Nickel Selenide Derived from [Ni(en)₃](SeO₃) Complex for Efficient Electrocatalytic Overall Water Splitting

Authors

Dan-dan CHEN, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China;
Xue-qing GAO, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China;
Hong-fei LIU, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China;
Wei ZHANG, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China;Follow
Rui CAO, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China;Department of Chemistry, Renmin University of China, Beijing 100872, China;Follow

Corresponding Author

Wei ZHANG(zw@snnu.edu.cn);
Rui CAO(ruicao@ruc.edu.cn)

Abstract

Electrocatalytic water splitting is considered as a promising technology for renewable energy. The development of efficient, stable, cost-effective, and bifunctional catalysts for both water reduction and oxidation has continued to face significant challenges. Herein, we report a robust and highly active nickel selenide (NiSe) spheres grown on carbon cloth (CC) by electrodeposition from a nickel selenite complex which is a single source containing both Ni and Se. A combination of two chemicals containing, separately, Ni and Se is used in traditional preparations of metal selenides, causing possible problems in the uniformity of the products. The as-prepared NiSe-EA/CC electrode exhibited electrocatalytic activities toward both water reduction and oxidation, with overpotentials of 154 mV at 10 mA·cm^-2 and 250 mV at 20 mA·cm^-2, respectively. A water electrolysis cell could realize a current density of 10 mA·cm^-2 at a cell voltage of 1.53 V with excellent stability, when using NiSe-EA/CC electrode as both the anode and the cathode.

Graphical Abstract

Keywords

electrocatalysis, nickel selenide, water splitting, hydrogen evolution reaction, oxygen evolution reaction

DOI Link

https://doi.org/10.13208/j.electrochem.181141

Publication Date

2019-10-28

Online Available Date

2019-10-28

Revised Date

2019-09-29

Received Date

2019-05-07

Recommended Citation

Dan-dan CHEN, Xue-qing GAO, Hong-fei LIU, Wei ZHANG, Rui CAO. Nickel Selenide Derived from [Ni(en)₃](SeO₃) Complex for Efficient Electrocatalytic Overall Water Splitting[J]. Journal of Electrochemistry, 2019 , 25(5): 553-561.
DOI: 10.13208/j.electrochem.181141
Available at: https://jelectrochem.xmu.edu.cn/journal/vol25/iss5/3