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Synthesis and Physicochemical Properties of Branched Solid Polymer Electrolytes Containing Ethylene Carbonate Group
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 Title & Authors
Synthesis and Physicochemical Properties of Branched Solid Polymer Electrolytes Containing Ethylene Carbonate Group
Kim, Doo-Hwan; Ryu, Sang-Woog;
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In this study polymer electrolytes containing ethylene carbonate group which have a high dielectric constant and poly(ethylene glycol) as branches were prepared by the Williamson reaction between poly(ethylene glycol) methyl ether and block copolymers composed of glycerol-1,2-carbonate and 4-chloromethyl styrene. Interestingly, the highest ionic conductivity of was observed from the polymer electrolyte having 7 mol% of ethylene carbonate and the [EO]:[Li] ratio of 32:1. Moreover, it was found that the electrochemical stability of polymer electrolyte was achieved up to 5.5 V because of the presence of ethylene carbonate.
Ethylene carbonate;Polymer electrolyte;Branch;Ionic conductivity;Electrochemical stability;
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