Multifunctional Properties of Structural Gel Electrolytes

Report No. ARL-RP-223
Authors: P-A. T. Nguyen; J. F. Snyder
Date/Pages: September 2008; 18 pages
Abstract: Multifunctional structural gel electrolytes were prepared by the integration of conductive pathways using non-aqueous solvents into structural resin networks. Poly(ethylene) glycol (200 MW) and propylene carbonate were used as non-aqueous solvents while vinyl ester and epoxy resin were used as structural resins. The monomer and solvents were incorporated together and polymerized to create conductive pathways in crosslinked networks. The impact of chemistry and weight fraction of both liquid and resin were investigated on the electrochemical-mechanical response of the resulting system. The addition of liquid solvent generally improves the performance of electrochemical properties relative to solid state polymer electrolytes, although at the expense of mechanical robustness. Crosslinking the polymer matrix is employed to improve mechanical performance. The ionic conductivity and compressive modulus were measured by AC impedance and compression respectively. Dynamic Mechanical Analysis was utilized to validate the processing conditions and material characterization.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2008