A novel method to prepare nanostructured manganese dioxide and its electrochemical properties as a supercapacitor electrode

被引：161

作者：

Jiang, Rongrong ^{[1
]}

Huang, Tao ^{[1
]}

Liu, Jiali ^{[1
]}

Zhuang, Jihua ^{[1
]}

Yu, Aishui ^{[1
]}

机构：

[1] Fudan Univ, Dept Chem, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2009年 / 54卷 / 11期

关键词：

Manganese dioxide; Supercapacitor; Pluronic P123; SOFT-TEMPLATE; MNO2; NANOSTRUCTURES; NICKEL-OXIDE; CAPACITOR; SOL; STORAGE; BATTERIES; ARRAYS; FILMS; CTAB;

D O I：

10.1016/j.electacta.2008.12.007

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nanostructured MnO2 was synthesized by co-precipitation in the presence of Pluronic P123 surfactant and characterized by X-ray diffraction (XRD), infrared spectroscopy (IR), scanning electron microscope (SEM) and transmission electron microscope (TEM). The sample without surfactant was spherical with particle size on the submicron scale, whereas P123-assisted samples were all loose clew shapes, consisting of MnO2 nanowires, 8-20 nm in diameter and 200-400 nm in length. The electrochemical performances of the as-prepared MnO2 as the electrode materials for supercapacitors were evaluated by cyclic voltammetry and galvanostatic charge-discharge measurements in a solution of 1 M Na2SO4. The sample without surfactant exhibited a relatively low specific capacitance of 77 Fg(-1), whereas the nanostructured MnO2 prepared with 0.02% (wt%) P123 exhibited excellent pseudocapacitive behavior, with a maximum specific capacitance of 176 Fg(-1). (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：3047 / 3052

页数：6

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