The research on the design of IL electrolytes for supercapacitor applications has seen a tremendous increase during the past few years. Differently from Li-batteries where the electrolyte composition and stability must fit with several requirements (SEI formation, electrochemical kinetics), there is potentially more room for breakthroughs in supercapacitor applications. While IL can be used as salt dissolved in solvent, the most promising route seems to be using neat IL, protic or aprotic, for enhancing the energy density and improving the safety of the devices. Designing the electrolyte in conjunction with the carbon structure is certainly a way to go for developing the next generation of high energy supercapacitors operating a large temperature range.This talk will firstly present results about the experimental study of the ion confinement effect on the capacitive properties of microporous carbons. We will show that ionic liquids can be efficiently used as model electrolytes for pushing further our basic understanding of the electrolyte/carbon interactions in confined environment. In a second part, we will present results showing that a careful design of the carbon structure in conjunction with the electrolyte is a way to go for designing high energy density supercapacitors with a large operation temperature range.

Ion confinement effect af the carbon/electrolyte interface and its consequence on the capacitive behavior of nanostructured carbons

247th National Meeting (2014)

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