期刊
ELECTROCHIMICA ACTA
卷 264, 期 -, 页码 225-232出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.01.136
关键词
Synergistic effects; Nano interface; Bifunctional electrocatalyst; Oxygen evolution; Hydrogen evolution
资金
- National Natural Science Foundation of China [21603157, 51402202]
- Natural Science Foundation of Jiangsu Province [BK20150311, BK20140315]
- College Natural Science Foundation of Jiangsu Province [16KJB430025]
- Postdoctoral Science Foundation of China [2016T90488, 2015M580459]
- Suzhou Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies
As a promising strategy for clean energy production, electrochemical water splitting requires high-efficient, well-stable, and earth-abundant electrocatalysts to realize its practical application. Herein, we report a heterogeneous Fe3O4-blended Ni/NiO composite fabricated through a salt-template method as highly active bifunctional catalysts for both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). To reach a current density of 10 mA cm(-2), the Ni/NiO/Fe3O4 requires low overpotential of 258 mV for OER in alkaline media and 206 mV for HER in acidic media, respectively, much lower than those of Ni/NiO, Fe3O4 and other Ni-based oxides. The excellent electrocatalytic performance can be ascribed to the enhanced charge-transfer kinetics between Ni and Fe sites and improved active sites resulted from the large nano-interface between Ni compounds and Fe3O4. This work provides a new method to design high-performance non-noble metal Ni-based electrocatalysts by incorporating Fe-doping and nano-interface-fabrication together, which can also be applied to develop other novel hybrid electrocatalysts for practical application. (c) 2018 Elsevier Ltd. 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