Co@CNTs的制备及性能表征  

Preparation and Properties Characterization of Cobalt and Carbon Nanotubes Composite

作　　者：韩燕[1] 王一菁[1] 宋大卫[1] 王亚平[1] 焦丽芳[1] 袁华堂[1] 

机构地区：[1]南开大学新能源材料化学研究所,教育部先进能源材料化学重点实验室,天津300071

出　　处：《南开大学学报（自然科学版）》2010年第6期1-4,共4页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金(50631020,50701025,50971071);国家863计划项目(2007AA05Z149,2007AA05Z108);国家973计划项目(2010CB631303);教育部创新团队支持项目(IRT-0927)

摘　　要：采用球磨处理增加碳纳米管的结构缺陷,提高其反应活性,并以简单水热法合成了Co@CNTs复合物.用XRD、SEM、TEM对其结构和形貌进行了表征.结果显示,球磨处理后CNTs长度变短,复合物中CNTs与Co分布均匀,Co为纳米颗粒且有部分生长在CNTs表面.电化学性能测试结果表明,Co@CNTs电极比Co电极具有更高的放电容量、更好的循环稳定性及抗腐蚀性能.Cobalt and carbon nanotubes composite（Co@CNTs） was synthesized through a facile hydrothermal route.The CNTs was pretreated by ball milling to increase structural defects and improve reactivitiy.XRD,SEM and TEM characterizations reveal that CNTs are destroyed to form short tubes.Co and CNTs are evenly distributed and some of the Co nanoparticals grow on the surface of CNTs.A series of electrochemical measurements show that,compared with the pure Co electrodes,the Co@CNTs electrodes possess higher discharge capacity, better cycle performance and anticorrosion behavior.

关 键 词：CO 碳纳米管 球磨 水热 电化学性能 

分 类 号：O614[理学—无机化学]