高面积电容柔性储能电极材料的制备与性能  

Preparation and performance of flexible energy storage electrode materials with high areal capacitance

作　　者：孙佳锋 金振东 金哲海 赵亚萍[1] 蔡再生[1] SUN Jiafeng;JIN Zhendong;JIN Zhehai;ZHAO Yaping;CAI Zaisheng(Key Laboratory of Eco-Textile Ministry of Education,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学生态纺织教育部重点实验室,上海201620

出　　处：《功能材料》2022年第12期12208-12214,共7页Journal of Functional Materials

基　　金：国家自然科学基金项目(51303022,22176031);中央高校基础研究基金项目(2232015D3-17);上海市教委产学研项目(助推计划)(15cxy55)。

摘　　要：采用超声辅助浸渍-烘干、化学沉积与阳极氧化方法制备了由棉织物(CF)、多壁碳纳米管(MCNT)和核壳结构镍@氢氧化镍(Ni@Ni(OH)_(2))构成的多级结构复合电极材料(CF-MCNT/Ni@Ni(OH)_(2)),并利用扫描电子显微镜、X射线衍射分析、电化学测试等手段对其结构与性能表征。结果表明,该电极在2 mol/L KOH溶液中0.5 mA/cm^(2)电流密度下面积比电容可达6300 mF/cm^(2)(3 mA/cm^(2)时为4927 mF/cm^(2)),与CF-Ni@Ni(OH)_(2)相比具有较大提高,同时充放电循环性能也有提升。MCNT的引入有利于CF表面形成粗糙导电膜,为优化电极结构以制备具有高性能储能器件提供了借鉴。A composite electrode material(CF-MCNT/Ni@Ni(OH)_(2))with hierarchical structure composed of cotton fabric(CF),multi-walled carbon nanotubes(MCNT)and core-shell structured nickel@nickel hydroxide(Ni@Ni(OH)_(2))was prepared by ultrasound-assisted impregnation-drying,chemical deposition and anodic oxidation.The structure and properties were characterized by means of scanning electron microscopy,X-ray diffraction analysis and electrochemical tests.The results show that the area specific capacitance of the electrode can reach 6300 mF/cm^(2)(4927 mF/cm^(2)at 3 mA/cm^(2))at a current density of 0.5 mA/cm^(2)in 2 mol/L KOH solution,which is higher than that of CF-Ni@Ni(OH)_(2),and the charge/discharge cycle performance has also been improved.The introduction of MCNT facilitates the formation of rough conductive layers on the surface of CF,which provides a reference for optimizing the electrode structure to prepare devices with high performance energy storage.

关 键 词：棉织物 氢氧化镍 碳纳米管 高面积比电容 超级电容器 

分 类 号：TM53[电气工程—电器] TB333[一般工业技术—材料科学与工程]