Organophosphoric acid-derived CoP quantum dots@S,N-codoped graphite carbon as a trifunctional electrocatalyst for overall water splitting and Zn-air batteries

Nanoscale
Tao MengMinhua Cao

Abstract

Developing highly efficient, low-cost, and multifunctional electro-catalysts to replace noble metals is of significant importance for energy storage and conversion systems. Herein, we demonstrate a facile strategy for the preparation of CoP quantum dots (QDs) embedded in S,N-codoped graphite carbon (CoP@SNC) by using organophosphoric acid as both phosphorus and carbon sources. Benefiting from the strong coupling and synergistic effect between CoP QDs and highly conductive S,N-codoped carbon, well-structured porosity and high specific surface area, the resulting CoP@SNC exhibits excellent activities for oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and oxygen reduction reaction (ORR), making it a trifunctional electro-catalyst for overall water splitting and rechargeable Zn-air batteries. When CoP@SNC is used for overall water splitting, a cell voltage as low as 1.64 V is required to reach the current density of 10 mA cm-2; the obtained rechargeable Zn-air battery with CoP@SNC as the air cathode exhibits a high open-circuit voltage of 1.45 V, a very low discharge-charge voltage gap (0.83 V at 10 mA cm-2), and a long cycle life (up to 180 cycles). This work not only offers a new strategy for the synthesis of...Continue Reading

References

Oct 9, 2009·Journal of the American Chemical Society·Takaaki NakagawaRoyce W Murray
Aug 7, 2012·Nature Materials·Saioa CoboVincent Artero
May 9, 2013·Nature Communications·Yanguang LiHongjie Dai
Aug 28, 2013·Nature Communications·Yong ZhaoKazuhito Hashimoto
Nov 1, 2013·Journal of the American Chemical Society·Charles C L McCroryThomas F Jaramillo
Apr 29, 2014·Nature Communications·Yao ZhengShi Zhang Qiao
Sep 5, 2014·Journal of the American Chemical Society·Yuying MengTewodros Asefa
Sep 13, 2014·Journal of the American Chemical Society·Tian Yi MaShi Zhang Qiao
Oct 14, 2014·Journal of the American Chemical Society·Youwen LiuYi Xie
Jan 28, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiaoming LvChunzhong Li
Jun 23, 2016·Chemical Communications : Chem Comm·Dehua XiongLifeng Liu
Jan 19, 2017·Journal of the American Chemical Society·Jiong WangXin Wang

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Methods Mentioned

BETA
X-ray
Raman spectroscopy
scanning electron microscopy
transmission electron microscopy
electron diffraction

Software Mentioned

ATHENA
IFEFFIT

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