Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 8, Issue 6, Pages 3018-3026Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta12834d
Keywords
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Funding
- National Natural Science Foundation of China [21773188, 21972111]
- Fundamental Research Funds for the Central Universities [XDJK2019AA002]
- Postgraduate Tutor Team Building Project [XYDS201911]
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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 to this problem, we provide a composite of cobalt disulfide and carbon nanotubes grown in situ on MXene and a derivative grown out of MXene during the prepared process (named as CoS2/CNTs/TiOxNy) as an anode material, and PFSA-Na membranes as the solid-state electrolyte for SSIBs. The as-suggested SSIBs based on CoS2/CNTs/TiOxNy and PFSA-Na membranes demonstrate promising electrochemical properties under room temperature, which is a significant improvement compared with the high-temperature running SSIBs. Furthermore, the electrochemical mechanism of CoS2/CNTs/TiOxNy in the SSIBs was investigated by in situ Raman and ex situ XPS analyses to understand the reaction mechanism.
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