A research group led by Prof. WU Zhong-Shuai from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences was invited to review the recent progress of MXene based nanostructures for high performance metal ion batteries (MIBs), and share new insights on existing challenges and opportunities for designing high-performance MXene based electrodes for various MIBs. This review was published in Advanced Functional Materials.
Schematic of MXene-based nanostructures for various MIBs. (Imaged by DONG Yanfeng)
MXenes, a large family of two dimensional transition metal carbides or carbonitrides, possessing exceptional conductivity in the crystal core and ample functional groups (e.g., -OH, -F, -O) on their surface, low energy barriers for metal ion diffusion, and large interlayer spaces for ion intercalation, are opening various intriguing opportunities to construct advanced MXene based nanostructures for different-type MIBs.
However, there is still lacking of a comprehensive and timely review of MXene based MIBs in both lithium ion batteries (LIBs) and non-lithium ion batteries (e.g., Na+, K+, Zn2+, Mg2+, Ca2+), through effective design principles for the construction of high-performance MXene based electrodes.
This review summarized the recent advances of MXene based nanostructures for high-performance MIBs from LIBs to non-LIBs, in which the unique roles of MXenes as active materials, conductive substrates, and even current collectors were highlighted.
Further, the loaded model, encapsulated model and sandwiched model were detailly clarified for MXene based hybrids with different dimensional (0D, 1D, and 2D) active materials for various MIBs, and each structural model was well exampled for different MIBs with special emphasis of synergistic effects and strong interaction interfaces between MXene and active materials.
Finally, the existing challenges and perspectives of MXene based nanostructures were briefly discussed for MIBs.
This work was supported by National Natural Science Foundation of China, National Key R&D Program of China, Natural Science Foundation of Liaoning Province, Dalian National Laboratory for Clean Energy of CAS, etc. (Text by DONG Yanfeng,HOU Xiaocheng)