Two-step electrochemical oxidation enables synergistic Fe3+ doping and PO43− modification of nickel-based catalysts for efficient oxygen evolution

Zhiheng He; Wenxuan Li; Runyu Jin; Xiaotong Mao; Senyuan Li; Ke Tang; Wenyu Huang; Fangyan Xie; Jian Chen; Nan Wang; Yanshuo Jin; Hui Meng

doi:10.1039/D6CC01978A

Two-step electrochemical oxidation enables synergistic Fe³⁺ doping and PO₄³⁻ modification of nickel-based catalysts for efficient oxygen evolution

Zhiheng He,^a Wenxuan Li,

^a Runyu Jin,^a Xiaotong Mao,^a Senyuan Li,^a Ke Tang,^a Wenyu Huang,^b Fangyan Xie,^b Jian Chen,^b Nan Wang,

^a Yanshuo Jin*^a and Hui Meng

*^a

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* Corresponding authors

^a Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Key Laboratory of Nanophotonic Manipulation, Department of Physics, Jinan University, Guangzhou, Guangdong 510632, P. R. China
E-mail: jinyanshuo@email.jnu.edu.cn, tmh@jnu.edu.cn

^b Instrumental Analysis & Research Center, Sun Yat-sen University, Guangzhou, Guangdong, P.R. China

Abstract

A two-step electrochemical oxidation strategy is developed to fabricate a (Fe³⁺, PO₄³⁻)–Ni(OH)₂/NiOOH catalyst on a commercial nickel mesh with an optimal ratio of 0.1 mM Fe³⁺ and 5 mM PO₄³⁻ for an alkaline OER. It delivers significantly boosted OER activity and robust 100-hour long-term cycling stability, offering a facile avenue for electrocatalyst design.

This article is part of the themed collection: ChemComm Electrocatalysis

Chemical Communications

Two-step electrochemical oxidation enables synergistic Fe³⁺ doping and PO₄³⁻ modification of nickel-based catalysts for efficient oxygen evolution

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Two-step electrochemical oxidation enables synergistic Fe³⁺ doping and PO₄³⁻ modification of nickel-based catalysts for efficient oxygen evolution

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