Metal sulfides are promising anode materials for lithium ion batteries (LIBs) and sodium ion batteries (SIBs) owing to their high theoretical capacity and good reaction reversibility upon lithiation/delithiation and sodiation/desodiation. However, the practical application of metal sulfides is severely hindered by its poor conductivity and huge volume change during cycling. Herein, a three dimensional hierarchical architecture is rational designed and synthesized through incorporating ZnS-SnS heterostructure encapsulated by carbon shell into graphene matrix. The interconnected conductive networks from the graphene skeleton and outer coating carbon can not only provide a high efficient transfer path for electron and ion, but also accommodate the volume variation effectively upon charging/discharging. Additionally, the in-situ constructed ZnS-SnS heterostructures provide extra charge transfer driving force because of a built-in electric field. Consequently, the as obtained [email protected] hollow nanoboxes wrapped by grpahene show high specific capacity, long cycle lifetime and excellent rate performance when applied for anodes of LIBs and SIBs.

金属硫化物由于其高的理论容量和在锂化/脱锂化和钠化/脱氧时的良好反应可逆性，是锂离子电池（LIB）和钠离子电池（SIB）的有希望的负极材料。但是，金属硫化物的实际应用因其差的电导率和循环过程中的巨大体积变化而受到严重阻碍。本文通过将碳壳包裹的ZnS-SnS异质结构掺入石墨烯基体中，合理设计和合成了三维层次结构。由石墨烯骨架和外部涂层碳互连的导电网络不仅可以为电子和离子提供高效的传输路径，而且在充电/放电时可以有效地适应体积变化。此外，由于内置电场，原位构建的ZnS-SnS异质结构提供了额外的电荷转移驱动力。因此，当用于LIBs和SIBs的阳极时，由grpahene包裹的所获得的[电子邮件保护的]空心纳米盒表现出高的比容量，长的循环寿命和优异的倍率性能。