Rationally engineering a binary SnS0.5Se0.5/carbon nest-coated Si nanosphere for a high-performance lithium-ion battery anode

/C is significantly lower than that of the pure components, and the stress-strain relationship of the Li-Si system is demonstrated by density functional theory (DFT) calculations. The engineering of the binary-nest structure should be able to provide some new ideas for developing many other high-performance energy-storage hybrids.