Formulation of ionic-liquid electrolyte to expand the voltage window of supercapacitors

Angewandte Chemie
Katherine L Van AkenYury Gogotsi

Abstract

An effective method to expand the operating potential window (OPW) of electrochemical capacitors based on formulating the ionic-liquid (IL) electrolytes is reported. Using model electrochemical cells based on two identical onion-like carbon (OLC) electrodes and two different IL electrolytes and their mixtures, it was shown that the asymmetric behavior of the electrolyte cation and anion toward the two electrodes limits the OPW of the cell and therefore its energy density. Also, a general solution to this problem is proposed by formulating the IL electrolyte mixtures to balance the capacitance of electrodes in a symmetric supercapacitor.

References

Oct 29, 2008·Nature Materials·Patrice Simon, Yury Gogotsi
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Jul 23, 2011·Chemical Society Reviews·Guoping WangJiujun Zhang
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Jun 13, 2014·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Katherine L Van AkenYury Gogotsi

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Citations

Oct 12, 2016·ACS Applied Materials & Interfaces·A V RadhamaniM S Ramachandra Rao
Feb 27, 2017·Journal of Colloid and Interface Science·Gurbir SinghTejwant Singh Kang
Nov 28, 2015·ChemSusChem·Jae-Kwang KimYoungsik Kim
May 27, 2016·Physical Chemistry Chemical Physics : PCCP·Oleg BorodinMarie-Louise Saboungi
Aug 23, 2016·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Cheng LianJianzhong Wu
Jun 21, 2018·Physical Chemistry Chemical Physics : PCCP·Yanlei WangSuojiang Zhang
Sep 8, 2016·Nature Communications·Maria R LukatskayaYury Gogotsi
Sep 20, 2018·Chemistry : a European Journal·Max E EastonRobin D Rogers
Aug 24, 2019·Physical Chemistry Chemical Physics : PCCP·Richard M FogartyKevin R J Lovelock
Sep 17, 2020·The Journal of Chemical Physics·Chang Yun Son, Zhen-Gang Wang
Jul 21, 2017·Advanced Science·Cheng ZhanDavid J Wesolowski
May 21, 2020·Frontiers in Chemistry·Shanshan PanHaitao Zhang
May 10, 2017·The Journal of Chemical Physics·Justin N NealJianzhong Wu
Mar 27, 2018·ChemElectroChem·Vitor L MartinsPeter J Hall
Jul 9, 2020·Anais Da Academia Brasileira De Ciências·Vitor L MartinsRoberto M Torresi
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Jul 14, 2018·ACS Applied Materials & Interfaces·Kayeon KeumJeong Sook Ha
Jun 24, 2020·The Journal of Physical Chemistry. B·John P Stoppelman, Jesse G McDaniel
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Oct 30, 2019·The Journal of Physical Chemistry. B·Ray MatsumotoPeter T Cummings
Aug 14, 2020·The Journal of Physical Chemistry. B·Anuj K PennathurJahan M Dawlaty

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