Electrochemical properties of Bismuth Doped a-MnO2 Nanorods for Supercapacitor Studies

摘要：

Bismuth doped α-MnO2 nanorods are synthesized by a simple hydrothermal method based on the redox reactions. The samples are characterized by X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). Electrochemical properties of the products are evaluated by cyclic voltammetry and galvanostatic charge-discharge measurements. In ours work, the pure MnO2 nanorods exhibits a relatively low specific capacitance of 87 Fg-1, whereas the 1％ (atomic ratio) Bi-doped MnO2 exhibits excellent pseudocapacitive behavior with a specific capacitance of 171 Fg”1 and shows a better cycle performance. In addition, highly stable and reversible performance after 2000 charge-discharge cycles is also demonstrated.

关键词： Manganese dioxide Bismuth Doped Supercapacitor Electrochemical properties hydrothermal

作者: Yinping Xu Chao Yang Lili Gao Xike Tian Suxin Zhang Yanxin Wang

作者单位: Faculty of Material Science and Chemistry Engineering, China University of Geosciences,Wuhan 430074, Faculty of Material Science and Chemistry Engineering, China University of Geosciences,Wuhan 430074, State key laboratory of geological processes and mineral resources, China University of Geosciences, School of Environmental Studies, China University of Geosciences, Wuhan 430074, P R China

会议类型: 国内会议

会议名称: 中国颗粒学会超微颗粒专委会2011年年会暨第七届海峡两岸超微颗粒学术研讨会

会议地点: 辽宁丹东

会议语种:英文

页码: 26-33

在线出版日期: 2011-08-08（万方平台首次上网日期，不代表论文的发表时间）