The SnS₂ nanoflowers anchored on three dimensional porous graphene were easily constructed with nickel foam (NF) as supported backbone through the dip-coating method followed by one-step controllable hydrothermal growth and mild reduction. The interconnected SnS₂ nanoflowers with cross-linking nanosheets and rich pores assembled to form one layer of continuous network structure, which tightly adhered on the surface of graphene. The porous graphene supported by NF built a conductively integral highway that is preferable for the charge transfer kinetics, while the hierarchical pores from the SnS₂ nanoflowers and NF are particularly beneficial for mitigating the volume expansion and promoting electrolyte penetration. The as-constructed Ni foam/reduced graphene oxide/SnS₂ (NF/RGO/SnS₂) composite exhibited dramatically enhanced reversible capacity, remarkable rate capability, and long-term cycling stabilities without the use of any binders and conductive additives. Especially, NF/RGO/SnS₂ composite remained the specific capacity as high as 561.9 mA h g⁻¹ at the current densities of 1000 mA g⁻¹ after continuous tests for 160 cycles, which is much higher than conventional SnS₂/RGO composite. With the advantages of unique architecture and excellent sodium storage performances, the NF/RGO/SnS₂ composite shows promising application potential in the sodium ion batteries.

通过浸涂法，以泡沫镍（NF）为支撑骨架，可以轻松地构建锚固在三维多孔石墨烯上的SnS ₂纳米花，然后一步控制水热生长并进行轻度还原。互连的SnS ₂纳米花与交联的纳米片和丰富的孔组装在一起，形成一层连续的网络结构，该层紧密地粘附在石墨烯的表面上。由NF支撑的多孔石墨烯建立了一条导电的完整高速公路，这对于电荷转移动力学而言是优选的，而来自SnS ₂的层状孔隙纳米花和NF对减轻体积膨胀和促进电解质渗透特别有益。如此构造的泡沫镍/还原的氧化石墨烯/ SnS ₂（NF / RGO / SnS ₂）复合材料在不使用任何粘合剂和导电添加剂的情况下，显示出可逆容量，显着的倍率性能和长期循环稳定性的显着提高。尤其是，NF / RGO / SnS ₂复合材料在连续测试160次循环后，在1000 mA g ^-1的电流密度下仍保持高达561.9 mA h g ^-1的比容量，远高于传统的SnS ₂/ RGO复合。凭借独特的结构和出色的钠存储性能，NF / RGO / SnS ₂复合材料在钠离子电池中显示出广阔的应用潜力。