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Issue 41, 2015
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Flexible thin-film battery based on graphene-oxide embedded in solid polymer electrolyte

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Abstract

Enhanced safety of flexible batteries is an imperative objective due to the intimate interaction of such devices with human organs such as flexible batteries that are integrated with touch-screens or embedded in clothing or space suits. In this study, the fabrication and testing of a high performance thin-film Li-ion battery (LIB) is reported that is both flexible and relatively safer compared to the conventional electrolyte based batteries. The concept is facilitated by the use of solid polymer nanocomposite electrolyte, specifically, composed of polyethylene oxide (PEO) matrix and 1 wt% graphene oxide (GO) nanosheets. The flexible LIB exhibits a high maximum operating voltage of 4.9 V, high capacity of 0.13 mA h cm−2 and an energy density of 4.8 mW h cm−3. The battery is encapsulated using a simple lamination method that is economical and scalable. The laminated battery shows robust mechanical flexibility over 6000 bending cycles and excellent electrochemical performance in both flat and bent configurations. Finite element analysis (FEA) of the LIB provides critical insights into the evolution of mechanical stresses during lamination and bending.

Graphical abstract: Flexible thin-film battery based on graphene-oxide embedded in solid polymer electrolyte

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Supplementary files

Article information


Submitted
29 Jun 2015
Accepted
27 Sep 2015
First published
30 Sep 2015

Nanoscale, 2015,7, 17516-17522
Article type
Paper
Author version available

Flexible thin-film battery based on graphene-oxide embedded in solid polymer electrolyte

M. Kammoun, S. Berg and H. Ardebili, Nanoscale, 2015, 7, 17516
DOI: 10.1039/C5NR04339E

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