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An easy and facile hydrothermal method is presented to synthesize hybrid materials of hollow mesoporous Zn 0.76 Co 0.24 S nanospheres anchored on reduced graphene oxide (rGO) sheets (Zn 0.76 Co 0.24 S@N/S-rGO), in which the obtained Zn 0.76 Co 0.24 S nanospheres are composed of numerous nanoparticles. Being evaluated as anode materials for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs), the Zn 0.76 Co 0.24 S@N/S-rGO composites exhibited a high reversible capacity of 804 and 605 mA h g −1  at the current density of 1 A g −1  after 500 cycles for LIBs and SIBs, respectively. The excellent electrochemical performance of Zn 0.76 Co 0.24 S@N/S-rGO composites originates from the synergistic effect between hollow Zn 0.76 Co 0.24 S nanospheres and reduction graphene, as well as the void spaces between the neighbouring nanoparticles of Zn 0.76 Co 0.24 S providing large contact areas with electrolyte and buffer zone to accommodate the volume variation during the cycling process.

Combining Zn 0.76 Co 0.24 S with S-doped graphene as high-performance anode materials for lithium- and sodium-ion batteries