氮掺杂超薄碳纳米片复合铂钌单原子合金催化剂的电化学析氢性能  

Nitrogen Doped Ultra-thin Carbon Nanosheet Composited Platinum-ruthenium Single Atom Alloy Catalyst for Promoting Electrochemical Hydrogen Evolution Process

作　　者：范建玲[1] 唐灏 秦凤娟 许文静 谷鸿飞 裴加景 陈文星 FAN Jianling;TANG Hao;QIN Fengjuan;XU Wenjing;GU Hongfei;PEI Jiajing;CEHN Wenxing(Department of Physics and Engineering Technology,Guilin Normal College,Guilin 541199,China;Energy&Catalysis Center,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China;State Key Lab of Organic-Inorganic Composites,Beijing Advanced Innovation Center for Soft Matter Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]桂林师范高等专科学校物理与工程技术系,桂林541199 [2]北京理工大学材料学院,能源与催化中心,北京100081 [3]北京化工大学有机无机复合材料国家重点实验室,软物质科学与工程北京市先进创新中心,北京100029

出　　处：《高等学校化学学报》2022年第9期180-187,共8页Chemical Journal of Chinese Universities

基　　金：北京自然科学基金(批准号:2212018)资助。

摘　　要：为了减少贵金属的用量,降低成本,提高大规模生产的可能性,构建单原子合金(SAA)是一个非常可行的解决方案.设计了一种超小PtRu单原子合金物种均匀分散在掺氮超薄碳纳米片上的电催化剂(PtRu SAA/NC),并通过基于同步辐射的X射线吸收精细结构(XAFS)光谱进行了结构确认.与纯Ru团簇和氮掺杂的碳片相比,PtRu SAA/NC具有更高的析氢反应(HER)催化活性和特殊的稳定性,在0.5 mol/L H_(2)SO_(4)溶液中进行HER时,表现出较小的Tafel斜率(43 mV/dec),且在10 mA/cm^(2)电流密度下过电位仅为54 mV.In order to reduce the amount of precious metals,reduce costs and increase the possibility of large-scale production,the construction of single atom alloy(SAA)is a very feasible solution.Herein,an electrocatalyst with ultra-small PtRu single atom alloy species evenly dispersed on nitrogen doped ultra-thin carbon nanosheets(PtRu SAA/NC)was designed,and its structure was confirmed by synchrotron-radiation-based X-ray absorption fine structure(XAFS)spectroscopy.Compared with pure Ru clusters and nitrogen doped carbon sheets,the PtRu SAA/NC possesses higher hydrogen evolution reaction(HER)catalytic activity and exceptional stability,which exhibits a small Tafel slope of 43 mV/dec and a low overpotential of 54 m V at 10 m A/cm^(2) during HER in 0.5 mol/L H_(2)SO_(4)solution.The design of this low-cost and high-efficiency single atom alloy catalyst provides a new research direction for the development of clean energy structure conversion.

关 键 词：单原子合金催化剂 氮掺杂超薄碳纳米片 电化学析氢反应 电催化剂 

分 类 号：O646[理学—物理化学]