吴慕遥
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影响因子：5.9
DOI码：10.1021/acsanm.3c03630
发表刊物：ACS Applied Nano Materials
关键字：magnetic field-assisted electrodeposition, catalytic electrode, oxygen evolution reaction, hydrogen evolution reaction, overall water splitting
摘要：Hydrogen energy is gaining widespread attention as a green energy source. However, the existing catalysts have high overpotential and kinetic reaction energy barriers, which have seriously affected the catalytic efficiency of hydrogen production from overall water splitting, and the existing metal catalysts cannot be used on a large scale because of scarce resources and high costs. Therefore, it is an urgent need to find an excellent stable transition, low-cost, and high-activity metal-based bifunctional catalyst. In this work, a method is proposed to prepare Ni/Fe3O4 catalytic electrodes by modulating the magnetic field to guide the adsorption of magnetic nanoparticles Fe3O4 on the catalytic electrode surface. It was found that in the case of the added 5 g/L Fe3O4 magnetic nanoparticles coupled with a single magnetic field, the catalytic electrode was measured in an alkaline solution, and the overpotentials of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) reactions reached 143 and 262 mV at the current density of 10 mA cm−2, with Tafel slopes of 39 and 40 mV dec−1, respectively. Compared to existing transition metal catalytic electrodes, the Ni/Fe3O4 catalytic electrode presents an outstanding catalytic performance in both HER and OER. Moreover, this work demonstrates that superior bifunctional catalytic electrodes with micro/nanostructures can be prepared by regulating different magnetic fields to guide the deposition of magnetic nanoparticles Fe3O4, which provides theoretical evidence for the preparation of future bifunctional catalytic electrodes.
备注：中科院2区
合写作者：Yuqing Wang,Yuanlong Chen,Muyao Wu
第一作者：Fankai Zhu
论文类型：期刊论文
通讯作者：Wei Jiang
学科门类：工学
文献类型：J
卷号：6
页面范围：19837−19847
ISSN号：2574-0970
是否译文：否
发表时间：2023-10-19
收录刊物：SCI、EI
