Hierarchical porous tri-metallic NiCoFe-Se/CFP derived from Ni-Co-Fe Prussian blue analogues as efficient electrocatalyst for oxygen evolution reaction

Yajie Guo; Kelun Jia; Fei Dai; Yongjie Liu; Chunrui Zhang; Jibo Su; Ke Wang

doi:10.1016/j.jcis.2023.04.003

Hierarchical porous tri-metallic NiCoFe-Se/CFP derived from Ni-Co-Fe Prussian blue analogues as efficient electrocatalyst for oxygen evolution reaction

J Colloid Interface Sci. 2023 Jul 15:642:638-647. doi: 10.1016/j.jcis.2023.04.003. Epub 2023 Apr 3.

Authors

Yajie Guo¹, Kelun Jia¹, Fei Dai², Yongjie Liu³, Chunrui Zhang¹, Jibo Su¹, Ke Wang⁴

Affiliations

¹ School of Materials Science and Engineering, Chang'an University, Xi'an, Shaanxi 710064, China.
² Laboratory of Distributed Energy System and Renewable Energy, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China.
³ School of Materials Science and Engineering, Chang'an University, Xi'an, Shaanxi 710064, China; Beijing Key Laboratory of Ionic Liquids Clean Process, CAS, Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Innovation Academy for Green Manufacture, CAS; Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
⁴ Beijing Key Laboratory of Ionic Liquids Clean Process, CAS, Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Innovation Academy for Green Manufacture, CAS; Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Huizhou Institute of Green Energy and Advanced Materials, Huizhou, Guangdong 516081, China. Electronic address: kewang@ipe.ac.cn.

PMID: 37030200
DOI: 10.1016/j.jcis.2023.04.003

Abstract

The progress of inexpensive, high-efficiency, and steady oxygen evolution reaction (OER) electrocatalysts is of great importance to promoting water splitting for green hydrogen production. Herein, tri-metallic NiCoFe selenide catalyst backed up by carbon fiber paper (CFP) was synthesized by a facile selenization of NiCoFe Prussian blue analogues (PBAs) for OER in alkaline solutions. The NiCoFe-Se/CFP inherited the porous nanostructure of the metal-organic frameworks (MOFs) precursors prepared by rapid cyclic voltammetry electrodeposition. Benefiting from the 3D hierarchical porous structure, optimized electronic structure of NiCoFe selenides and high conductivity, the synthesized electrocatalyst exhibits outstanding catalytic activity to the corresponding mono-metallic or bi-metallic selenides. Specifically, the NiCoFe-Se/CFP electrode demands an overpotential of 221 mV to attain the 10 mA cm^-2 current density in 1.0 M KOH solution and a low Tafel slope of 38.6 mV dec^-1. The prepared catalyst also displays good stability and durability. These findings prove a feasible strategy to further improve the catalytic activities of non-precious metal based OER electrocatalysts by the cooperation of structure design and chemical component modification.

Keywords: 3D hierarchical porous structures; Carbon Fiber Paper (CFP); Oxygen Evolution Reaction (OER); Prussian Blue Analogues (PBAs); Tri-metallic selenides.