Graphene is considered as one of the most promising anode materials for alkali (Li, Na and K) ion batteries in term of large specific surface area and high conductivity, whereas, low initial Coulombic efficiency, poor capacity and fast capacity decay severely block the commercialization process. Here, we designed reduced graphene oxide with three-dimensional interconnected hollow channel architecture (3D IH-rGO) via electrospinning/electrospray and carbonization techniques. Benefiting from the unique 3D interconnected hollow channel architecture, 3D IH-rGO anode exhibits extraordinary lithium storage ability with high initial Coulombic efficiency (74.0%), outstanding reversible capability (1216.0 mAh g^-1 over 500 cycles at 0.5 A g^-1) as well as superior cycle stability (capacity retention of 100% over 1000 cycles). Furthermore, 3D IH-rGO anode maintains good reversible capacities of 249.5 mAh g^-1 and 215.7 mAh g^-1 at 0.2 A g^-1 after 100 cycles in sodium/potassium-ion batteries, respectively. These results manifest that 3D IH-rGO has giant potential in the field of Li/Na/K-ion batteries anodes.¹

就大比表面积和高电导率而言，石墨烯被认为是碱性（Li，Na和K）离子电池最有希望的阳极材料之一，而初始库仑效率低，容量低和容量衰减快严重阻碍了商业化处理。在这里，我们通过电纺丝/电喷雾和碳化技术设计了具有三维互连空心通道结构（3D IH-rGO）的还原氧化石墨烯。从独特的3D受益互连中空通道架构，3D IH-RGO阳极表现出与高的初始库仑效率（74.0％），优秀可逆能力（特别锂吸藏能力1216.0毫安克^-1超过500个循环的0.5 A克^-1）以及出色的循环稳定性（在1000个循环中保持100％的容量）。此外，在钠/钾离子电池中经过100次循环后，3D IH-rGO阳极在0.2 A g ^-1下分别保持249.5 mAh g ^-1和215.7 mAh g ^-1的良好可逆容量。这些结果表明，3D IH-rGO在Li / Na / K离子电池阳极领域具有巨大的潜力。^1个