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Storing electricity as chemical energy : beyond traditional electrochemistry and double-layer compression

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Antonietti,  Markus
Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Yan,  Runyu
Martin Oschatz, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Oschatz,  Martin
Martin Oschatz, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Citation

Antonietti, M., Chen, X., Yan, R., & Oschatz, M. (2018). Storing electricity as chemical energy: beyond traditional electrochemistry and double-layer compression. Energy & Environmental Science, 11(11), 3069-3074. doi:10.1039/C8EE01723A.


Cite as: http://hdl.handle.net/21.11116/0000-0002-1579-F
Abstract
Extending the range of analysis of previous measurements on energy storage in ionic liquid (IL)-based supercapacitors with very well defined carbon materials indicates that there are two distinct processes at play: the one at lower voltages is (classically) related to the micropore inclusion of single ions, while a previously unknown high voltage transition can be ascribed to a change in the structure and coordination number of the ionic liquid. This opinion article discusses a proof of circumstantial evidence for this so far weakly understood and often overlooked mode of energy storage, which in principle could take supercapacitors to a new level of energy storage.