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

Title
Improving oxidation stability of 2D MXenes: synthesis, storage media, and conditions
Authors
구종민고태윤아미르 이크발홍준표
Keywords
MXene; oxidation stability; dispersion stability
Issue Date
2021-05
Publisher
Nano Convergence
Citation
VOL 8, NO 9-22
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 fakes. 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.
URI
http://pubs.kist.re.kr/handle/201004/73114
ISSN
2196-5404
Appears in Collections:
KIST Publication > ETC
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