Abstract
MXene, as a new type of two-dimensional material, has attracted much interest since it was discovered in 2011. However, only few articles discussed the effect of MXene flake size on its electrochemical performance. Here, a sand milling way is explored to produce nano-size MXene and the MILD method is used to prepare micron-size MXene (1 μm) as a comparison. Meanwhile, a mask-assisted interdigital micro-supercapacitors is prepared to explore the dependence of the electrochemical properties of MXene on their flake size. We show that nano-size MXene (200 nm) has a higher ionic conductivity as compared to normal micron-size MXene (1 μm). On the contrary, the larger flake size has higher electrical conductivities. As a result, the capacitance of micron-size MXene is better than nano-size MXene (200 nm) because the electrical conductivities are dominant. This research is helpful for further understanding of the influence of MXene flake size on its electrochemical performance.
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Acknowledgements
This work was supported by the National Innovation Center of Advanced Dyeing and Finishing Technology (ZJ2021A10); the Opening Project of Jiangsu Engineering Research Center of Textile Dyeing and Printing for Energy Conservation, Discharge Reduction and Cleaner Production (ERC) (Q811580722).
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Ye, F., Xu, B., Chen, R. et al. The Influence of Nano- and Micron-size of MXene Flakes on the Electrochemical Performance. Electron. Mater. Lett. 19, 527–533 (2023). https://doi.org/10.1007/s13391-023-00418-3
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DOI: https://doi.org/10.1007/s13391-023-00418-3