Carbon-supported, nano-structured, manganese oxide composite electrode for electrochemical supercapacitor

Title
Carbon-supported, nano-structured, manganese oxide composite electrode for electrochemical supercapacitor
Authors
오형석Raj Kishore Sharma설용건김한성
Keywords
Supercapacitor; Manganese oxide; Composite electrode; Microemulsion; Specific capacitance
Issue Date
2007-11
Publisher
Journal of power sources
Citation
VOL 173, NO 2-1028
Abstract
Carbon-supported MnO2, nanorods are synthesized using a microemulsion process and a manganese oxide/carbon (MnO2/C) composite is investigated for use in a supercapacitor. As shown by high-resolution transmission electron microscopy the 2 mn x 10 nm MnO2 nanorods are uniformly dispersed on the carbon surface. Cyclic voltammograms recorded for the MnO2/C Composite electrode display ideal capacitive behaviour between -0.1 and 0.8 V (vs. saturated calomel electrode) with high reversibility. The specific capacitance of the MnO2/C composite electrode found to be 165 F g(-1) and is estimated to be as high as 458 F g(-1) for the MnO2. Based on cyclic voltarnmetric life-cycle tests, the MnO2/C composite electrode gives a highly stable and reversible performance for up to 10,000 cycles.
URI
http://pubs.kist.re.kr/handle/201004/67199
ISSN
0378-7753
Appears in Collections:
KIST Publication > Article
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