Charge-Storage Nickel Substrate-Boosted CuP2Nanosheet for the Electrochemical Oxygen Evolution Reaction

Hao Wang; A. Jing Song; Hong Chen; Wei Meng Zhang; Zhong Hua Xue

doi:10.1021/acs.inorgchem.2c00862

Charge-Storage Nickel Substrate-Boosted CuP₂Nanosheet for the Electrochemical Oxygen Evolution Reaction

Hao Wang, A. Jing Song, Hong Chen, Wei Meng Zhang, Zhong Hua Xue^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The electrochemical oxygen evolution reaction (OER) is an essential anodic reaction that converts sustainable energy into chemical fuels, as it can provide protons and electrons. One of the most challenging research directions for the practical application of the OER is the elevation of the activity of noble-metal-free electrocatalysts. Here, we report that the nickel foam can be used as an electron-deficient substrate to tune the surface oxidation state of catalytic electrodes and thus boost the OER activity of CuP₂nanosheets via a charge-storage mechanism. The as-obtained self-standing CuP₂/Ni electrodes delivered a current density of 220 mA cm^-2at 370 mV overpotential, which is approximately 5.5 times higher than the benchmarked IrO₂on nickel foam. This work sheds some new light on the design of low-cost electrocatalysts or electrodes with high activity for the electrochemical OER.

Original language	English (US)
Pages (from-to)	12489-12493
Number of pages	5
Journal	Inorganic chemistry
Volume	61
Issue number	32
DOIs	https://doi.org/10.1021/acs.inorgchem.2c00862
State	Published - Aug 15 2022

Bibliographical note

Funding Information:
This work was financially supported by the National Natural Science Foundation of China (22105002), Anhui Agricultural University (rc382003 and 2020zd30), and the Department of Education of Anhui Province (gxgwfx2021009), China.

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

Access to Document

10.1021/acs.inorgchem.2c00862

Cite this

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title = "Charge-Storage Nickel Substrate-Boosted CuP2Nanosheet for the Electrochemical Oxygen Evolution Reaction",

abstract = "The electrochemical oxygen evolution reaction (OER) is an essential anodic reaction that converts sustainable energy into chemical fuels, as it can provide protons and electrons. One of the most challenging research directions for the practical application of the OER is the elevation of the activity of noble-metal-free electrocatalysts. Here, we report that the nickel foam can be used as an electron-deficient substrate to tune the surface oxidation state of catalytic electrodes and thus boost the OER activity of CuP2nanosheets via a charge-storage mechanism. The as-obtained self-standing CuP2/Ni electrodes delivered a current density of 220 mA cm-2at 370 mV overpotential, which is approximately 5.5 times higher than the benchmarked IrO2on nickel foam. This work sheds some new light on the design of low-cost electrocatalysts or electrodes with high activity for the electrochemical OER.",

author = "Hao Wang and Song, {A. Jing} and Hong Chen and Zhang, {Wei Meng} and Xue, {Zhong Hua}",

note = "Funding Information: This work was financially supported by the National Natural Science Foundation of China (22105002), Anhui Agricultural University (rc382003 and 2020zd30), and the Department of Education of Anhui Province (gxgwfx2021009), China. Publisher Copyright: {\textcopyright} 2022 American Chemical Society. All rights reserved.",

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AU - Song, A. Jing

AU - Chen, Hong

AU - Zhang, Wei Meng

AU - Xue, Zhong Hua

N1 - Funding Information: This work was financially supported by the National Natural Science Foundation of China (22105002), Anhui Agricultural University (rc382003 and 2020zd30), and the Department of Education of Anhui Province (gxgwfx2021009), China. Publisher Copyright: © 2022 American Chemical Society. All rights reserved.

PY - 2022/8/15

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N2 - The electrochemical oxygen evolution reaction (OER) is an essential anodic reaction that converts sustainable energy into chemical fuels, as it can provide protons and electrons. One of the most challenging research directions for the practical application of the OER is the elevation of the activity of noble-metal-free electrocatalysts. Here, we report that the nickel foam can be used as an electron-deficient substrate to tune the surface oxidation state of catalytic electrodes and thus boost the OER activity of CuP2nanosheets via a charge-storage mechanism. The as-obtained self-standing CuP2/Ni electrodes delivered a current density of 220 mA cm-2at 370 mV overpotential, which is approximately 5.5 times higher than the benchmarked IrO2on nickel foam. This work sheds some new light on the design of low-cost electrocatalysts or electrodes with high activity for the electrochemical OER.

AB - The electrochemical oxygen evolution reaction (OER) is an essential anodic reaction that converts sustainable energy into chemical fuels, as it can provide protons and electrons. One of the most challenging research directions for the practical application of the OER is the elevation of the activity of noble-metal-free electrocatalysts. Here, we report that the nickel foam can be used as an electron-deficient substrate to tune the surface oxidation state of catalytic electrodes and thus boost the OER activity of CuP2nanosheets via a charge-storage mechanism. The as-obtained self-standing CuP2/Ni electrodes delivered a current density of 220 mA cm-2at 370 mV overpotential, which is approximately 5.5 times higher than the benchmarked IrO2on nickel foam. This work sheds some new light on the design of low-cost electrocatalysts or electrodes with high activity for the electrochemical OER.

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