Issue 28, 2011
From the journal:

Journal of Materials Chemistry

A new highly conductive organic-inorganic solid polymer electrolyte based on a di-ureasil matrix doped with lithium perchlorate†

Diganta Saikia,a   Yu-Han Chen,a   Yu-Chi Pan,a   Jason Fang,b   Li-Duan Tsai,b   George T. K. Feyc  and  Hsien-Ming Kao*a  

* Corresponding authors

a Department of Chemistry, National Central University, Chung-Li, Taiwan, R.O.C
E-mail: hmkao@cc.ncu.edu.tw
Fax: +886 3 4227664
Tel: +886 3 4275054

b Department of Fuel Cell Materials and Advanced Capacitors, Division of Energy Storage Materials and Technology, Material and Chemical Laboratories, Industrial Technology Research Institute, Hsin-Chu, Taiwan, R.O.C

c Department of Chemical and Materials Engineering, National Central University, Chung-Li, Taiwan, R.O.C

Abstract

A new hybrid organic-inorganic polymer electrolyte based on poly(propylene glycol) tolylene 2,4-diisocyanate terminated (PPGTDI), poly(propylene glycol)-block–poly(ethylene glycol)-block-poly(propylene glycol) bis(2-aminopropyl ether) (ED2000) and 3-isocyanatepropyltriethoxysilane (ICPTES) has been synthesized and characterized. A maximum ionic conductivity value of 1.0 × 10−4 S cm−1 at 30 °C and 1.1 × 10−3 S cm−1 at 80 °C is achieved for the hybrid electrolyte with a [O]/[Li] ratio of 32. The conductivity mechanism changes from Arrhenius to Vogel-Tamman-Fulcher (VTF) behavior with the increase in temperature from 20 to 80 °C. The present hybrid electrolyte system offers a remarkable improvement in ionic conductivity by at least one order of magnitude higher than the previously reported organic-inorganic electrolytes. The 7Li NMR (nuclear magnetic resonance) results reveal that there exists a strong correlation between the dynamic properties of the charge carriers and the polymer matrix. Two Li+ local environments are identified, for the first time, in such a di-ureasil based polymer electrolyte. The electrochemical stability window is found to be in the range of 4.6–5.0 V, which ensures that the present hybrid electrolyte is a potential polymer electrolyte for solid-state rechargeable lithium ion batteries.

Graphical abstract: A new highly conductive organic-inorganic solid polymer electrolyte based on a di-ureasil matrix doped with lithium perchlorate

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Article information

DOI
https://doi.org/10.1039/C1JM11177A
Article type
Paper
Submitted
19 Mar 2011
Accepted
03 May 2011
First published
17 Jun 2011

J. Mater. Chem., 2011,21, 10542-10551

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A new highly conductive organic-inorganic solid polymer electrolyte based on a di-ureasil matrix doped with lithium perchlorate

D. Saikia, Y. Chen, Y. Pan, J. Fang, L. Tsai, G. T. K. Fey and H. Kao, J. Mater. Chem., 2011, 21, 10542 DOI: 10.1039/C1JM11177A

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