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 journalArticlepeer-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 languageEnglish (US)
Pages (from-to)12489-12493
Number of pages5
JournalInorganic chemistry
Volume61
Issue number32
DOIs
StatePublished - Aug 15 2022

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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