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Electrochemical Characterization of Electric Double Layer Capacitors Assembled with Pyrrolidinium-Based Ionic Liquid Electrolytesopen access
- Issue Date
- Sep-2016
- Publisher
- KOREAN ELECTROCHEMISTRY SOC
- Keywords
- Ionic liquid; Pyrrolidinium cation; Reductive stability; Electric double layer capacitor
- Citation
- JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY, v.7, no.3, pp.199 - 205
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY
- Volume
- 7
- Number
- 3
- Start Page
- 199
- End Page
- 205
- ISSN
- 2093-8551
- Abstract
- 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.
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Related Researcher
- Kim, Dong Won
- COLLEGE OF ENGINEERING (DEPARTMENT OF CHEMICAL ENGINEERING)