Nano SnO2-Al2O3 mixed oxide and SnO2-Al2O3-carbon composite oxides as new and novel electrodes for supercapacitor applications

被引：57

作者：

Jayalakshmi, A. ^{[1
]}

Venugopal, N. ^{[1
]}

Raja, K. Phani ^{[1
]}

Rao, M. Mohan ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Inorgan Chem Div, Hyderabad 500007, Andhra Pradesh, India

来源：

JOURNAL OF POWER SOURCES | 2006年 / 158卷 / 02期

关键词：

nano; mixed metal oxides; SnO2-Al2O3; -carbon; electrochemical capacitor; hydrothermal method;

D O I：

10.1016/j.jpowsour.2005.10.091

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

New nano-materials like SnO2-Al2O3 and SnO2-Al2O3-carbon were synthesized by a single step hydrothermal method in searching for novel mixed oxides with high electrochemical double layer capacitance. A SnO2-Al2O3-carbon sample was calcined at 600 degrees C and tested for its performance. The source of carbon was tetrapropyl ammonium hydroxide. The capacitive behavior of SnO2 was compared to the performance of SnO2-Al2O3, SnO2-Al2O3-carbon and calcined SnO2-Al2O3-carbon using the techniques of cyclic voltammetry, double potential step, chronopotentiometry and E-log I polarization. In 0.1 M NaCl solutions, SnO2-Al2O3 gave the best performance with a value of 119 Fg(-1) and cycled 1000 times. The nano-material mixed oxides were characterized by TEM, XRD, ICP-AES and SEM-EDAX. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1538 / 1543

页数：6

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