Development of 2D MXene for Energy Storage

Abstract

The recently discovered large-scale two-dimensional (2D) early transition metal carbides and carbonitrides have captured people's attention as hot topics, called MXenes. MXene is a two-dimensional layered solid, linked by strong metals, ions and covalent bonds, e.g. Ti2AlC, Ti3AlC2 and Ta4AlC3, usually by selectively etching the A element from the MAX phase to produce MXene. MXene has a an array of applications in all aspects cause its outstanding electrical conductivity, excellent specific surface area, good hydrophilicity and stability. In this article, the experimental and theoretical developments are reviewed in their synthesis, physicochemical properties and potential applications. MXene is expected to be applied in electrochemical energy storage and also provides current applications in batteries and super capacitor.