Structural supercapacitor electrolytes based on bicontinuous ionic liquid–epoxy resin systems
Natasha Shirshova , Alexander Bismarck , Shuaijin Carreyette , Quentin P. V. Fontana , Emile S. Greenhalgh , Per Jacobsson , Patrik Johansson , Maciej J. Marczewski , Gerhard Kalinka , Anthony R. J. Kucernak , Johan Scheers , Milo S. P. Shaffer , Joachim H. G. Steinke , Malte Wienrich
Abstract‘Structural electrolytes’ retain the desirable mechanical characteristics of structural (epoxy) resins whilst introducing sufficient ionic conductivity to operate as electrolytes in electrochemical devices. Here, a series of ionic liquid–epoxy resin composites were prepared to identify the optimum system microstructure required to achieve a high level of multifunctionality. The ionic conductivity, mechanical properties, thermal stability and morphology of the cured epoxy based structural electrolytes were studied as a function of phase composition for three fully formulated high performance structural epoxy systems. At only 30 wt% of structural resin and 70 wt% of ionic liquid based electrolyte, stiff monolithic plaques with thicknesses of 2–3 mm were obtained with a room temperature ionic conductivity of 0.8 mS cm−1 and a Young's modulus of 0.2 GPa. This promising performance can be attributed to a long characteristic length scale spinodal microstructure, suggesting routes to further optimisation in the future.
|Journal series||Journal of Materials Chemistry A: materials for energy and sustainability, ISSN 2050-7488, [2050-7496]|
|Publication size in sheets||0.5|
|ASJC Classification||; ;|
|Score|| = 0.0, 09-01-2020, ArticleFromJournal|
= 40.0, 09-01-2020, ArticleFromJournal
|Publication indicators||= 55; = 53; : 2014 = 1.508; : 2014 = 7.443 (2) - 2014=7.449 (5)|
|Citation count*||6 (2015-03-11)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.