Urchin-like CoP Nanocrystals as Hydrogen Evolution Reaction and Oxygen Reduction Reaction Dual-Electrocatalyst with Superior Stability

CORC > 苏州纳米技术与纳米仿生研究所 > 中国科学院苏州纳米技术与纳米仿生研究所 > 纳米生物医学与安全研究部 > 王强斌团队

	Urchin-like CoP Nanocrystals as Hydrogen Evolution Reaction and Oxygen Reduction Reaction Dual-Electrocatalyst with Superior Stability
	Yang, HC(杨红超); Zhang, YJ(张叶俊); Hu, F(胡峰); Wang, QB(王强斌)
刊名	NANO LETTERS
	2015
卷号	15 期号:11 页码:5
关键词	Cobalt phosphide hydrogen evolution reaction oxygen reduction reaction electrocatalyst durability
通讯作者	Wang, QB (王强斌)
英文摘要	High-performance electrocatalysts with superior stability are critically important for their practical applications in hydrogen evolution reaction (HER) and Oxygen reduction reaction (ORR). Herein, we report a facile method to fabricate urchin like CoP nanocrystals (NCs) as E catalyst for both HER and ORR with desirable electrocatalytic activities and long-term stability. The urchin-like CoP NCs with a diameter of 5 mu m were successfully prepared by a hydrothermal reaction following a phosphidation treatment in N-2 atmosphere and present excellent HER catalytic performance with a low onset overpotential of SO mV) a small Tafel slope of 46 mV/decade, and an exceptional low overpotential of similar to 180 mV at a current density of 100 mA cm(-2) with a mass loading density of 0.28 mg/cm(2). Meanwhile, a remarkable ORR catalytic activity was observed with a half-potential of 0.7 V and an onset potential of 0.8 V at 1600 rpm and a scan rate of 5 mV s(-1). More importantly, the urchin-like CoP NCs present superior stability and keep their catalytic activity for at least 10 000 CV cycles for HER in 0.5 M H2SO4 and over 30 000 s for ORR in 0.1 M KOH, which is ascribed to their robust three-dimensional structure. This urchin-like CoP NCs might be a promising replacement to the Pt-based electrocatalysts in water splitting and fuel cells.
收录类别	SCI
语种	英语
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.sinano.ac.cn/handle/332007/3278]
专题	苏州纳米技术与纳米仿生研究所_纳米生物医学与安全研究部_王强斌团队
推荐引用方式 GB/T 7714	Yang, HC,Zhang, YJ,Hu, F,et al. Urchin-like CoP Nanocrystals as Hydrogen Evolution Reaction and Oxygen Reduction Reaction Dual-Electrocatalyst with Superior Stability[J]. NANO LETTERS,2015,15(11):5.
APA	Yang, HC,Zhang, YJ,Hu, F,&Wang, QB.(2015).Urchin-like CoP Nanocrystals as Hydrogen Evolution Reaction and Oxygen Reduction Reaction Dual-Electrocatalyst with Superior Stability.NANO LETTERS,15(11),5.
MLA	Yang, HC,et al."Urchin-like CoP Nanocrystals as Hydrogen Evolution Reaction and Oxygen Reduction Reaction Dual-Electrocatalyst with Superior Stability".NANO LETTERS 15.11(2015):5.