Universal salt-assisted assembly of MXene from suspension on polymer substrates

Liang Zhao, Lingyi Bi, Jiayue Hu, Guanhui Gao, Danzhen Zhang, Yun Li, Aidan Flynn, Teng Zhang, Ruocun Wang, Xuemei M. Cheng, Ling Liu (), Yury Gogotsi () and Bo Li ()
Additional contact information
Liang Zhao: Villanova University
Lingyi Bi: Drexel University
Jiayue Hu: Temple University
Guanhui Gao: Rice University
Danzhen Zhang: Drexel University
Yun Li: Villanova University
Aidan Flynn: Villanova University
Teng Zhang: Drexel University
Ruocun Wang: Drexel University
Xuemei M. Cheng: Bryn Mawr College
Ling Liu: Temple University
Yury Gogotsi: Drexel University
Bo Li: Villanova University

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Two-dimensional carbides and nitrides, known as MXenes, are promising for water-processable coatings due to their excellent electrical, thermal, and optical properties. However, depositing hydrophilic MXene nanosheets onto inert or hydrophobic polymer surfaces requires plasma treatment or chemical modification. This study demonstrates a universal salt-assisted assembly method that produces ultra-thin, uniform MXene coatings with exceptional mechanical stability and washability on various polymers, including high-performance polymers for extreme temperatures. The salt in the Ti3C2Tx colloidal suspension reduces surface charges, enabling electrostatically hydrophobized MXene deposition on polymers. A library of salts was used to optimize assembly kinetics and coating morphology. A 170 nm MXene coating can reduce radiation temperature by ~200 °C on a 300 °C PEEK substrate, while the coating on Kevlar fabric provides comfort in extreme conditions, including outer space and polar regions.

Date: 2024
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DOI: 10.1038/s41467-024-53840-y

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