Roles of Metal Ions in MXene Synthesis, Processing and Applications: A Perspective

With a decade of effort, significant progress has been achieved in the synthesis, processing, and applications of MXenes. Metal ions play many crucial roles, such as in MXene delamination, structure regulation, surface modification, MXene composite construction, and even some unique applications. Th...

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Veröffentlicht in:Advanced science 2022-04, Vol.9 (12), p.e2200296-n/a
Hauptverfasser: Long, Yu, Tao, Ying, Shang, Tongxin, Yang, Haotian, Sun, Zejun, Chen, Wei, Yang, Quan‐Hong
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Sprache:eng
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Zusammenfassung:With a decade of effort, significant progress has been achieved in the synthesis, processing, and applications of MXenes. Metal ions play many crucial roles, such as in MXene delamination, structure regulation, surface modification, MXene composite construction, and even some unique applications. The different roles of metal ions are attributed to their many interactions with MXenes and the unique nature of MXenes, including their layered structure, surface chemistry, and the existence of multi‐valent transition metals. Interactions with metal ions are crucial for the energy storage of MXene electrodes, especially in metal ion batteries and supercapacitors with neutral electrolytes. This review aims to provide a good understanding of the interactions between metal ions and MXenes, including the classification and fundamental chemistry of their interactions, in order to achieve their more effective utilization and rational design. It also provides new perspectives on MXene evolution and exfoliation, which may suggest optimized synthesis strategies. In this respect, the different effects of metal ions on MXene synthesis and processing are clarified, and the corresponding mechanisms are elaborated. Research progress on the roles metal ions have in MXene applications is also introduced. Interactions with metal ions play crucial roles in the development of MXenes. This review discusses in details the fundamental chemistry of these interactions, including intercalation, crosslinking and etching, and presents how these interactions affect MXene synthesis, processing and applications, which yields the approaches for the rational designs, optimized synthesis and potential applications of MXene‐based materials.
ISSN:2198-3844
2198-3844
DOI:10.1002/advs.202200296