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Supercapacitor operating at 200 degrees celsius.

ABSTRACT: The operating temperatures of current electrochemical energy storage devices are limited due to electrolyte degradation and separator instability at higher temperatures. Here we demonstrate that a tailored mixture of materials can facilitate operation of supercapacitors at record temperatures, as high as 200°C. Composite electrolyte/separator structures made from naturally occurring clay and room temperature ionic liquids, with graphitic carbon electrodes, show stable supercapacitor performance at 200°C with good cyclic stability. Free standing films of such high temperature composite electrolyte systems can become versatile functional membranes in several high temperature energy conversion and storage applications.

SUBMITTER: Borges RS

PROVIDER: S-EPMC3759840 | biostudies-other | 2013

REPOSITORIES: biostudies-other

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Supercapacitor operating at 200 degrees celsius.

Borges Raquel S RS Reddy Arava Leela Mohana AL Rodrigues Marco-Tulio F MT Gullapalli Hemtej H Balakrishnan Kaushik K Silva Glaura G GG Ajayan Pulickel M PM

Scientific reports 20130101

The operating temperatures of current electrochemical energy storage devices are limited due to electrolyte degradation and separator instability at higher temperatures. Here we demonstrate that a tailored mixture of materials can facilitate operation of supercapacitors at record temperatures, as high as 200°C. Composite electrolyte/separator structures made from naturally occurring clay and room temperature ionic liquids, with graphitic carbon electrodes, show stable supercapacitor performance ...[more]

PMID: 23999206

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