Journal
JOURNAL OF POWER SOURCES
Volume 250, Issue -, Pages 343-351Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.10.147
Keywords
Supercapacitors; Ionic liquids; Salt concentration; High energy
Funding
- Westfalische Wilhelms-Universitat Munster
- Ministerium fur Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen (MIWFT)
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In EDLCs the energy is stored in the double layer formed by the ions of the electrolyte. Hence, during charge discharge the ion concentration changes and therefore also the electrolyte should be considered as active material. In the past it has been shown that the performance of EDLCs based on non-aqueous electrolytes is mainly limited by ion concentration of the electrolytes. Taking this point into account, we considered the influence of the salt concentration on the theoretical and practical energy of high voltage EDLCs containing innovative electrolytes with the aim to understand the advantages and the limits related to their use. (C) 2013 Elsevier B.V. All rights reserved.
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