9. EDLCs Based on Solvent-Free Ionic Liquids

  1. Prof. François Béguin2 and
  2. Prof. Elżbieta Frąckowiak3
  1. Mariachiara Lazzari,
  2. Catia Arbizzani,
  3. Francesca Soavi and
  4. Marina Mastragostino

Published Online: 5 MAR 2013

DOI: 10.1002/9783527646661.ch9

Supercapacitors: Materials, Systems, and Applications

Supercapacitors: Materials, Systems, and Applications

How to Cite

Lazzari, M., Arbizzani, C., Soavi, F. and Mastragostino, M. (2013) EDLCs Based on Solvent-Free Ionic Liquids, in Supercapacitors: Materials, Systems, and Applications (eds F. Béguin and E. Frąckowiak), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany. doi: 10.1002/9783527646661.ch9

Editor Information

  1. 2

    Poznan University of Technology, Faculty of Chemical Technology, u1. Piotrowo 3, Poznan, 60-965, Poland

  2. 3

    Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemistry and Technical Electrochemistry, u1. Piotrowo 3, Poznan, 60-965, Poland

Author Information

  1. Alma Mater Studiorum, Università di Bologna, Dipartimento di Scienza dei Metalli, Elettrochimica e Tecniche Chimiche, Via San Donato 15, 40127 Bologna, Italy

Publication History

  1. Published Online: 5 MAR 2013
  2. Published Print: 20 MAR 2013

ISBN Information

Print ISBN: 9783527328833

Online ISBN: 9783527646661

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Keywords:

  • solvent-free ionic liquids;
  • carbon electrodes;
  • cell configurations;
  • supercapacitors;
  • carbon porosity;
  • hybrid-electric vehicle

Summary

High-power supercapacitors are key energy storage/conversion systems for applications ranging from sustainable transportation to grid-connected renewable energy plants. Research activity worldwide is focused currently on developing systems of increased specific energy without sacrificing power capability and cycling stability. Here, we shall focus on the use of ionic liquids (ILs) as solvent-free electrolytes in electric double-layer capacitors (EDLCs), which represent a powerful strategy for the development of safe, high-energy supercapacitors. The features of solvent-free IL/electrode interface are reported and an overview of the physicochemical properties of the most investigated ILs is given to highlight the main requirements for the effective use of ILs in supercapacitors. The properties of carbon electrode materials for IL-based EDLCs, which should be tailored in relation to the nature of the IL, are discussed and particular emphasis is given to carbon porosity and surface chemistry. Cell configurations of IL-based EDLCs, which make possible high voltages and high specific energy, are also described in some detail and the most recent advances in IL-based EDLCs are reviewed.