LAUSR

Abstract MoS 2 has recently been regarded as a promising anode material for sodium ion batteries (SIBs). However, it remains challenging to attain high-performance MoS 2 -based anodes for SIBs integrated robust cyclability with rate capability more cheaply and scalably until now. Herein, via a facile polysterene nanosphere (PS)-templated sol-gel method, nitrogen-doped hierarchical porous carbon (NHPC) matrix mosaiced with ultrasmall MoS 2 nanosheets (MoS 2 @NHPC) has been synthesized as anode for SIBs. In half batteries, the MoS 2 @NHPC shows high reversible capacity (500 mA h g −1 at 0.1 A g −1 ), excellent rate capability (330 mA h g −1 at 5 A g −1 ) and robust cycling stability (340 mA h g −1 at 1 A g −1 over 550 cycles). Moreover, when coupled with the Na 3 V 2 (PO 4 ) 3 (NVP) cathode in a full battery, the MoS 2 @NHPC anode also displays high reversible specific capacity of 350 mA h g −1 at 0.2 A g −1 , and robust cycling stability of over 130 cycles. The excellent performance is benefited from the uniform mosaic of ultrasmall MoS 2 nanosheets into the NHPC, which effectively facilitates the ionic and electronic conductivity, and accommodates the volume changes during desodiation-sodiation process. Such design may enlighten to develop the other high-performance materials for energy storage.