Effects of heat treatment on the physical and electrochemical performance of gamma-MnO2

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	Effects of heat treatment on the physical and electrochemical performance of gamma-MnO2
	L. Q. Liu; J. M. Wang; H. B. Shao; M. Y. Wu; J. Q. Zhang
	2005
发表期刊	Bulletin of Electrochemistry
ISSN	0256-1654
卷号	21 期号:2 页码:83-91
摘要	gamma-MnO2 was synthesized by reducing KMnO4 with H2O2, and then calcined at various temperatures. The physical properties of the samples were examined TG-DSC, SEM, PSD, X-ray diffraction and FTIR. The effects of calcination temperature on the electrochemical performance of the samples were investigated by galvanostatic discharge, cyclic voltammetry and electrochemical impedance spectroscopy. The results show that calcination has definite effects on the crystal structure and electrochemical performance of the samples. The sample treated at 473 K a larger discharge capacity and higher discharge potential than the others, and its specific discharge capacity is 36.8% higher than commercial MnO2.
部门归属	zhejiang univ, dept chem, hangzhou 310027, peoples r china. chinese state key lab corros & protect, shenyang 110015, peoples r china.;wang, jm (reprint author), zhejiang univ, dept chem, hangzhou 310027, peoples r china;wjm@cmsce.zju.edu.cn
关键词	Gamma-mno2 Calcination Electrochemical Performance Cyclic Voltammetry Precipitated Mn(Iv) Oxides Manganese-dioxide Electrode Materials Mno2 Impedance Battery Model
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34946
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Q. Liu,J. M. Wang,H. B. Shao,et al. Effects of heat treatment on the physical and electrochemical performance of gamma-MnO2[J]. Bulletin of Electrochemistry,2005,21(2):83-91.
APA	L. Q. Liu,J. M. Wang,H. B. Shao,M. Y. Wu,&J. Q. Zhang.(2005).Effects of heat treatment on the physical and electrochemical performance of gamma-MnO2.Bulletin of Electrochemistry,21(2),83-91.
MLA	L. Q. Liu,et al."Effects of heat treatment on the physical and electrochemical performance of gamma-MnO2".Bulletin of Electrochemistry 21.2(2005):83-91.