Designing highly efficient 3D porous Ni-Fe sulfide nanosheets based catalyst for the overall water splitting through component regulation

Zhiyi Pan; Muhammad Yaseen; Pei Kang Shen; Yongzhong Zhan

doi:10.1016/j.jcis.2022.02.085

Designing highly efficient 3D porous Ni-Fe sulfide nanosheets based catalyst for the overall water splitting through component regulation

J Colloid Interface Sci. 2022 Jun 15:616:422-432. doi: 10.1016/j.jcis.2022.02.085. Epub 2022 Feb 22.

Authors

Zhiyi Pan¹, Muhammad Yaseen², Pei Kang Shen³, Yongzhong Zhan⁴

Affiliations

¹ School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, PR China; Collaborative Innovation Center of Sustainable Energy Materials, School of Resources, Environment and Materials, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning 530004, PR China.
² Institute of Chemical Sciences, University of Peshawar, 25120 KP, Pakistan.
³ Collaborative Innovation Center of Sustainable Energy Materials, School of Resources, Environment and Materials, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning 530004, PR China. Electronic address: pkshen@gxu.edu.cn.
⁴ School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, PR China; Collaborative Innovation Center of Sustainable Energy Materials, School of Resources, Environment and Materials, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning 530004, PR China. Electronic address: zyzmatres@aliyun.com.

PMID: 35220189
DOI: 10.1016/j.jcis.2022.02.085

Abstract

Constructing efficient and stable bifunctional catalysts is essential to improve the conversion efficiency of overall water splitting (OWS). In this work, 3D porous Ni-Fe sulfide nanosheets supported on nickel foam (Ni-Fe-S/NF) were synthesized by a facile hydrothermal method. The optimized Ni₃S₂-FeS/NF-2 electrode realized ultra-high efficiency for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). Benefiting from the unique 3D porous nanosheets structure and the strong electronic interactions between Ni₃S₂ and FeS through component regulation, low overpotentials of 253 and 262 mV are required to drive a current density of 100 mA cm^-2 for OER and HER, respectively. Importantly, Ni₃S₂-FeS/NF-2 bifunctional catalyst only needs 1.55 and 1.75 V at 10 and 100 mA cm^-2 respectively and works continuously for at least 100 h. The work thus provides an extraordinary promising catalyst for OWS and can be envisioned of potential for large-scale applications.

Keywords: Component regulation; Electron interactions; Ni-Fe sulfide; Overall water splitting; Porous nanosheets.

MeSH terms

Catalysis
Hydrogen* / chemistry
Oxygen
Porosity
Sulfides
Water* / chemistry

Substances

Sulfides
Water
Hydrogen
Oxygen