CoNi-LDH@BP复合材料的制备及电催化析氢性能研究  

Study on preparation and electrocatalytic performance of CoNi-LDH@BP composite material for hydrogen evolution

作　　者：常茜 郭军[1] 张丹[1] Chang Xi;Guo Jun;Zhang Dan(School of Chemistry and Materials Science,Guizhou Normal University,State Key Laboratory and Postdoctoral Workstation for Efficient Utilization of Medium and Low Grade Phosphate Rock and Its Associated Resources,Wengfu(Group)Co.,Ltd.,Guiyang 550001)

机构地区：[1]贵州师范大学化学与材料科学学院瓮福(集团)有限责任公司中低品位磷矿及其共伴生资源高效利用国家重点实验室·博士后工作站,贵阳550001

出　　处：《化工新型材料》2022年第5期131-136,共6页New Chemical Materials

基　　金：国家自然科学基金(21862005);贵州省科技厅计划(黔科合LH字[2017]7336);黔合基础[2019]1457;黔科合支撑[2019]2835;黔科合平台人才([2018]5769);贵州省教育厅青年科技人才成长(黔教合KY字[2018]126);中低品位磷矿及其共伴生资源高效利用国家重点实验室开放课题(WFKF2017-03)资助项目。

摘　　要：采用超声辅助液相剥离法制备了薄层黑磷烯(BP),经溶剂热处理一步合成了CoNi-LDH@BP。利用XRD、SEM、TEM和XPS等对材料的形貌结构进行表征,并测试了电化学析氢性能。结果表明,CoNi-LDH@BP形貌呈三维微球,表面分布着针状纳米棒,BP以片状被CoNi-LDH包裹在内部。在1.0mol/L KOH电解液中,达到10mA/cm^(2)电流密度所需的析氢过电位为153mV,塔菲尔斜率为60mV/dec。另外,CoNi-LDH@BP催化剂还表现出较低的电荷传递阻力和较好的稳定性,表明该催化剂在碱性介质中具有优良的电化学析氢性能。The thin-layer black phosphorene(BP)was prepared by the ultrasonic-assisted liquid phase stripping method,and synthesized CoNi-LDH@BP in one step by solvent heat treatment.The morphology and structure of the material were characterized by XRD,SEM,TEM and XPS,and tested the electrochemical hydrogen evolution performance.The results shown that the CoNi-LDH@BP had three-dimensional microsphere with needle-like nanorods distributed on the surface,and the BP was covered by CoNi-LDH in the form of flakes.In 1.0 M KOH electrolyte,the hydrogen evolution overpotential required to reach the current density of 10 mA·cm^(2) was 153 mV,and the Tafel slope was 60 mV·dec;.In addition,the catalyst also had low charge transfer resistance and good stability,indicating that the catalyst had excellent electrochemical hydrogen evolution performance in alkaline media.

关 键 词：双金属氢氧化物 黑磷烯 电催化剂 析氢反应 

分 类 号：TQ116.21[化学工程—无机化工]