Hierarchical Fe-doped Ni3 Se4 ultrathin nanosheets as an efficient electrocatalyst for oxygen evolution reaction

Nanoscale
Jing DuCailing Xu

Abstract

Developing highly efficient oxygen evolution reaction (OER) electrocatalysts is critical to the cost-effective generation of clean fuels. Transition-metal selenides have been proposed to be OER catalyst alternatives to noble metal based catalysts, but generally exhibit limited electrocatalytic activity. We here report hierarchical Fe-doped Ni3Se4 ((Ni,Fe)3Se4) ultrathin nanosheets as an efficient electrocatalyst for OER in alkaline electrolytes. The preparation involves a solvothermal synthesis and a topotactic conversion process. The prepared hierarchical (Ni,Fe)3Se4 ultrathin nanosheets show abundant and accessible catalytically active sites, facile charge transfer and a high specific surface area. Relative to the Ni3Se4 nanosheets, the as-prepared (Ni,Fe)3Se4 ultrathin nanosheets show a higher current density and a lower Tafel slope towards the OER. Remarkably, hierarchical (Ni,Fe)3Se4 ultrathin nanosheets supported on Ni foam exhibit an electrocatalytic OER with a current density of 10 mA cm-2 at a low overpotential of 225 mV and a small Tafel slope of about 41 mV dec-1. This study establishes (Ni,Fe)3Se4 ultrathin nanosheets as an efficient electrocatalyst for the OER that can be used in the fields of metal-air batteries a...Continue Reading

References

Feb 26, 2010·Angewandte Chemie·Mohammad Mahdi NajafpourPhilipp Kurz
Oct 14, 2014·Journal of the American Chemical Society·Youwen LiuYi Xie
Nov 8, 2014·Journal of the American Chemical Society·Fang Song, Xile Hu
Nov 6, 2015·Advanced Materials·Chuan XiaHusam N Alshareef
Jul 13, 2016·ACS Applied Materials & Interfaces·Zhaoyang WangLiqiang Mai
Aug 10, 2016·Nature Communications·Xiang XuXile Hu
Jan 14, 2017·Chemical Society Reviews·Nian-Tzu SuenHao Ming Chen
Jun 6, 2017·Nature Communications·Jingjing DuanChuan Zhao

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Citations

May 23, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Jing DuCailing Xu
Jul 19, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiaoqiang DuXiaoshuang Zhang
Nov 8, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiaoqiang DuXiaoshuang Zhang
Jun 11, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiaoqiang DuXiaoshuang Zhang
Apr 29, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiaoqiang DuXiaoshuang Zhang
Jun 30, 2021·Nanoscale·Zhao LiWenchang Zhuang

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Methods Mentioned

BETA
X-ray
atomic force microscopy
scanning electron microscopy
transmission electron microscopy
electron diffraction
AFM

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