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

• 成果类型: Article
• 署名作者: Wang, Di; Zhou, Chenkun; Filatov, Alexander S.; Cho, Wooje; Lagunas, Francisco; Wang, Mingzhan; Vaikuntanathan, Suriyanarayanan; Liu, Chong; Klie, Robert F.; Talapin, Dmitri V.
• 署名单位: University of Chicago; University of Chicago; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; University of Chicago; United States Department of Energy (DOE); Argonne National Laboratory
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-9477
• DOI: 10.1126/science.add9204
• 发表日期: 2023-03-24
• 页码: 1242-1247
• 关键词: titanium-carbide; electronic-properties; energy-storage; metal carbides

摘要

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.