CoP纳米片制备及其电催化产氢性能的研究  

Synthesis of CoP Nanosheets and Its Application as Electrocatalysts for Efficient Hydrogen Evolution

作　　者：刁金香[1] 邱雨 郭晓辉[2] DIAO Jin-xiang;QIU Yu;GUO Xiao-hui(Department of Aeronautical Engineering,Aeronautical Polytechnic Institute,Xi＇an 710089,China;Key Laboratory of Synthetic and Natural Functional Molecule Chemistry（Ministry of Education,China）,College of Chemistry and Materials Science,Northwest University,Xi＇an 710069,China)

机构地区：[1]西安航空职业技术学院航空材料工程学院,西安710089 [2]西北大学化学与材料科学学院,合成与天然功能分子化学教育部重点实验室,西安710069

出　　处：《人工晶体学报》2018年第6期1148-1151,1162,共5页Journal of Synthetic Crystals

基　　金：国家科学自然基金(21301140)

摘　　要：高稳定性的催化剂对于规模化电催化产氢起着关键的作用。因此,采用简单的方法合成CoP纳米片,其表现出优越电催化活性和稳定性。CoP纳米片采用水热法和在氩气中磷化法制备的,纳米片的厚度为100~300 nm。CoP纳米片在0.5 M H_2SO_4的电解质中,表现出良好的电化学产氢性能,起始过电为~75 m V,塔菲尔斜率为~39.67 m V/decade,当电流密度为10 m A·cm-2,过电压为~125 m V,经过1000次的循环后,保持良好的稳定性能。High-performance electrocatalysts with superior stability are critically important for their practical application in hydrogen evolution reaction. Herein,a facile method to fabricate CoP nanosheets as catalyst for HER with desirable electrcatalystic activity and long-term stability. The CoP nanosheets with thickness of 100-300 nm were successfully prepared by a hydrothermal method following a phosphidation treatment in Ar atmosphere and presented excellent HER catalytic performance with low onset overpotential of-75 m V,a small tafel slope of-39. 67 m V/decade,an exceptional low overpotential of-125 m V at a current density of 10 m A·cm-2. The CoP nanosheets show superior stability and keep their catalystic activity for at least 1000 CV cycles.

关 键 词：CoP纳米片 析氢反应 电催化剂 稳定性 

分 类 号：O643.36[理学—物理化学] TQ116.14[理学—化学]