水热法制备MnO_2的电容特性  

The capacitive characteristics of MnO_2 synthesized by hydrothermal method

作　　者：赵家昌[1] 史博文[1] 郑静[1] 徐菁利[1] 

机构地区：[1]上海工程技术大学化学化工学院,上海201620

出　　处：《化工新型材料》2008年第10期72-74,共3页New Chemical Materials

基　　金：上海市高等学校教育高地建设项目;上海高校选拔培养优秀青年教师科研专项基金(06XPYQ16)

摘　　要：采用水热法制备了超级电容器MnO2电极材料,以单因素实验确定了最佳的制备条件为:水热处理温度为120℃和反应时间为6h。XRD测试结果表明,所制得的MnO2是α-MnO2和γ-MnO2的混合晶型。最佳制备条件下所制得的MnO2的比电容达168.39F.g-1。为改善MnO2的倍率特性进行Al掺杂,XRD的测试结果表明,Al3+进入到MnO2的晶格中。电化学测试结果表明,掺Al改善了电极材料的倍率特性和循环稳定性。The MnO2 electrode material for supercapacitor was synthesized by hydrothermal method and the optimum preparation condition was determined by monofactorial study, which is confirmed to be 120℃ for treatment tempera ture and 6h for treatment time. XRD characterization showed that the MnO2 prepared was composed of α-MnO2 and 7 MnO2. And the specific capacitance of the MnO2 developed under appropriate preparation condition was found to be 168.39 F·g ^-1 Al-doping was performed for the sake of the improvement of rate capability. And the results showed that both the rate capability and the cycling stability of MnO2 were improved.

关 键 词：超级电容器 水热法 掺杂 电容特性 

分 类 号：TM53[电气工程—电器]