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Issue 21, 2015
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A review of electrolyte materials and compositions for electrochemical supercapacitors

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Abstract

Electrolytes have been identified as some of the most influential components in the performance of electrochemical supercapacitors (ESs), which include: electrical double-layer capacitors, pseudocapacitors and hybrid supercapacitors. This paper reviews recent progress in the research and development of ES electrolytes. The electrolytes are classified into several categories, including: aqueous, organic, ionic liquids, solid-state or quasi-solid-state, as well as redox-active electrolytes. Effects of electrolyte properties on ES performance are discussed in detail. The principles and methods of designing and optimizing electrolytes for ES performance and application are highlighted through a comprehensive analysis of the literature. Interaction among the electrolytes, electro-active materials and inactive components (current collectors, binders, and separators) is discussed. The challenges in producing high-performing electrolytes are analyzed. Several possible research directions to overcome these challenges are proposed for future efforts, with the main aim of improving ESs' energy density without sacrificing existing advantages (e.g., a high power density and a long cycle-life) (507 references).

Graphical abstract: A review of electrolyte materials and compositions for electrochemical supercapacitors

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Publication details

The article was received on 13 Apr 2015 and first published on 08 Jun 2015


Article type: Review Article
DOI: 10.1039/C5CS00303B
Author version available: Download Author version (PDF)
Citation: Chem. Soc. Rev., 2015,44, 7484-7539
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    A review of electrolyte materials and compositions for electrochemical supercapacitors

    C. Zhong, Y. Deng, W. Hu, J. Qiao, L. Zhang and J. Zhang, Chem. Soc. Rev., 2015, 44, 7484
    DOI: 10.1039/C5CS00303B

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