期刊
RARE METALS
卷 41, 期 1, 页码 125-131出版社
NONFERROUS METALS SOC CHINA
DOI: 10.1007/s12598-021-01760-x
关键词
High entropy alloys; Gas atomization; Acidic etching; Nanoporous AlCrFeNiCu structures; Oxygen evolution reaction
资金
- National Natural Science Foundation of China [51771132]
This research presents a facile approach to synthesize large-scale nanoporous HEAs particles and evaluates their performance in the oxygen evolution reaction. The HEAs exhibit excellent catalytic performance comparable to RuO2, inspiring their industrial applications as catalysts.
High entropy alloys (HEAs) containing five or more equimolar components have shown promising catalytic performance due to their unique chemical and mechanical properties. However, it is still challenging to prepare scalable and efficient nanoporous HEAs as catalysts. Here, we present a facile strategy to synthesize large-scale nanoporous HEAs particles by combing vacuum induction melting, gas atomization, and acidic etching procedure. The application of HEAs to energy conversion is evaluated with electrocatalytic oxygen evolution reaction (OER) on AlCrCuFeNi HEAs. The HEAs exhibit a low OER overpotential of 270 mV to achieve a current density of 10 mA.cm(-2), a small Tafel slope of 77.5 mV.dec(-1), and long-term stability for over 35 h in 1 mol.L-1 KOH, which is comparable to the state-of-the-art OER electrocatalyst RuO2. The findings in this paper not only provide an industrial approach to produce nanoporous HEAs powder but also inspire the applications of HEAs as catalysts.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据