| http://www.w3.org/ns/prov#value | - cyclic, and may contain one or more atoms other than carbon, hydrogen or oxygen; and (b) at least one electrolyte salt, wherein said electrolyte salt is at least one compound selected from an alkali metal salt, a quaternary ammonium salt, a quaternary phosphonium salt and a transition metal salt,wherein said solid polymer electrolyte further contains a plasticizer. 8.
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