| 학회 |
한국화학공학회 |
| 학술대회 |
2016년 봄 (04/27 ~ 04/29, 부산 BEXCO) |
| 권호 |
22권 1호, p.624 |
| 발표분야 |
에너지 |
| 제목 |
Bulk concentration dependence of electrolyte resistance within mesopores of carbon electrodes in electric double-layer capacitors |
| 초록 |
Hexagonally ordered mesoporous carbon materials were synthesized and used as electrode materials in an EDLC. Using this electrode, the change of electrolyte resistance within the mesopores was investigated according to the bulk electrolyte concentration. Using three different electrochemical transient experiments—imaginary capacitance analysis, chronoamperometry, and chronopotentiometry—the time constant associated with electrolyte transport was determined, which was then used to obtain the electrolyte resistance within the mesopores. With decreasing electrolyte concentration, the increase in electrolyte resistance was smaller than the increase in the resistivity of the bulk electrolyte, which is indicative of a different environment for ionic transport within the mesopores. On using the confinement effect within the mesopores, the predicted higher concentration within mesopore probably results in lower electrolyte resistance, especially under low bulk concentrations. |
| 저자 |
김재광, 이일복, 김다은, 황기범, 김효성, 김득환, 최진혁, 윤성훈
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