Cu–Co–P electrodeposited on carbon paper as an efficient electrocatalyst for hydrogen evolution reaction in anion exchange membrane water electrolyzers
- Authors
- Guo, W.; Kim, J.; Kim, H.; Ahn, S.H.
- Issue Date
- 3-Jun-2021
- Publisher
- Elsevier Ltd
- Keywords
- Anion exchange membrane water electrolyzer; Cu–Co–P catalyst; Electrodeposition; Hydrogen evolution reaction
- Citation
- International Journal of Hydrogen Energy, v.46, no.38, pp 19789 - 19801
- Pages
- 13
- Journal Title
- International Journal of Hydrogen Energy
- Volume
- 46
- Number
- 38
- Start Page
- 19789
- End Page
- 19801
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/50524
- DOI
- 10.1016/j.ijhydene.2021.03.120
- ISSN
- 0360-3199
1879-3487
- Abstract
- To solve the issues of energy shortage and environmental pollution, it is essential to develop highly effective catalysts for hydrogen evolution reaction (HER) in water electrolysis. Herein, we report a facile and rapid fabrication of a Cu–Co–P catalyst on a carbon paper (CP) substrate using electrodeposition. First, the deposition conditions for Co–P/CP were optimized. The prepared Co–P consisted of numerous spheres and exhibited acceptable catalytic activity towards HER in an alkaline medium with an overpotential of 72 mV at current density of −10 mA/cm2. Further performance enhancement was achieved by the incorporation of Cu to modify the electronic structure of the Co–P catalyst. In a half-cell test, the optimized Cu–Co–P/CP exhibits remarkable performance, achieving −10 mA/cm2 at an overpotential of 59 mV, and the Tafel slope is 38 mV/dec. In a single-cell test, an anion exchange membrane water electrolyzer with a Cu–Co–P/CP cathode and commercial IrO2/CP anode exhibited high current density of 0.70 A/cm2 at 1.9 Vcell. © 2021 Hydrogen Energy Publications LLC
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