Abstract

Recently a new, large family of two‐dimensional (2D) early transition metal carbides and carbonitrides, called MXenes, was discovered. MXenes are produced by selective etching of the A element from the MAX phases, which are metallically conductive, layered solids connected by strong metallic, ionic, and covalent bonds, such as Ti 2 AlC, Ti 3 AlC 2 , and Ta 4 AlC 3 . MXenes ­combine the metallic conductivity of transition metal carbides with the hydrophilic nature of their hydroxyl or oxygen terminated surfaces. In essence, they behave as “conductive clays”. This article reviews progress—both ­experimental and theoretical—on their synthesis, structure, properties, intercalation, delamination, and potential applications. MXenes are expected to be good candidates for a host of applications. They have already shown promising performance in electrochemical energy storage systems. A detailed outlook for future research on MXenes is also presented.

Keywords

MXenesMaterials scienceCarbideIntercalation (chemistry)MetalMAX phasesIonic bondingNanotechnologyTransition metalGrapheneInorganic chemistryComposite materialIonMetallurgyChemistryOrganic chemistry

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Publication Info

Year
2013
Type
article
Volume
26
Issue
7
Pages
992-1005
Citations
5907
Access
Closed

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Cite This

Michael Naguib, Vadym N. Mochalin, Michel W. Barsoum et al. (2013). 25th Anniversary Article: MXenes: A New Family of Two‐Dimensional Materials. Advanced Materials , 26 (7) , 992-1005. https://doi.org/10.1002/adma.201304138

Identifiers

DOI
10.1002/adma.201304138
PMID
24357390

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Data completeness: 77%