Cubic MnSe2 microcubes enabling high-performance sulfur cathodes for lithium–sulfur batteries

Cubic MnSe2 microcubes are introduced into sulfur cathodes to prevent the shuttle effect of lithium polysulfide through binding with polysulfide via the strong interaction between Se and S, thus alleviate the shuttle effect significantly. Improved cycle performance and rate capability are achieved. This work offers a new strategy to develop high-performance lithium–sulfur batteries.