Zr-doped porous Ni<sub>2</sub>P nanoarray as a highly efficient electrocatalyst for hydrogen evolution reaction in alkaline seawater
The utilization of seawater electrolysis is recognized as a promising method for generating hydrogen as a substitute for conventional technology. Herein, the electrodes were fabricated by<i>in-situ</i>growth of Zr-Ni<sub>2</sub>P arrays on a nickel foam substrate (Zr-Ni<sub>2</sub>P/NF) through a low-temperature hydrothermal and phosphating process. The Zr-Ni<sub>2</sub>P/NF can achieve efficient hydrogen evolution reaction (HER) performance in alkaline seawater electrolyte. This Zr-Ni<sub>2</sub>P/NF shows overpotentials as low as 197 and 274 mV at 100 and 500 mA cm<sup>-2</sup>for HER in alkaline seawater, respectively. Moreover, it exhibits strong stability for at least 50 h of electrolysis at a current density of 500 mA cm<sup>-2</sup>in alkaline seawater with the overpotential attenuation of 38 mV. The excellent performance and hierarchical structure advantages of Zr-Ni<sub>2</sub>P/NF provide new ideas for designing efficient seawater splitting electrocatalysts.
Authors
- Xuping Sun (ORCID: https://orcid.org/0000-0001-5034-1135)
- Yingchun Yang (ORCID: https://orcid.org/0000-0002-5582-7836)
- Xuefeng Zhang (ORCID: https://orcid.org/0000-0003-3068-7854)
- Wenjing Tang (ORCID: https://orcid.org/0000-0002-2156-9795)
Institutions
- Sichuan University (CN)
- Chengdu University of Information Technology (CN)
- Shandong Normal University (CN)
- Chengdu University of Technology (CN)
- West China Hospital of Sichuan University (CN)
- Chengdu University (CN)
Publication Details
- Journal
- Nanotechnology
- Published
- 2025-04-14
- DOI
- https://doi.org/10.1088/1361-6528/adcc36
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.00