Mei, Jun and Ayoko, Godwin A. and Hu, Chunfeng and Bell, John M. and Sun, Ziqi (2020) Two-dimensional fluorine-free mesoporous Mo2C MXene via UV-induced selective etching of Mo2Ga2C for energy storage. Sustainable Materials and Technologies, 25:e00156. ISSN 2214-9929
Abstract
As an emerging and important family of two-dimensional (2D) nanomaterials, MXene has demonstrated to be a type of promising electrode materials for energy storage devices. Hazardous fluorine-containing acids are commonly applied in exfoliation synthesis of MXenes, which bring about additional safety and environmental concerns. Herein, we proposed a novel and effective UV-induced selective etching method to fabricate fluorine-free mesoporous Mo2C MXene from Mo2Ga2C bulk ceramic in several hours. The resultant MXene exhibits a distinct 2D sheet-like structure without much contamination of impurity ions. When the as-synthesized Mo2C MXene is explored as potential anode materials for rechargeable batteries, excellent rate capability and cycling stability are achieved for both lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). Furthermore, the assembled flexible Mo2C MXene-based batteries manifested excellent capacity retentions under bending states. Therefore, this Mo2C MXene has great potential for practical energy storage applications. This innovative approach can be further developed for fabricating other MXenes from UV-sensitive precursors.
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| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | Permanent restricted access to Published version in accordance with the copyright policy of the publisher. |
| Faculty/School / Institute/Centre: | No Faculty |
| Faculty/School / Institute/Centre: | No Faculty |
| Date Deposited: | 18 Sep 2020 01:47 |
| Last Modified: | 30 Sep 2020 03:24 |
| Uncontrolled Keywords: | 2D materials; MXene; batteries; Mo2C; non-fluorine etching |
| Fields of Research (2008): | 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified 09 Engineering > 0913 Mechanical Engineering > 091305 Energy Generation, Conversion and Storage Engineering 09 Engineering > 0906 Electrical and Electronic Engineering > 090608 Renewable Power and Energy Systems Engineering (excl. Solar Cells) 10 Technology > 1007 Nanotechnology > 100708 Nanomaterials |
| Identification Number or DOI: | https://doi.org/10.1016/j.susmat.2020.e00156 |
| URI: | http://eprints.usq.edu.au/id/eprint/39379 |
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