双金属片
硼氢化
钝化
催化作用
金属
贵金属
纳米颗粒
氧化态
无机化学
材料科学
化学工程
化学
纳米技术
冶金
有机化学
工程类
图层(电子)
作者
Evgeniia A. Vorms,E. A. Suprun,Anna V. Nartova,Ren I. Kvon,Alexandr G. Oshchepkov
标识
DOI:10.1016/j.electacta.2022.141196
摘要
Development cost-effective and stable electrocatalysts for the borohydride oxidation reaction (BOR) is mandatory for the deployment of the direct borohydride fuel cells (DBFC). Ni electrocatalysts have recently been shown to outperform noble-metal (Pt, Pd, Au) catalysts at low BOR overpotentials, but their activity largely depends on the state of the Ni surface with metallic Ni demonstrating the highest activity. Here, bimetallic NiCu nanoparticles of different compositions were prepared, which demonstrate high BOR activity comparable to Ni nanoparticles in the metallic state of their surface and allow to overcome in considerable extent the negative issues related to inevitable surface passivation.
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