Effect of Dibenzo-18-crown-6 on the Polymer Electrolyte/Lithium Anode Interface |
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Authors: | O?V?Yarmolenko Email author" target="_blank">O?N?EfimovEmail author |
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Institution: | (1) Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika N.N. Semenova 1, Chernogolovka, Moscow oblast, 142432, Russia |
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Abstract: | Photocured polymer electrolytes, applied onto a porous polypropylene separator, with conduction by lithium cations (1 × 10−4 S cm−1 at 20°C) are designed. The polymer is formed from a 1 : 1 mixture of oligourethane dimethacrylate and polypropylene glycol monomethacrylate, which are capable of undergoing polymerization via double bonds in a liquid organic electrolyte (0.5 M LiClO4) in a 1 : 1 mixture of propylene carbonate and dimethoxyethane. The polymer electrolyte comprises a polymer composition (20 wt %), a liquid electrolyte (78 wt %), and a photoinducer (2 wt %). Effect of insertion of dibenzo-18-crown-6 into the electrolyte on its electrochemical characteristics (on the electrolyte/Li interface) is investigated. Dependences of the bulk conductivity and exchange currents at the interface on the temperature and storage duration are studied at different crown ether contents.__________Translated from Elektrokhimiya, Vol. 41, No. 5, 2005, pp. 646–650.Original Russian Text Copyright © 2005 by Yarmolenko, Efimov. |
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Keywords: | polymer gel electrolyte photoinduced polymerization electrochemical impedance |
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