Mesoporous MXene powders synthesized by acid induced crumpling and their use as Na-ion battery anodes. Issue 4 (3rd April 2018)

• Record Type: Journal Article
• Authors: Natu, Varun; Clites, Mallory; Pomerantseva, Ekaterina; Barsoum, Michel W.
• Is Part Of: Materials research letters. Volume 6:Issue 4(2018)
• Page Start: 230
• Page End: 235
• Publication Date: 2018-04-03
• Subjects: MXenes -- crumpled nanosheets -- acid-induced crashing -- 3D mesoporous architecture -- sodium-ion battery; Materials science -- Research -- Periodicals; Biomedical materials -- Research -- Periodicals; Composite materials -- Research -- Periodicals; Biomedical materials -- Research; Composite materials -- Research; Materials science -- Research; Periodicals; 620.1105
• DOI: 10.1080/21663831.2018.1434249
• Languages: English
• ISSNs: 2166-3831

Abstract

Abstract : Manipulating the shapes of, otherwise flat, two-dimensional, 2D, flakes is important in many applications. Herein by simply decreasing the pH of a Ti3 C2 Tx MXene colloidal suspension, the 2D nanolayers crash out into crumpled flakes, resulting in randomly oriented powders, with a mesoporous architecture. Electrodes made with the latter showed capacities of 250 mAh g −1 at 20 mA g −1 in sodium-ion batteries. The rate performance, 120 mAh g −1 at 500 mA g −1, was also respectable. This acid-induced, reversible, crumpling approach is facile and scalable and could prove important in electrochemical, biological, catalytic, and environmental MXene-based applications. GRAPHICAL ABSTRACT: IMPACT STATEMENT: By simply decreasing the pH of a Ti3 C2 Tx colloidal suspension, we induce the 2D flakes flocculate into mesoporous crumpled flakes, that we then show can be used as Na-ion battery anodes.