Selenide-based 3D folded polymetallic nanosheets for a highly efficient oxygen evolution reaction

Tianning Zhou; Jie Bai; Yihao Gao; Linxiu Zhao; Xiaofei Jing; Yaqiong Gong

doi:10.1016/j.jcis.2022.01.139

Selenide-based 3D folded polymetallic nanosheets for a highly efficient oxygen evolution reaction

J Colloid Interface Sci. 2022 Jun:615:256-264. doi: 10.1016/j.jcis.2022.01.139. Epub 2022 Jan 25.

Authors

Tianning Zhou¹, Jie Bai¹, Yihao Gao¹, Linxiu Zhao¹, Xiaofei Jing², Yaqiong Gong³

Affiliations

¹ School of Chemical Engineering and Technology, North University of China, Taiyuan, 030051, PR China.
² Northeast Normal University, Key Lab Polyoxometalate Sci, Minist Educ, Changchun, 130024, PR China. Electronic address: jingxf100@nenu.edu.cn.
³ School of Chemical Engineering and Technology, North University of China, Taiyuan, 030051, PR China; Northeast Normal University, Key Lab Polyoxometalate Sci, Minist Educ, Changchun, 130024, PR China. Electronic address: gyq@nuc.edu.cn.

PMID: 35134480
DOI: 10.1016/j.jcis.2022.01.139

Abstract

Electrochemical water splitting, which is considered to be one of the fruitful strategies to achieve efficient and pollution-free hydrogen production, has been deemed as a key technology to achieve renewable energy conversion. Oxygen evolution reaction (OER) is a decisive step in water splitting. Slow kinetics seriously limits the effective utilization of energy thus it is extremely urgent to develop electrocatalysts that can effectively reduce the reaction energy barrier thus accelerate OER kinetics. Here, Mn-Co_0.85Se/NiSe₂/NF nanosheets with 3D folded structure was assembled on Ni foam by electrodeposition and vapor-deposition method. Mn-Co_0.85Se/NiSe₂/NF can achieve a current density of 10 mA cm^-2 with only 175 mV overpotential in an alkaline environment of 1 M KOH, which is much lower than other reported catalysts. In addition, catalyst Mn-Co_0.85Se/NiSe₂/NF also performed well in long-term stability tests. Through the synergy of polymetallic, the improvement of catalyst surface energy together with the tuning of electronic structure and the optimization of conductivity can be realized. This work may provide a feasible strategy for the design of efficient selenide-based oxygen evolution reaction catalysts.

Keywords: Oxygen evolution reaction; Polymetallic; Pore structure; Transition metal selenides.