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A study of the electrochemical performance of strip supercapacitors under bending conditions

journal contribution
posted on 10.10.2016, 13:30 by Ruirong Zhang, Yanmend Xu, David J. Harrison, John Fyson, Darren SoutheeDarren Southee
In recent years, much effort has been spent developing thin, lightweight and flexible energy storage devices to meet the various requirements of modern smart electronics. In this work, thin strip supercapacitors were successfully developed using activated carbon as the active electrode material. The electrochemical performance of these strip supercapacitors has been studied under mechanical bending conditions. The results indicate that the strip supercapacitor was functional under bending conditions between the bending angles of 30° to 150°. The capacitance of the sample was still about 70% of the original capacitance at different bending angles. This suggests the strip supercapacitor developed has a reasonable flexibility. Simulation model of equivalent circuit was established to analyze the charge transfer resistance (CTR) and equivalent series resistance (ESR) results in electrochemical impedance spectroscopy (EIS) testing. The correlation between the capacitance and the resistance of the strip supercapacitor under bending conditions was investigated and obtained.

Funding

This work was supported by the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 281063.

History

School

  • Design

Published in

International Journal of Electrochemical Science

Pages

7922 - 7933

Citation

ZHANG, R. ... et al., 2016. A study of the electrochemical performance of strip supercapacitors under bending conditions. International Journal of Electrochemical Science, 11 (1) pp. 7922-7933.

Publisher

© 2016 The Authors. Published by ESG

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/

Acceptance date

18/07/2016

Publication date

2016

eISSN

1452-3981

Language

en