Improving oxidation stability of 2D MXenes: synthesis, storage media, and conditions

Aamir Iqbal, Junpyo Hong, Tae Yun Ko, Chong Min Koo

Research output: Contribution to journalReview articlepeer-review

2 Citations (Scopus)

Abstract

Understanding and preventing oxidative degradation of MXene suspensions is essential for fostering fundamental academic studies and facilitating widespread industrial applications. Owing to their outstanding electrical, electrochemical, optoelectronic, and mechanical properties, MXenes, an emerging class of two-dimensional (2D) nanomaterials, show promising state-of-the-art performances in various applications including electromagnetic interference (EMI) shielding, terahertz shielding, electrochemical energy storage, triboelectric nanogenerators, thermal heaters, light-emitting diodes (LEDs), optoelectronics, and sensors. However, MXene synthesis using harsh chemical etching causes many defects or vacancies on the surface of the synthesized MXene flakes. Defective sites are vulnerable to oxidative degradation reactions with water and/or oxygen, which deteriorate the intrinsic properties of MXenes. In this review, we demonstrate the nature of oxidative degradation of MXenes and highlight the recent advancements in controlling the oxidation kinetics of MXenes with several promising strategic approaches, including careful control of the quality of the parent MAX phase, chemical etching conditions, defect passivation, dispersion medium, storage conditions, and polymer composites.

Original languageEnglish
Article number9
JournalNano Convergence
Volume8
Issue number1
DOIs
Publication statusPublished - 2021 Dec

Keywords

  • Chemical etching
  • Defect passivation
  • MXene
  • Organic dispersion
  • Oxidation kinetics
  • Polymer composite
  • Storage condition
  • Two-dimensional (2D) nanomaterials

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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