通过水热法制备出导电碳负载的二硫化钼纳米片（MoS2@C），显著改善了二硫化钼循环稳定性和倍率性能：在0.1 A/g电流密度下，循环100次后，可逆比容量依然高达466.3 mA·h/g，容量保持率达90.6%；在10 A/g的电流密度下，可逆比容量高达321.5 mA·h/g；在1A/g电流密度下长循环500次后，可逆比容量为313 mA·h/g，未发生衰减。这是因为二硫化钼以导电碳作为基底后，既可以提高电子和钠离子在复合材料中的扩散效率，又可以抑制二硫化钼的团聚，另外，小尺寸的二硫化钼可以缩短钠离子的传递路径，之间的空隙为二硫化钼体积的膨胀提供了空间。通过对两个电极的动力学分析，发现钠离子在MoS2@C内部具有更高的扩散效率，赝电容控制行为是MoS2@C电极具有优异倍率性能的主要原因。

Conductive carbon?鄄loaded MoS2（MoS2@C） nanosheets were prepared by hydrothermal method，which significantly improved the cycle stability and rate performance of MoS2：under a current density of 0.1 A/g，the reversible specific capacity was still as high as 466.3 mA·h/g and the capacity retention rate was up to 90.6% after 100 cycles.Under a current density of 10 A/g，the reversible specific capacity was up to 321.5 mA·h/g. After a long cycle of 500 times，under a current density of1 A/g，the reversible specific capacity was 313 mA·h/g without capacity decay.This was because MoS2@C composite structure could improve the diffusion efficiency of electrons and sodium ions in the composite material and could inhibit the agglome?鄄ration of MoS2.In addition，the small size of MoS2 could shorten the transmission path of sodium ions and provided space for the expansion of the MoS2 volume.Through the kinetic analysis of the two electrodes，it was found that sodium ions had higher diffusion efficiency within MoS2@C electrode，and the pseudocapacitive control behavior was the main reason for the excellent rate performances of MoS2@C electrode.