Stringing Bimetallic Metal-Organic Framework-Derived Cobalt Phosphide Composite for High-Efficiency Overall Water Splitting

Advanced Science
Lulu ChaiShaoming Huang

Abstract

Water electrolysis is an emerging energy conversion technology, which is significant for efficient hydrogen (H2) production. Based on the high-activity transition metal ions and metal alloys of ultrastable bifunctional catalyst, the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are the key to achieving the energy conversion method by overall water splitting (OWS). This study reports that the Co-based coordination polymer (ZIF-67) anchoring on an indium-organic framework (InOF-1) composite (InOF-1@ZIF-67) is treated followed by carbonization and phosphorization to successfully obtain CoP nanoparticles-embedded carbon nanotubes and nitrogen-doped carbon materials (CoP-InNC@CNT). As HER and OER electrocatalysts, it is demonstrated that CoP-InNC@CNT simultaneously exhibit high HER performance (overpotential of 153 mV in 0.5 m H2SO4 and 159 mV in 1.0 m KOH) and OER performance (overpotential of 270 mV in 1.0 m KOH) activities to reach the current density of 10 mA cm-2. In addition, these CoP-InNC@CNT rods, as a cathode and an anode, can display an excellent OWS performance with η10 = 1.58 V and better stability, which shows the satisfying electrocatalyst for the OWS compared to control materials. This method ...Continue Reading

References

Aug 7, 2012·Nature Materials·Saioa CoboVincent Artero
Aug 30, 2012·Chemical Communications : Chem Comm·Jinjie QianMaochun Hong
May 28, 2015·Angewandte Chemie·Jinshui Zhang, Xinchen Wang
Dec 23, 2016·ACS Applied Materials & Interfaces·Ali HanPingwu Du
Mar 15, 2018·Accounts of Chemical Research·Bo You, Yujie Sun
Mar 30, 2018·Journal of the American Chemical Society·Sibo WangXiong Wen David Lou

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Citations

Jul 15, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Anurupa Maiti
Aug 20, 2020·Chemical Communications : Chem Comm·Xian WangShaoming Huang
Jan 5, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Ji-Sen LiMeng-Jie Huang
Dec 18, 2020·Frontiers in Chemistry·Wenjuan HanJianping Yang
May 7, 2021·Chemical Communications : Chem Comm·Yuyun ChenXuecai Tan
May 19, 2021·Chemical Society Reviews·Shao-Hai LiYi-Jun Xu
Jul 11, 2021·Small·Lulu ChaiMaochun Hong
Jul 8, 2021·Nanoscale·Hui WenRui Guo
Jul 28, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Yuxuan GuoQichun Zhang

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Methods Mentioned

BETA
electron diffraction
X‐ray

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