叶志国,黄广斌,刘华英,董应虎,周贤良,华小珍,袁学滔

• 1:南昌航空大学材料科学与工程学院
• 2:北京有色金属研究总院

摘要(Abstract)：

采用阳极电沉积法制备MnO2粉末,并在不同温度(200～450℃)下对MnO2热处理,通过XRD分析热处理温度对MnO2粉末物相结构的影响,采用循环伏安法、恒流充放电法测试热处理温度对MnO2电极电化学性能的影响。结果表明:随着温度的升高,MnO2由原始的γ-MnO2逐渐变为β-MnO2,MnO2电极的比容量先增加后减小;当温度为300℃时,MnO2电极的比容量达到最高,在0.5 mol/L Na2SO4溶液中循环伏安扫描速度为10 mV.s-1条件下,电极比容量为156 F.g-1,且此时电极的稳定性良好,在10000个循环充放电内MnO2电极比容量几乎无衰减。

关键词(KeyWords)： 超级电容器;二氧化锰电极;热处理温度;电化学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21103085);; 航空基金(2009ZF56017);; 江西省自然科学基金(2010GQH0114)

作者(Author): 叶志国,黄广斌,刘华英,董应虎,周贤良,华小珍,袁学滔

DOI: 10.13289/j.issn.1009-6264.2012.09.004

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