Journal
MATERIALS LETTERS
Volume 110, Issue -, Pages 105-107Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2013.07.121
Keywords
Supercapacitor; Electric double-layer capacitor; Ketjenblack; Nanofiller; Porosity
Funding
- Scientific Research Grant from the Japan Society for the Promotion of Science
- Program to Disseminate Tenure Tracking System from the Japanese Ministry of Education, Culture, Sports, Science and Technology
- Scientific Research on Priority Areas from the University of Miyazaki
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This study presents the capacitive behavior of a supercapacitor (SC) having mesoporous graphitized Ketjenblack (KB) (modified KB (MKB)) as a conductive nanofiller in its polarized electrodes. Galvanostatic charge/discharge and cyclic voltammogram tests were conducted for SCs containing MKB and normal KB (for reference). The SC containing MKB required long charging periods under constant-current charging. This was due to its higher energy density and anode capacitance (181 F g(-1)), as compared to that of the SC containing KB. Moreover, the SC containing MKB retained its high capacitance better at higher scan rates. (C) 2013 Elsevier BM. All rights reserved.
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