Prussian blue analogue assisted formation of iron doped CoNiSe2 nanosheet arrays for efficient oxygen evolution reaction

Yaoxia Yang; Fengyao Guo; Lan Zhang; Dangxia Wang; Xingwei Guo; Xiaozhong Zhou; Dongfei Sun; Zhiwang Yang; Ziqiang Lei

doi:10.1016/j.jcis.2022.06.132

Prussian blue analogue assisted formation of iron doped CoNiSe₂ nanosheet arrays for efficient oxygen evolution reaction

J Colloid Interface Sci. 2022 Nov 15:626:68-76. doi: 10.1016/j.jcis.2022.06.132. Epub 2022 Jun 27.

Authors

Yaoxia Yang¹, Fengyao Guo², Lan Zhang², Dangxia Wang², Xingwei Guo², Xiaozhong Zhou², Dongfei Sun², Zhiwang Yang², Ziqiang Lei²

Affiliations

¹ Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China. Electronic address: yaoxiayang@nwnu.edu.cn.
² Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.

PMID: 35780553
DOI: 10.1016/j.jcis.2022.06.132

Abstract

Electrochemical water splitting is a promising approach to produce hydrogen gas, but sluggish four-electron transfer of the oxygen evolution reaction (OER) severely limits the overall energy conversion efficiency of water splitting. Herein, as an excellent OER electrocatalyst, a technique of synthesizing Fe doped CoNiSe₂ nanosheet (Fe-CoNiSe₂) whole series using CoFe prussian blue analog produced by Co-ZIF-L reaction as a template is proposed here. The introduction of iron ions promotes the redistribution of the cobalt-nickel charge density, which enhances the OER kinetics. In view of the abovementioned points, Fe-CoNiSe₂/NF has excellent activity, electrocatalytic properties and excellent stability in alkaline media, which only demands a lower overpotential of 244 mV and 271 mV to deliver a current density of 10 mA cm^-2 and 50 mA cm^-2, respectively. The material also exhibits excellent stability for at least 24 h during the OER process. This work may provide some new insights into the assembly of advanced and highly-active materials for a variety of other energy conversion applications.

Keywords: Electrocatalysis; Iron doping; Nanostructures; Nickel cobalt selenide; Oxygen evolution reaction.