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The practical application of lithium–sulfur (Li–S) batteries is gravely hampered by the dissolution and shuttle of lithium polysulfides. Herein, a zwitterionic polymer binder with both lithiophilicity and sulfophilicity is skillfully designed to realize a synergistic regulation of cations and anions through the strong interactions with lithium polysulfides. The cationic quaternary ammonium group within...
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