5-磺基水杨酸辅助水热法制备Co-Ni层状双氢氧化物及其超电容性能  

5-Sulfosalicylic Acid-Assisted Hydrothermal Synthesis and Supercapacitive Properties of Co-Ni Layered Double Hydroxides

作　　者：张方[1] 原长洲[2] 张校刚[1] 章罗江[1] 徐科[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,南京210016 [2]安徽工业大学材料科学与工程学院,安徽马鞍山243002

出　　处：《物理化学学报》2010年第12期3175-3180,共6页Acta Physico-Chimica Sinica

基　　金：国家重点基础研究发展计划项目(973)(2007CB209703);国家自然科学基金(20633040;20873064)资助~~

摘　　要：采用5-磺基水杨酸(SSA)辅助水热法制备了Co-Ni层状双氢氧化物(CoxNi1-xLDHs),通过X射线衍射(XRD)、傅里叶变换红外(FT-IR)光谱、场发射扫描电镜(FE-SEM)和透射电镜(TEM)研究其结构与形貌.结果表明,通过调控反应体系中Co、Ni的配比,可以得到不同形貌的CoxNi1-xLDHs.在Co的摩尔分数为0.24时,形成了由纳米片组装的花瓣状纳米球.循环伏安和恒流充放电测试表明,这种花瓣状结构的双氢氧化物在1A·g-1电流密度下,比电容值达到1735F·g-1.Co-Ni layered double hydroxides （CoxNi1-x LDHs） were successfully synthesized by a 5- sulfosalicylic acid （SSA）-assisted hydrothermal process. Structural and morphological characterizations were performed using powder X-ray diffraction （XRD）, Fourier transform infrared （FT-IR） spectroscopy, field emission scanning electron microscopy （FE-SEM）, and transmission electron microscopy （TEM）. The results reveal that different morphologies of CoxNi1-x LDHs could be obtained by tuning the Co/Ni molar ratio. The CoxNi1-x LDHs exhibit petal-like nanospheres that are composed of nanoflakes at a Co molar fraction of 0.24. The LDH of this structure has a specific capacitance of 1735 F·g-1 at a current density of 1 A·g-1 as determined by cyclic voltammetry and galvanostatic charge-discharge.

关 键 词：超级电容器 层状双氢氧化物 5-磺基水杨酸 水热法 

分 类 号：TM53[电气工程—电器]