Issue 14, 2023

Defect engineering and atomic doping of porous Co-Ni2P nanosheet arrays for boosting electrocatalytic oxygen evolution

Abstract

Electrochemical hydrogen production by splitting water is mainly limited to the oxygen evolution reaction (OER), which requires high energy consumption. The design of an efficient and stable electrochemical catalyst is the key to solving this problem. Here, a three-dimensional porous Co-doped Ni2P nanosheet (Co-Ni2P/NF-corr) was synthesized by simple hydrothermal, acid leaching and phosphating processes successively. Excitingly, the current density of Co-Ni2P-corr in 1 M KOH solution can reach 50 mA cm−2 with only 267 mV overpotential. Moreover, the Tafel slope is very small, only 64 mV dec−1. In addition, the stability test shows that it can work stably at 50 mA cm−2 current density for at least 48 h.

Graphical abstract: Defect engineering and atomic doping of porous Co-Ni2P nanosheet arrays for boosting electrocatalytic oxygen evolution

Supplementary files

Article information

Article type
Paper
Submitted
05 Apr 2023
Accepted
31 May 2023
First published
02 Jun 2023
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2023,5, 3691-3696

Defect engineering and atomic doping of porous Co-Ni2P nanosheet arrays for boosting electrocatalytic oxygen evolution

Q. Wang, H. Ma, X. Ren, X. Sun, X. Liu, D. Wu and Q. Wei, Nanoscale Adv., 2023, 5, 3691 DOI: 10.1039/D3NA00217A

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