Researchers report the promising electrochemical charge-discharge properties of the carbon-sulfur composite, in which sulfur is impregnated in the porous hollow carbon spheres (PHCSs) via a melt-diffusion method. The results illustrate that the porous carbon-sulfur composite with hierarchically porous structure are potential in the application as the cathode of Li-S batteries because of their effective improvement of the electronic conductivity, the repression of the volume expansion, and the reduction of the shuttling loss.
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