期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 3, 期 10, 页码 5337-5343出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta06458e
关键词
-
资金
- National Nature Science Foundation of China [51272094]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20123227110018]
- China Postdoctoral Science Foundation [2014M561578]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1401109C]
A novel composite with CoP nanoparticles uniformly deposited on reduced graphene oxide (RGO) sheets is prepared through a facile two-step approach. The as-prepared CoP/RGO composite is investigated as an electrocatalyst for the hydrogen evolution reaction (HER). It is found that the CoP/RGO composite shows an enhanced catalytic activity with a smaller Tafel slope (104.8 mV per decade), a much larger exchange current density (4.0 x 10(-5) A cm(-2)) and lower estimated HER activation energy (41.4 kJ mol(-1)) than pure CoP. Besides, the CoP/RGO composite exhibits good stability in acidic solution, the HER catalytic activity of which shows no obvious degradation after 500 cycles. Such enhanced catalytic activity stems from the abundance of active catalytic sites, the increased electrochemically accessible surface area and significantly improved electrochemical conductivity of the CoP/RGO composite. The good catalytic activity demonstrates that the CoP/RGO composite could be a promising electrocatalyst in hydrogen production.
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