Role of solvent in PMMA Gel Electrolytes for Energy Systems

Analyzing the role of the solvent phase in gel electrolytes for batteries  in order to improve conductivity.

(De Gruyter) – Researchers at Brno University aimed to indicate the role of the solvent phase in a gel electrolyte. Ionic mobility was analyzed on gels containing sodium perchlorate, polymethylmethacrylate, and sulfolane as a solvent.

The researchers found that an excess of solvent increased the mobility of ions thus increasing the specific conductivity of the gels. Movement of sodium ions was not very hindered by any interactions with the polymeric chain and therefore occured in liquid phase dispersed in the polymer matrix.

The rigidity and consistency of the gel electrolyte can be adapted by the ratio between monomer and organic solvent used for synthesis. Finding the appropriate rigidity of the gel polymer electrolyte enables it to be used as a separator between the electrodes.

The next goal of the researchers is to optimize the composition and rigidity of the gel in order to improve lithium-gel electrolyte batteries.

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Edited for Content and Length by Dr. Matthew A. Hood.

The original full article can be found at De Gruyter in Electrochemical Energy Technology.

DOI: 10.1515/eetech-2016-0002

Electrochemical Energy Technology. 2016, 2(1).

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