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Article

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

Supporting Info

Zhengcheng Zhang, David Sherlock, Ryan West, and Robert West

Organosilicon Research Center, Department of Chemistry, University of Wisconsin

Madison, 1101 University Avenue, Madison, Wisconsin 53706

Khalil Amine

Chemical Technology Division, Argonne National Laboratory, Argonne, Illinois 60439

Leslie J. Lyons*

Department of Chemistry, Grinnell College, Grinnell, Iowa 50112

Macromolecules, 2003, 36 (24), pp 9176–9180

DOI: 10.1021/ma0349276

Publication Date (Web): October 28, 2003

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.

Abstract

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.

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