Sreedhara, M B and Gope, Subhra and Vishal, Badri and Datta, Ranjan and Bhattacharyya, Aninda J and Rao, C N R (2018) Atomic layer deposition of crystalline epitaxial MoS2 nanowall networks exhibiting superior performance in thin-film rechargeable Na-ion batteries. In: JOURNAL OF MATERIALS CHEMISTRY A, 6 (5). pp. 2302-2310.
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Abstract
We have grown ultrathin crystalline epitaxial thin films of MoS2 on c-sapphire by employing atomic layer deposition, without the need for post-annealing. The films have been characterized by using various microscopic and spectroscopic techniques. The crystallographic epitaxial relationships between the films and the substrate are < 01-10 > Al2O3 parallel to < 11-20 > MoS2 and < 0001 > Al2O3 parallel to < 0001 > MoS2. Interestingly, the films show a high density of nanowalls and exhibit a high surface to volume ratio. The high surface area of the nanowall network results in excellent electrochemical characteristics as demonstrated by the performance of the Na-ion battery with MoS2 as the active electrode. The battery exhibits high capacity, remarkable stability, cyclability and high rate capability over a wide range of operating currents, even in the absence of conducting and binder additives. The MoS2 Li-ion battery also exhibits similar features.
| Item Type: | Journal Article |
|---|---|
| Publication: | JOURNAL OF MATERIALS CHEMISTRY A |
| Additional Information: | Copy right for this article belong to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND |
| Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit |
| Date Deposited: | 02 Mar 2018 14:56 |
| Last Modified: | 02 Mar 2018 14:56 |
| URI: | http://eprints.iisc.ac.in/id/eprint/59040 |
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