Intermolecular adsorption-pairing synergy for accelerated polysulfide redox reactions towards lithium-sulfur battery with high stability

•An electrode-electrolyte interface environment for fast ion and electron transport is constructed by MXene and zwitterion.•A novel synergistic strategy (adsorption-pairing) is proposed for the first time to promote polysulfides conversion by tight intermolecular synergy.•Unique cation-anion pairing interactions with polysulfides are demonstrated. This interaction can simultaneously promote LiPSs conversion from two directions.