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Electrochemical Characterization of Electric Double Layer Capacitors Assembled with Pyrrolidinium-Based Ionic Liquid Electrolytes
- Cho, Jinhyun;
- Shin, Won-Kyung;
- Kim, Dong-Won;
- Kim, Young Rae;
- Lee, Byung Jun;
- 외 1명
WEB OF SCIENCE
8SCOPUS
9초록
We present the electrochemical performance of electric double layer capacitors (EDLCs) assembled with pyrrolidinium (Pyr)-based ionic liquid electrolytes at 55 degrees C. Cations with various alkyl chain lengths were employed in Pyr-based ionic liquids to investigate the effect of cation structure on the cycling stability of EDLCs. The EDLCs exhibited initial specific capacitances ranging from 122.4 to 131.6 F g(-1) based on activated carbon material at 55 degrees C. Cycling data and XPS results demonstrate that Pyr-based ionic liquid with longer alkyl chain is more effective for enhancing the cycling stability of EDLC by suppressing the reductive decomposition of pyrrolidinium cations during cycling at high temperatures.
키워드
- 제목
- Electrochemical Characterization of Electric Double Layer Capacitors Assembled with Pyrrolidinium-Based Ionic Liquid Electrolytes
- 저자
- Cho, Jinhyun; Shin, Won-Kyung; Kim, Dong-Won; Kim, Young Rae; Lee, Byung Jun; Kim, Sang-Gil
- 발행일
- 2016-09
- 유형
- Article
- 권
- 7
- 호
- 3
- 페이지
- 199 ~ 205