Co(OH)_2/MWCNTs复合物的室温固相合成及其电容性能  

Solid-state synthesis of Co(OH)_2/MWCNTs composite at room temperature and capacitive performance thereof

作　　者：刘晓红[1] 龚良玉[1] 姚文红[1] 孔祥平[1] 

机构地区：[1]青岛农业大学化学与药学院,山东青岛266109

出　　处：《无机盐工业》2013年第2期56-59,共4页Inorganic Chemicals Industry

基　　金：山东省优秀中青年科学家科研奖励基金项目(BS2010NJ007)

摘　　要：采用室温固相反应法制备了Co(OH)2/MWCNTs复合物。借助XRD、FT-IR以及SEM对产物的晶形、组成及形貌进行了表征。结果表明,所得复合物中β-Co(OH)2颗粒较好地覆盖于MWCNTs的表面。电化学测试结果表明,复合物的比容量和循环性能均得到有效改善,MWCNTs的质量分数为10%时,充放电至200次时其比容量可达385 F/g并逐趋恒定,1 000次后其比容量增加了8%,达到415 F/g,表现出良好的循环稳定性。Co（OH）2/MWCNTs composite was prepared by room-temperature solid-state reaction method.The product＇s crystal shape, composition, and morphology were characterized by XRD, FT-IR, and SEM.Resuhs indicated that β-Co（OH）2 particles prepared by solid-state reaction were uniformly coated on multi-walled carbon nanotubes （MWCNTs）.Electrochemical tests showed that both the specific capacitance and cycle performance of the obtained composite were effectively improved. The specific capacitance became constant gradually and a high number of 385 F/g could be obtained for the Co（OH）2/MWCNTs composite with the MWCNTs mass fraction of 10% after 200 charge-discharge cycles.The capacitance increased by about 8% after 1 000 cycles, that was, 415 F/g could be achieved, showing its excellent cyclic stability.

关 键 词：室温固相反应法 CO(OH)2 MWCNTs复合物 电化学电容 

分 类 号：TQ138.12[化学工程—无机化工]