Properties of a nanocomposite polymer electrolyte from an amorphous comb-branch polymer and nanoparticles |
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Authors: | Feng?Zhao Mingkui?Wang Li?Qi Email author" target="_blank">Shaojun?DongEmail author |
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Institution: | (1) State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun , China |
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Abstract: | Three fully amorphous comb-branch polymers based on poly(styrene-co-maleic anhydride) as a backbone and poly(ethylene glycol) methyl ether of different molecular weights as side chains were synthesized. SiO2 nanoparticles of various contents and the salt LiCF3SO3 were added to these comb-branch polymers to obtain nanocomposite polymer electrolytes. The thermal and transport properties of the samples have been characterized. The maximum conductivity of 2.8×10–4 S cm–1 is obtained at 28 °C. In the system the longer side chain of the comb-branch polymer electrolyte increases in ionic conductivity after the addition of nanoparticles. To account for the role of the ceramic fillers in the nanocomposite polymer electrolyte, a model based on a fully amorphous comb-branch polymer matrix in enhancing transport properties of Li+ ions is proposed. |
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Keywords: | Comb-branch polymer Ionic conductivity Nanocomposite polymer electrolytes Nanoparticles |
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