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Given the abundance of sodium resources, sodium-ion batteries (SIBs) have been considered as one of the candidates for storing energy on a large scale. However, the slower sodium ion transport in the electrode limits its use. Here, we report a binder free Zn2GeO4-graphene Ni foam integrated anode for Na ion storage. The obtained integrated anode was supported by nickel foam without binder, the Zn2GeO4 exhibits nanotube structure, and the graphene was coating on the Zn2GeO4. The Zn2GeO4 nanorods are able to coalesce with each other to form porous structures. The binder free Zn2GeO4-graphene Ni foam integrated anode electrode delivered a discharge capacity of 427.7 mAh g−1 at 0.1 A g−1 after 200 cycles. And at a high current density of 2 A g−1 a favorable rate capacity of 391.4 mAh g−1 could be achieved, twice that of the Zn2GeO4-graphene powder electrode. The outstanding electrochemical performance can be attributed to the synergistic effect between in situ grown Zn2GeO4 nanorods and graphene sheets, which enhanced the conductivity and stabilized the electrode structure during the cycling process, as well as the improved electrochemical reaction kinetics due to in-situ growth. This work sheds light on the design of Ge-based ternary oxide anodes and provides a promising anode for high performance SIBs. [ABSTRACT FROM AUTHOR]

Heterogeneous interfaces interaction and multiscale nanostructures in two-dimensional (2D) materials hybrids are critically significant for realizing rate capability and long-life cycling performance. However, to strike a balance between minimizing the carbon content and maximizing the heterogeneous interfaces remains a critical challenge in nanoarchitectures for hybrid few-layers MoS2 with various carbonaceous materials. Here we present the ordered macroporous few-layered MoS2/C hybrid nanoarchitectures via a facile scalable in situ hybridization and spatial confinement strategies. Such hybrid strategies can maximize the MoS2 loading and restriction of MoS2 to a ultrasmall reaction. The optimized as-prepared hierarchical MoS2/C hybrids exhibit an initial capacity up to 631.2 mAh g−1 with a high first columbic efficiency of 81.16% for sodium-ion batteries (BILs) at 200 mA g−1. And, the electrodes display a high reversible capacity of 330.4 mAh g−1 with a long cycle life, superior cycling stability and excellent high-rate performance demonstrated rational designed hybrid architecture using as the electrodes in SIBs. This strategy could be proven to be an effective method for stabilizing the cyclability and improving in rechargeable rate performance for SIBs. [ABSTRACT FROM AUTHOR]