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Issue 7, 2016
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Capacitive deionization in organic solutions: case study using propylene carbonate

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Abstract

Capacitive deionization (CDI) is an emerging technology for the energy-efficient removal of dissolved ions from aqueous solutions. Expanding this technology to non-aqueous media, we present an experimental characterization of a pair of porous carbon electrodes towards electrosorption of dissolved ions in propylene carbonate. We demonstrate that application of CDI technology for treatment of an organic solution with an electrochemical stability window beyond 1.2 V allows for a higher salt removal capacity and higher charge efficiency as compared to CDI applied for treatment of aqueous electrolytes. Further, we show that using conductivity measurements of the stream emerging from the CDI cell combined with an equilibrium electric double-layer structure model, we can gain insights into charge compensation mechanisms and ion distribution in carbon nanopores.

Graphical abstract: Capacitive deionization in organic solutions: case study using propylene carbonate

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Supplementary files

Article information


Submitted
07 Oct 2015
Accepted
05 Jan 2016
First published
08 Jan 2016

This article is Open Access

RSC Adv., 2016,6, 5865-5870
Article type
Paper

Capacitive deionization in organic solutions: case study using propylene carbonate

S. Porada, G. Feng, M. E. Suss and V. Presser, RSC Adv., 2016, 6, 5865
DOI: 10.1039/C5RA20786J

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