Cluster-type lithium polysulfides regulator for high performance lithium-sulfur batteries

1The strategy of modifying lithium polysulfides with cluster-type regulator to improve the performance of Li-S batteries was proposed for the first time.2The macromolecular LiPyS clusters have low solubility and thus can be confined to the cathode side.3LiPyS clusters can combine with LiPSs through double Li···S bonds to inhibit the "shuttle effect".4LiPyS clusters accelerate LiPSs redox kinetics based on frontier molecular orbital energy regulation strategy.