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- Title
Heterogeneous Fe‐Doped Ni(OH)<sub>2</sub> Grown on Nickel Mesh by Electrodeposition for Efficient Alkaline Oxygen Evolution Reaction.
- Authors
Mao, Fangxin; Zhang, Junshan; Wang, Hai Feng; Liu, Peng Fei; Yang, Hua Gui
- Abstract
Designing highly excellent and stable catalysts for alkaline oxygen evolution reaction (OER) is gradually pivotal for clean energy development. In this work, a heterogeneous Fe‐doped Ni(OH)2 (Ni/Fe‐0.1) was developed via simple one‐step electrodeposition onto nickel mesh. The heterogeneous interface structure generates sufficient active sites, significantly improving OER performance with an overpotential of 174 mV at 10 mA cm−2 (η10), while Tafel slope is only 43.0 mV dec−1. In particular, Ni/Fe‐0.1 is still able to operate stably at a current density of 1 A cm−2 for 100 h without obvious potential decay. The oxidation of Ni2+ to Ni3+ was detected by X‐ray photoelectron spectroscopy, proving that the heterogeneous catalyst could stabilize the high‐valence state of nickel as active sites to its superior OER performance. This work provides a convenient synthetic strategy for forming heterogeneous catalysts toward efficient water electrolysis.
- Subjects
DOPING agents (Chemistry); ELECTROPLATING; OXYGEN evolution reactions; WATER electrolysis; HETEROGENEOUS catalysts; X-ray photoelectron spectroscopy
- Publication
Chemistry - A European Journal, 2023, Vol 29, Issue 69, p1
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.202302055