NiCo-LDH电极材料的合成及其超级电容性能综合实验设计  

Design on comprehensive experiment of NiCo-LDH electrode material synthesis and supercapacitor performance

作　　者：陈学敏 何明立 于涛[1] 李发堂[1] CHEN Xuemin;HE Mingli;YU Tao;LI Fatang(College of Science,Hebei University of Science and Technology,Shijiazhuang 050018,China)

机构地区：[1]河北科技大学理学院,河北石家庄050018

出　　处：《实验技术与管理》2020年第9期179-182,共4页Experimental Technology and Management

基　　金：国家自然科学基金项目(51802075);河北省自然科学基金项目(B2018208090);河北省高等学校青年拔尖人才项目(BJ2019002)。

摘　　要：本实验采用水热法及不同沉淀剂,在泡沫镍表面原位生长出不同形貌的镍钴层状双金属氢氧化物(NiCo-LDHs)电极材料,通过X射线衍射仪和扫描电子显微镜对样品进行物相及形貌表征,利用电化学工作站对电极材料的超级电容性能进行评价。实验结果表明,在其他反应条件相同情况下,以六亚甲基四胺(HMT)和尿素作为沉淀剂,所得产物形貌分别为纳米片和纳米线,而NiCo-LDH纳米片的超级电容性能优于纳米线。该实验设计简单,涵盖纳米材料合成、表征及电化学性能评价等诸多知识点,有助于学生理解纳米材料形貌与性能间的关系,提升学生的科研意识和综合实践能力。The NiCo-LDH electrode materials with different morphologies on foamed nickel are successfully synthesized by changing the precipitant through hydrothermal method. The X-ray diffraction and scanning electron microscopy are used to characterize phases and morphologies of the product. The supercapacitor performance of the NiCo-LDH electrode materials is evaluated with electrochemical workstation. The results show that the NiCo-LDH nanosheets and nanowires are acquired when hexamethylenetetramine and urea are used as precipitants respectively and the supercapacitor performance of Ni Co-LDH nanosheets is better than that of nanowires. The experimental design is simple and covers some knowledge points such as the synthesis and characterization of nanomaterials and the evaluation of electrochemical performance. It is helpful for students to understand the relationship between the morphologies and properties of nanomaterials and improve their scientific research consciousness and comprehensive ability.

关 键 词：层状双金属氢氧化物 NiCo-LDH 纳米材料 超级电容器 综合实验 

分 类 号：TB321[一般工业技术—材料科学与工程] G642.423[文化科学—高等教育学]