Nanoporous V-Doped Ni5P4 Microsphere: A Highly Efficient Electrocatalyst for Hydrogen Evolution Reaction at All pH

Yuan Rao; Siwen Wang; Ruya Zhang; Shuaihu Jiang; Shan Chen; Yanan Yu; Shujuan Bao; Maowen Xu; Qin Yue; Hongliang Xin; Yijin Kang

doi:10.1021/acsami.0c08202

Nanoporous V-Doped Ni₅P₄ Microsphere: A Highly Efficient Electrocatalyst for Hydrogen Evolution Reaction at All pH

ACS Appl Mater Interfaces. 2020 Aug 19;12(33):37092-37099. doi: 10.1021/acsami.0c08202. Epub 2020 Aug 7.

Authors

Yuan Rao¹, Siwen Wang², Ruya Zhang¹, Shuaihu Jiang¹, Shan Chen¹, Yanan Yu¹, Shujuan Bao³, Maowen Xu³, Qin Yue¹, Hongliang Xin², Yijin Kang¹

Affiliations

¹ Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China.
² Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States.
³ Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy, Southwest University, Chongqing 400715, China.

PMID: 32814405
DOI: 10.1021/acsami.0c08202

Abstract

Hydrogen economy is one of the most promising candidates to replace the current energy system on depleting fossil fuels. As a clean and sustainable way to produce hydrogen, electrocatalytic water splitting attracts ever-increasing interest from the research community. Although the wide application of platinum group metal (PGM) catalysts is limited because of the scarcity and high cost toward hydrogen evolution reaction (HER), the non-PGM electrocatalysts usually suffer from unsatisfactory activity and poor durability. In this work, we report an active and durable V-doped Ni₅P₄ electrocatalyst that can be used for all-pH HER. Particularly, V-Ni₅P₄ has an HER activity that is comparable to that of Pt in preferred alkaline media, with overpotentials as low as 13 mV and 295 mV at current densities of 10 and 1000 mA cm^-2, respectively. The low-cost V-Ni₅P₄ that enables ultrahigh current density (i.e., at the level of A cm^-2) would be of great interest to the hydrogen production industry.

Keywords: HER; Ni5P4; all-pH; non-PGM; vanadium doping.