Synthesis and electrochemical properties of α-MnO2 microspheres

被引：71
|
作者：
Wang, Hong-En [1 ,2 ]
Qian, Dong [1 ]
机构：
[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
[2] Zhengzhou Res Inst Light Met, Zhengzhou Res Inst CHALCO, Zhengzhou 450041, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2008年 / 109卷 / 2-3期
关键词：
microporous materials; oxides; chemical synthesis; electrochemical properties;
D O I：
10.1016/j.matchemphys.2007.12.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report the synthesis of alpha-MnO2 microspheres by a low-temperature hydrothermal method involving no templates or catalysts. The products were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Energy-dispersive X-ray spectrum (EDX), transmission electron microscopy (TEM), Fourier transform infrared spectrum (FT-IR), and Brunauer-Emmett-Teller (BET). The results show that the as-synthesized products are mainly composed of large quantities of alpha-MnO2 microspheres having a sea-urchin shape and a few microspheres constructed of small nanorods. Electrochemical characterization indicates that the resulting alpha-MnO2 microspheres display promising discharge properties than the commercial electrolytic manganese dioxides (EMD) when used as cathodes in alkaline Zn-MnO2 batteries. (D 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：399 / 403
页数：5
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