Grape-cluster-like hierarchical structure of FeS2 encapsulated in graphitic carbon as cathode material for high-rate lithium batteries

The unique grape-cluster-like hierarchical structured FeS2@GC composite to enhance the electronic/ionic conductivity, impede the dissolved polysulfide intermediates, and accommodate the volume changes to significant improvement in the rate kinetics, cycling performance, and long cycle life in virtue of the unique design, is proposed.