Making Recyclable Mobile Phone Batteries a Reality With MXenes battery energystorage 2DMaterials NatureComms ResearchRMIT RMIT
By Hussain AhmedFeb 1 2023Reviewed by Megan Craig, M.Sc. MXenes are a family of two-dimensional transition metal carbides and nitrides with superior intrinsic properties such as high electrical conductivity, optical transparency, good mechanical strength, and thermal stability. However, MXenes are prone to severe oxidative degradation relatively quickly, which leads to a rapid deterioration in their performance and limits their utility in most environments.
MXenes have been found to have high conductivity, making them suitable for use in electronic devices. They also have a high surface area, which can be useful for adsorption and catalysis applications. This causes them to degrade rapidly, limiting their applicability in most practical conditions and when a longer-term operation is sought. Furthermore, once an oxide layer develops on the material's surface, it can only be cleared by powerful acids, which also damage the MXenes.
The formation of oxides, such as titanium dioxide on the surface of the MXene samples, was also analyzed using various characterization techniques, including X-Ray diffraction , scanning electron microscopy , and transmission electron microscopy . Findings and Future Perspective The findings of the current research work have demonstrated a facile and rapid method for recovering and restoring oxidized MXenes. The method involves exposing the MXenes to a hydrazine hydrate solution, effectively reducing the oxide layer on the material's surface.
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