In this work, we incorporated nickel sulfide into the sulfur cathode design through a facile two-step strategy. Note that nickel sulfide here can trap the polysulfide intermediates and inhibit the shuttle effect owing to its binding interactions with polysulfide. Moreover, the low resistivity of nickel sulfide is expected to facilitate the redox kinetics of the adsorbed polysulfides. As a result, this hybrid cathode with a sulfur loading of 4.0 mg/cm2 could manifest an excellent electrochemical performance at a high current density.
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