MXene derived three-dimensional carbon nanotubes network encapsulate CoS2 nanoparticles as anode material for solid-state sodium-ion batteries
Solid state sodium-ion batteries (SSIBs) are promising energy storage devices due to the advanced safety and abundant natural sodium sources. However, the developments of SSIBs are seriously limited by the shortage of choice for both solid state electrolytes and anode materials. To cater for this problem, we provide a composite of cobalt disulfide and carbon nanotubes in suit growth on MXene and a derivative grow out of MXene during the prepared process (named as CoS2/CNTs/TiOxNy) as anode material, and PFSA-Na membranes as solid-state electrolyte for SSIBs. The as-suggested SSIBs based on CoS2/CNTs/TiOxNy and PFSA-Na membranes demonstrat promising electrochemical properties at room temperature, which is a significant improvement compared with the high-temperature running SSIBs. Furthermore, the electrochemical mechanism of CoS2/CNTs/TiOxNy in SSIBs is investigated by in-situ Raman and ex-situ XPS analysis to understand the reaction mechanism.
- This article is part of the themed collection: Journal of Materials Chemistry A HOT Papers