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Electrochemical Characterization of Electric Double Layer Capacitors Assembled with Pyrrolidinium-Based Ionic Liquid Electrolytes

Title
Electrochemical Characterization of Electric Double Layer Capacitors Assembled with Pyrrolidinium-Based Ionic Liquid Electrolytes
Author
김동원
Keywords
Ionic liquid; Pyrrolidinium cation; Reductive stability; Electric double layer capacitor
Issue Date
2016-09
Publisher
KOREAN ELECTROCHEMISTRY SOC
Citation
JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY, v. 7, NO. 3, Page. 199-205
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.
URI
http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=E1JTC5_2016_v7n3_199http://repository.hanyang.ac.kr/handle/20.500.11754/76685
ISSN
2093-8551
DOI
10.5229/JECST.2016.7.3.199
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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