{TAIL ~ The hybrid polymeric} 1 or 2, which has an ionic conductivity of at least 1×10−5 S/cm and which is substantially insusceptive to oxidation and reduction at {HEAD ~ an electric potential} in the range of from 1 to 3 V as measured relative to a reference electrode of metallic lithium 
{ TAIL ~ The hybrid polymeric } 1 or 2 , which has an ionic conductivity of at least 1×10−5 S / cm and which is substantially insusceptive to oxidation and reduction at { HEAD ~ an electric potential } in the range of from 1 to 3 V as measured relative to a reference electrode of metallic lithium
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