Direct synthesis and chemical vapor deposition of 2D carbide and nitride MXenes

Two-dimensional transition-metal carbides and nitrides (MXenes) are a large family of materials actively studied for various applications, especially in the field of energy storage. MXenes are commonly synthesized by etching the layered ternary compounds, called MAX phases. We demonstrate a direct s...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2023-03, Vol.379 (6638), p.1242-1247
Main Authors: Wang, Di, Zhou, Chenkun, Filatov, Alexander S, Cho, Wooje, Lagunas, Francisco, Wang, Mingzhan, Vaikuntanathan, Suriyanarayanan, Liu, Chong, Klie, Robert F, Talapin, Dmitri V
Format: Article
Language:English
Subjects:
Chemical synthesis
Chemical vapor deposition
Energy storage
Etching
Growth conditions
Metal carbides
Metal sheets
MXenes
Nitrides
Titanium
Vapors
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Summary:Two-dimensional transition-metal carbides and nitrides (MXenes) are a large family of materials actively studied for various applications, especially in the field of energy storage. MXenes are commonly synthesized by etching the layered ternary compounds, called MAX phases. We demonstrate a direct synthetic route for scalable and atom-economic synthesis of MXenes, including compounds that have not been synthesized from MAX phases, by the reactions of metals and metal halides with graphite, methane, or nitrogen. The direct synthesis enables chemical vapor deposition growth of MXene carpets and complex spherulite-like morphologies that form through buckling and release of MXene carpet to expose fresh surface for further reaction. The directly synthesized MXenes showed excellent energy storage capacity for lithium-ion intercalation.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.add9204