A high performance polysiloxane-based single ion conducting polymeric electrolyte membrane for application in lithium ion batteries

Rupesh Rohan; Kapil Pareek; Zhongxin Chen; Weiwei Cai; Yunfeng Zhang; Guodong Xu; Zhiqiang Gao; Hansong Cheng

doi:10.1039/C5TA02628H

A high performance polysiloxane-based single ion conducting polymeric electrolyte membrane for application in lithium ion batteries

Rupesh Rohan,^a Kapil Pareek,^a Zhongxin Chen,^a Weiwei Cai,^a^b Yunfeng Zhang,^a^b Guodong Xu,^a Zhiqiang Gao^a and Hansong Cheng*^a^b

Author affiliations

* Corresponding authors

^a Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore
E-mail: chghs2@gmail.com

^b Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences, 388, Lumo Road, Wuhan 430074, P. R. China

Abstract

We report a polysiloxane based single-ion conducting polymer electrolyte (SIPE) synthesized via a hydrosilylation technique. Styrenesulfonyl(phenylsulfonyl)imide groups were grafted on highly flexible polysiloxane chains followed by lithiation. The highly delocalized anionic charges in the grafted moiety give rise to weak association with lithium ions in the polymer matrix, resulting in a lithium ion transference number close to unity (0.89) and remarkably high ionic conductivity (7.2 × 10⁻⁴ S cm⁻¹) at room temperature. The high flexibility arising from polysiloxane enables the glass transition temperature (T_g) to be below room temperature. The electrolyte membrane displays high thermal stability and a strong mechanical strength. A coin cell assembled with the membrane comprised of the electrolyte and poly(vinylidene-fluoride-co-hexafluoropropene) (PVDF-HFP) performs remarkably well over a wide range of temperatures with high charge–discharge rates.

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Publication details

The article was received on 11 Apr 2015, accepted on 25 Aug 2015 and first published on 25 Aug 2015

Article type: Paper

DOI: 10.1039/C5TA02628H

Author version available: Download Author version (PDF)

Citation: J. Mater. Chem. A, 2015,3, 20267-20276

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A high performance polysiloxane-based single ion conducting polymeric electrolyte membrane for application in lithium ion batteries

R. Rohan, K. Pareek, Z. Chen, W. Cai, Y. Zhang, G. Xu, Z. Gao and H. Cheng, J. Mater. Chem. A, 2015, 3, 20267
DOI: 10.1039/C5TA02628H
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Journal of Materials Chemistry A

A high performance polysiloxane-based single ion conducting polymeric electrolyte membrane for application in lithium ion batteries

Abstract

Supplementary files

Publication details

A high performance polysiloxane-based single ion conducting polymeric electrolyte membrane for application in lithium ion batteries

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