Carbon Redox-Polymer-Gel Hybrid Supercapacitors.

Abstract:

:Energy storage devices that provide high specific power without compromising on specific energy are highly desirable for many electric-powered applications. Here, we demonstrate that polymer organic radical gel materials support fast bulk-redox charge storage, commensurate to surface double layer ion exchange at carbon electrodes. When integrated with a carbon-based electrical double layer capacitor, nearly ideal electrode properties such as high electrical and ionic conductivity, fast bulk redox and surface charge storage as well as excellent cycling stability are attained. Such hybrid carbon redox-polymer-gel electrodes support unprecedented discharge rate of 1,000C with 50% of the nominal capacity delivered in less than 2 seconds. Devices made with such electrodes hold the potential for battery-scale energy storage while attaining supercapacitor-like power performances.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Vlad A,Singh N,Melinte S,Gohy JF,Ajayan PM

doi

10.1038/srep22194

subject

Has Abstract

pub_date

2016-02-26 00:00:00

pages

22194

issn

2045-2322

pii

srep22194

journal_volume

6

pub_type

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