Cross-Linked Network Polymer Electrolytes Based on a Polysiloxane Backbone with Oligo(oxyethylene) Side Chains:  Synthesis and Conductivity

A novel cross-linked siloxane-based solid polymer network has been synthesized by the hydrosilylation of polymethylhydrosiloxane (PMHS) partly substituted with oligo(ethylene glycol) methyl ether side groups and a α,ω-diallyl poly(ethylene glycol) cross-linking reagent. The ionic conductivities of t...

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Bibliographic Details
Published in:Macromolecules 2003-12, Vol.36 (24), p.9176-9180
Main Authors: Zhang, Zhengcheng, Sherlock, David, West, Ryan, West, Robert, Amine, Khalil, Lyons, Leslie J
Format: Article
Language:English
Subjects:
Applied sciences
Chemical modifications
Exact sciences and technology
Inorganic and organomineral polymers
Physicochemistry of polymers
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Summary:A novel cross-linked siloxane-based solid polymer network has been synthesized by the hydrosilylation of polymethylhydrosiloxane (PMHS) partly substituted with oligo(ethylene glycol) methyl ether side groups and a α,ω-diallyl poly(ethylene glycol) cross-linking reagent. The ionic conductivities of the networks doped with LiTFSI are high at ambient temperature (σ = 1.33 × 10-4 S cm-1 at the optimum LiTFSI concentration EO/Li+ = 20:1). The temperature dependence of the conductivity followed the VTF form, indicating that polymer segmental motion assists the ion transport in the solid networks.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma0349276