期刊
JOURNAL OF POWER SOURCES
卷 349, 期 -, 页码 68-74出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2017.03.028
关键词
Amorphous; Boron doping; Ni-Fe alloy; Nano-chains; Water oxidation
资金
- Australian Research Council [DP130102151]
- University of Queensland (UQ) International Postgraduate Scholarships
We report a novel magnetic field assisted chemical reduction method for the synthesis of boron-doped Ni/Fe nano-chains as promising catalysts for the oxygen evolution reaction (OER). The boron-doped Ni/Fe nano-chains were synthesised in a one step process at room temperature using NaBH4 as a reducing agent. The addition of boron reduced the magnetic moment of the intermediate synthesis products and produced nano-chains with a high specific surface area of 73.4 m(2) g(-1). The boron-doped Ni/Fe nano chains exhibited catalytic performance superior to state-of-the-art Ba0.5Sr0.5Co0.8Fe0.2O3-delta, perovskite and RuO2 noble metal oxide catalysts. The mass normalized activity of the boron-doped Ni/Fe nano chains measured at an overpotential of 0.35 V was 64.0 A g(-1), with a Tafel slope of only 40 mV dec(-1). The excellent performance of the boron-doped Ni/Fe nano-chains can be attributed to the uniform elemental distribution and highly amorphous structure of the B-doped nano-chains. These results provide new insights into the effect of doping transition-metal based OER catalysts with non-metallic elements. The study demonstrates a facile approach to prepare transition metal nano-chains using magnetic field assisted chemical reduction method as cheap and highly active catalysts for electrochemical water oxidation.(C) 2017 Elsevier B.V. All rights reserved.
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