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Issue 1, 2016
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Pressing a spring: what does it take to maximize the energy storage in nanoporous supercapacitors?

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Abstract

We discuss the nonlinear effects and efficiency of charge storage in supercapacitors with nanoporous electrodes and ionic liquids, and demonstrate that to maximize the stored energy, it may be beneficial to create ‘obstacles’ or ‘difficulties’ in charging. This can be achieved by making thermodynamically unfavourable conditions for ions inside nanopores, or more favourable outside. We show by means of Monte Carlo simulations that such ‘ionophobic’ pores store energy more efficiently and can provide equivalent or even better energy capacity. Since the recent analysis predicts much faster charging of ionophobic nanopores, we conclude that such pores offer a better option for simultaneous energy/power optimization.

Graphical abstract: Pressing a spring: what does it take to maximize the energy storage in nanoporous supercapacitors?

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Publication details

The article was received on 02 Jun 2015, accepted on 06 Aug 2015 and first published on 16 Sep 2015


Article type: Communication
DOI: 10.1039/C5NH00004A
Citation: Nanoscale Horiz., 2016,1, 45-52
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    Pressing a spring: what does it take to maximize the energy storage in nanoporous supercapacitors?

    S. Kondrat and A. A. Kornyshev, Nanoscale Horiz., 2016, 1, 45
    DOI: 10.1039/C5NH00004A

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