Gong ZhangJinghong Li
Aug 29, 2017·Journal of the American Chemical Society·Fadl H SaadiNathan S Lewis

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Citations

May 19, 2021·Chemical Society Reviews·Shao-Hai LiYi-Jun Xu
Jul 28, 2019·ACS Applied Materials & Interfaces·Peng RaoXinsheng Zhao

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