|
|
| Type |
Poster Presentation |
| Area |
전기화학 |
| Room No. |
포스터발표장 |
| Time |
4월 21일 (금요일) 13:00~14:30 |
| Code |
ELEC.P-503 |
| Subject |
Development of novel electrolytic salts for high voltage Electrical Double Layer Capacitors |
| Authors |
송태환, 이경구*, 이상희*
군산대학교 화학과, Korea
|
| Abstract |
EDLC is a high-power, high-stability energy storage device that expresses capacitance via electric double layers.
However, the energy density per volume is low. An effective way to improve energy density is to improve the operating voltage. There is a limit to the oxidation stability of solvents, cations, and anions, which are the constituents of the electrolytic solution. Therefore, there is a request to develop novel electrolytic salts that can be used at higher voltages than existing electrolytic salts. In this research, we synthesized novel electrolytic salts with high purity, the properties new salts were studied with electrochemical evaluation methods. The new electrolytic salts were dissolved in the acetonitrile solvent. EDLCs using kinds of electrolytes were evaluated with maximum proposed operating voltage of 3.1V or higher in order to investigate about the oxidation decomposition of these kinds of novel electrolytes at high certain voltages. The cations salts were synthesized and the anions of cations salts were ion-exchanged with the commercial electrolytic salts which are used popularly in lithium-ion batteries. After synthesizing novel electrolytic salts, 1 H-NMR and 13 C-NMR measurements were used to confirm the synthesis. The novel electrolyte salts were evaluated with EDLC to investigate about the Coulumbic efficiency and discharge capacitance were measured according to the voltage step mode, and the performance were compared with the existing electrolyte salts up to now. |
| E-mail |
sth4324@naver.com |
|
119th General Meeting of the KCS