Nanoparticulate magnetite thin films as electrode materials for the fabrication of electrochemical capacitors

被引：50
|
作者：
Pang, Suh Cem [1 ]
Khoh, Wai Hwa [1 ]
Chin, Suk Fun [1 ]
机构：
[1] Univ Malaysia Sarawak, Dept Chem, Fac Resource Sci & Technol, Kota Samarahan 94300, Sarawak, Malaysia
来源：
JOURNAL OF MATERIALS SCIENCE | 2010年 / 45卷 / 20期
关键词：
SPINEL IRON-OXIDE; MANGANESE-DIOXIDE;
D O I：
10.1007/s10853-010-4622-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetite nanoparticles in stable colloidal suspension were prepared by the co-precipitation method. Nanoparticulate magnetite thin films on supporting stainless steel plates were prepared by drop-coating followed by heat treatment under controlled conditions. The effects of calcination temperature and atmosphere on the microstructure and electrochemical properties of nanoparticulate magnetite thin films were investigated. Nanoparticulate magnetite thin films prepared under optimized conditions exhibited a specific capacitance value of 82 F/g in mild aqueous 1.0 M Na(2)SO(4) solution. Due to their high charge capacity, good cycling reversibility, and stability in a mild aqueous electrolyte, nanoparticulate magnetite thin films appear to be promising electrode materials for the fabrication of electrochemical capacitors.
引用
收藏
页码：5598 / 5604
页数：7
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