Ultrafine high-entropy alloy nanoparticles for extremely superior electrocatalytic methanol oxidation

被引：4
|
作者：
Jin, Yu [1 ]
Li, Ruojing [2 ]
Zhang, Xiaodong [1 ]
Cao, Kesheng [1 ]
Liao, Binghua [1 ]
Luo, Xiaoqiang [1 ]
Li, Yanling [1 ]
Ma, Wei [1 ]
机构：
[1] Pingdingshan Univ, Sch Chem & Environm Engn, Pingdingshan 467000, Peoples R China
[2] Pingdingshan Univ, Sch Art & Design, Pingdingshan 467000, Peoples R China
来源：
MATERIALS LETTERS | 2023年 / 344卷
基金：
中国国家自然科学基金;
关键词：
Platinum; Ultrafine high-entropy alloy; Nanoparticles; Nanocomposites; Metals and alloys; Methanol oxidation;
D O I：
10.1016/j.matlet.2023.134421
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To develop highly efficient catalysts with low Pt content for electrocatalytic methanol oxidation reaction (MOR) is meaningful yet still challenged. Here, PtPdCdZnCo ultrafine high-entropy alloy (uf-HEA) nanoparticles (similar to 2.6 nm) were achieved by a facile one-pot chemical synthesis. As MOR catalyst, the uf-HEA displays ultrahigh mass activity of 2.86 and 11.1 A mg(Pt)(-1) in acidic and alkaline environments, respectively. That is the best acidic MOR catalyst so far by comparing with other reported Pt-based catalysts. Study suggests the outstanding MOR activity is attributed to the weakened reaction intermediates adsorption on uf-HEA surface.
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页数：4
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