Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 47, Issue 66, Pages 28495-28504Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2022.06.194
Keywords
Bristlegrass-like; Co doped Ni2P; Bifunctional; Seawater splitting
Categories
Funding
- Anhui province natural science foundation project [KJ2020A0280]
- National Sci- ence Foundation of China [21771002]
- Key Research and Development Program of Anhui province [202104d070 20013]
- University Synergy Innovation Program of Anhui Province [GXXT- 2019-028]
- launching scientific research funds for doctors of Anhui University of Science and Technology [11109]
- Open Project of State Key Laboratory of Environment -friendly Energy Materials [19kfhg10]
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Seawater, as the most abundant resource on earth, requires the development of efficient electrocatalysts for seawater splitting. This study presents the synthesis of a unique morphological Co-Ni2P composite with excellent electrocatalytic activity and stability.
Seawater is the most abundant resource on earth, so developing cost-effective, highly durable corrosion resistance and efficient electrocatalysts are crucial to enhance seawater splitting. Herein, we prepared 3D bristlegrass-like Co-doped Ni2P (Co-Ni2P) composites supported on Ni foam (NF) through a facile solvothermal method combined and a subsequent phosphatization treatment. Benefiting from the unique structure, Co-Ni2P shows excellent electrocatalytic activity as an electrode material for both the hydrogen evolution reaction (HER, low overpotential of 116 mV at 50 mA cm(-2)) and oxygen evolution reaction (OER, low overpotential of 266 mV at 50 mA cm(-2)). Moreover, the as-prepared Co-Ni2P composites exhibit excellent stability and corrosion resistance in an alkaline medium. Density functional theory (DFT) calculations were employed to evaluate the H* adsorption of Co-Ni2P, and the results proved the high catalytic activity for the HER. This study pro-vides new materials with a unique morphology for overall water splitting. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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