Journal
SMARTMAT
Volume 4, Issue 1, Pages -Publisher
WILEY
DOI: 10.1002/smm2.1130
Keywords
composite materials; MXene; MXene-based; supercapacitors
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In 2011, Gogotsi et al. discovered a new type of two-dimensional transition metal carbides and nitrides, called MXenes, which have become a dazzling new star in the energy storage industry. MXenes have high mechanical flexibility, high energy density, and good electrochemical performance, making them suitable for supercapacitor applications. However, the self-stacking of MXene layers results in the loss of electrochemically active sites. Structural optimization and composite doping are effective strategies to enhance the electrochemical performance of MXenes. This review summarizes recent advances in MXene synthesis, fundamental properties, and composite materials, focusing on their electrochemical performance and the challenges and opportunities they face in the energy storage field.
In 2011, Gogotsi et al. discovered a new type of two-dimensional transition metal carbides and nitrides, called MXenes, which have become a dazzling new star in the energy storage industry. MXenes are endowed with a series of fascinating properties due to their unique structures and tunable surface chemical functional groups. The application of MXenes in electrochemical energy storage has attracted special attention, especially showing great potential in supercapacitor applications. Compared with other materials, MXenes have high mechanical flexibility, high energy density, and good electrochemical performance, so they are especially suitable as electrode materials for supercapacitors. However, similar to other 2D materials, due to the strong van der Waals forces, MXene layers inevitably undergo stacking agglomeration, resulting in severe loss of electrochemically active sites. If the self-stacking of MXenes layers can be effectively suppressed, their electrochemical performance will be enhanced. Structural optimization of MXenes and composite doping of MXenes with other materials are two strategies with significant effects. This review summarizes recent advances in MXene synthesis, fundamental properties, and composite materials, focusing on the latest electrochemical performance of MXene-based electrodes/devices, and puts forward the challenges and new opportunities that MXenes face in this emerging energy storage field.
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