OER properties of Ni–Co–CeO2/Ni composite electrode prepared by magnetically induced jet electrodeposition

过电位 塔菲尔方程 电解水 电解 贵金属 复合数 电极 制氢 析氧 催化作用 材料科学 化学工程 分解水 碱性水电解 冶金 无机化学 金属 复合材料 化学 电化学 物理化学 电解质 光催化 工程类 生物化学
作者
Wei Jiang,Huigui Li,Yuanlong Chen,Yue Wu,Junjie Li,Xu Wang,Xiaoqing Huang,Yuanxia Lao
出处
期刊:International Journal of Hydrogen Energy [Elsevier BV]
卷期号:48 (11): 4287-4299 被引量:28
标识
DOI:10.1016/j.ijhydene.2022.10.231
摘要

Hydrogen production from water electrolysis with catalysts is a simple, effective, and environmentally friendly way. However, the slow kinetics of the oxygen evolution reaction (OER) directly affects the catalytic efficiency of water electrolysis during hydrogen production. While the high cost of noble metal catalysts limits their engineering applications. Therefore, there is an urgent need to develop an economical and abundant catalyst with efficient OER performance to replace noble metal catalysts to reduce costs. In this work, we propose a method for the preparation of composite catalytic electrodes by magnetically induced jet electrodeposition. Ni–Co–CeO2/Ni composite electrodes with a unique micro-nano structure and a large specific surface area were rapidly obtained through magnetically induced adsorption of nano-mixed particles. It was found that the Ni–Co–CeO2/Ni composite electrode deposited by magnetically induced electrodeposition exhibited a lower overpotential of 301 [email protected] mA/cm2 when the nano-mixed particle concentration was 2 g/L, and the corresponding Tafel slope was as low as 43.72 mV/dec. The key parameters of overpotential and Tafel slope reach or even outperform the best noble metal electrode in the industry, indicating that the Ni–Co–CeO2/Ni composite electrode had excellent OER catalytic performance. The study demonstrates that magnetically induced jet electrodeposition provides a new method for the preparation of catalytic electrodes, which has important applications in the electrolysis of water for hydrogen production.
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