期刊
ELECTROCHEMISTRY
卷 75, 期 8, 页码 586-588出版社
ELECTROCHEMICAL SOC JAPAN
DOI: 10.5796/electrochemistry.75.586
关键词
multi-walled carbon nanotube (MWCNT); electric double layer capacitor (EDLC); vertically aligned MWCNT; ionic liquid; frequency response
A vertically aligned multi-walled carbon nanotube (MWCNT) electrode and a disordered MWCNT electrode are prepared to compare their structural differences and such capacitive performances as frequency response. The frequency response of a capacitor assembled with aligned MWCNT electrodes and a conventional PC-based electrolyte is much superior to a corresponding capacitor with disordered MWCNT electrodes. Such a merit of aligned MWCNT electrodes is observed even for an ionic liquid electrolyte system with high viscosity, diethylmethyl (2-methoxyethyl) ammonium tetrafluoroborate (DEMEBF4). The obtained results demonstrate that the aligned MWCNT electrode has ideal ion-accessible structure with excellent electron pathways that provide a high-rate capability regardless of electrolytes.
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