Functional MXene Materials: Progress of Their Applications

다국어 초록 (Multilingual Abstract)

Nowadays, two‐dimensional materials have many applications in materials science. As a novel two‐dimensional layered material, MXene possesses distinct structural, electronic, and chemical properties; thus, it has potential applications in many fields, including battery electrodes, energy storage materials, sensors, and catalysts. Up to now, more than 70 MAX phases have been reported. However, in contrast to the variety of MAX phases, the existing MXene family merely includes Ti2C, Ti3C2, (Ti1/2, Nb1/2)2C, (V1/2, Cr1/2)3C2, Nb2C, Ti3CN, Ta4C3, V2C, and Nb4C3. Among these materials, the Ti3C2Tx MXene exhibits prominently high volumetric capacitance, and the rate at which it transports electron is suitable for electrode materials in batteries and supercapacitors. Hence, Ti3C2Tx is commonly utilized as an electrode material in ion batteries such as Li+, Na+, K+, Mg2+, Ca2+, and Al3+ batteries. What is more, Ti2C has the biggest specific surface area among all of these potential MXene phases, and therefore, Ti2C has remarkably high gravimetric hydrogen storage capacities. In addition, Ti2CO2 materials display extremely high activity for CO oxidation, which makes it possible to design catalysts for CO oxidation at low temperatures. Furthermore, Ti3C2Tx with O, OH, and/or F terminations can be used for water purification owing to excellent water permeance, favorable filtration ability, and long‐time operation ability. This review supplies a relatively comprehensive summary of various applications of MXenes over the past few years.
Keen on MXene: MXenes, a new category of two‐dimensional metal carbides, have distinct structural, electronic, and chemical properties. Thus, they may potentially be used in a variety of fields, including as electrode materials for batteries, energy storage materials, sensors, and catalysts. This review provides a comprehensive summary of the various applications of MXenes over the past few years.