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Abstract

Herein we report on Li insertion into a new two-dimensional (2-D) layered Ti2C-based material (MXene) with an oxidized surface, formed by etching Al from Ti2AlC in HF at room temperature. Nitrogen sorption of treated powders showed desorption hysteresis consistent with the presence of slit-like pores. At 23 m(2) g(-1), the specific surface area was an order of magnitude higher than untreated Ti2AlC. Cyclic voltammetry exhibited lithiation and delithiation peaks at 1.6 V and 2 V vs. Li+/Li, respectively. At C/25, the steady state capacity was 225 mAh g(-1); at 1C, it was 110 mAh g(-1) after 80 cycles; at 3C, it was 80 mAh g(-1) after 120 cycles: at 10C, it was 70 mAh g(-1) after 200 cycles. Since Ti2C is a member of the MXene family - where M is an early transition metal and X is C and/or N - that to date includes Ti3C2,Ta4C3,TiNbC, and (V-0.5,Cr-0.5)(3)C-2, our results suggest that MXenes are promising as anode materials for Li-ion batteries.
MXene: a promising transition metal carbide anode for
lithium-ion batteries
Michael Naguib, J´er´emy Come, Boris Dyatkin, Volker Presser, Pierre-Louis
Taberna, Patrice Simon, Michel W. Barsoum, Yury Gogotsi
To cite this version:
Michael Naguib, J´er´emy Come, Boris Dyatkin, Volker Presser, Pierre-Louis Taberna, et al..
MXene: a promising transition metal carbide anode for lithium-ion batteries. Electrochemistry
Communications, Elsevier, 2012, vol. 16, pp. 61-64. <10.1016/j.elecom.2012.01.002>.<hal-
00864984>
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Eprints ID : 8731
To link to this article : DOI:10.1016/j.elecom.2012.01.002
URL : http://dx.doi.org/10.1016/j.elecom.2012.01.002
To cite this version : Naguib, Michael and Come, Jérémy and Dyatkin,
Boris and Presser, Volker and Taberna, Pierre-Louis and Simon,
Patrice and Barsoum, Michel W. and Gogotsi, Yury. MXene: a promising
transition metal carbide anode for lithium-ion batteries. (2012) Electrochemistry
Communications, vol. 16 (n ° 1). pp. 61-64. ISSN 1388-2481
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... [1][2][3] Especially for A═Al or Ga, 2D transition metal carbides, coined as MXenes, [4,5] can be obtained by selectively etching away the A-layer of the MAX phase. [6,7] The 2D MXene has demonstrated the rapidly growing application in energy storage (supercapacitors, [8][9][10] ion storage, [11][12][13] hydrogen storage, [14,15] etc.), electrode material for batteries (sodium-ion batteries, [16,17] lithium-ion batteries, [18,19] etc.), catalysts, [20,21] sensors, [22,23] due to which more attentions are paid to exploring the novel exfoliable MAX phase. ...
Article
Full-text available
V4/3Zr2/3AlC, as the only V‐based i‐MAX phase reported up to now, cannot be delaminated using the conventional aqueous etching strategy. In the present work, by alloying W, the structure evolves from the C2/c monoclinic one in V4/3Zr2/3AlC to the nanoscale co‐existence of C2/c monoclinic and Cmcm orthorhombic ones in (V0.2W0.8)4/3Zr2/3AlC i‐MAX with the maximum W content. Especially, at the intermediate composition of (V0.6W0.4)4/3Zr2/3AlC, the long‐period stacking ordered (LPSO) structure is first observed. Feasible delamination has been realized and the resultant Zr‐free (V1−xWx)1.33C i‐MXene can be obtained for x ≥ 0.6, suggesting that W‐alloying is contributive to the delamination. A specific capacitance of 336.1 F g⁻¹ at the current density of 0.5 A g⁻¹ can be obtained in the (V0.4W0.6)1.33C i‐MXene under the extended voltage window of 1 V and highly stable performance for 10 000 charge/discharge cycles by compositing with the shell‐structured activated porous carbon. Besides, biological experiments have verified that (V0.4W0.6)1.33C i‐MXene significantly inhibits the growth, proliferation, and migration of hepatocellular carcinoma cells by inducing apoptosis, and regulates metabolism and immune response, possessing substantial targeted antitumor potential.
... Naguib et al. embedded Li + into alkaline MXene during the electrostatic process to prepare 2D Ti 3 C 2 lithium-ion anode material. This electrode showed a specific capacitance of 225 mAh·g -1 at 0.04 C [120], and at 3 C, its stable capacity was about 80 mAh·g -1 . On the path of exploring how to further optimize the performance of MXene-based lithium-ion battery electrodes, modifying MXene with metal ions has become a new research hotspot. ...
Chapter
Full-text available
Energy-storage systems are attracting much attention owing to their unique properties enabling applications in electronic and electric devices. In recent years, MXenes are relatively 2D materials that have emerged as promising candidates to fulfill the requirements for high-power applications. They boost device-level electrochemical performance in terms of their chemical composition, material structure, surface termination groups, enabling efficient charge storage and fast ion diffusion. Herein, we present a review to discuss thoroughly MAX phases synthesis and MXenes properties that recommend them as potential nanomaterials towards applications in energy science. Recent researches on 2D MXene-based nanostructures have been highlighted for improving storage and conversion performances in renewable energy technologies. The perspectives and future challenges of MXenes-based materials in this booming field are addressed. Finally, we will promote the further development within the scientific community intending to design of intriguing 2D MXenes-based electrodes used for energy storage.
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