Two-Dimensional Unilamellar Cation-Deficient Metal Oxide Nanosheet Superlattices for High-Rate Sodium Ion Energy Storage.
Xiong, P
Zhang, X
Zhang, F
Yi, D
Zhang, J
Sun, B
Tian, H
Shanmukaraj, D
Rojo, T
Armand, M
Ma, R
Sasaki, T
Wang, G
- Publisher:
- American Chemical Society
- Publication Type:
- Journal Article
- Citation:
- ACS Nano, 2018, 12, (12), pp. 12337-12346
- Issue Date:
- 2018-11-26
Closed Access
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acsnano.8b06206.pdf | Published version | 5.22 MB |
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Full metadata record
Field | Value | Language |
---|---|---|
dc.contributor.author |
Xiong, P |
|
dc.contributor.author | Zhang, X | |
dc.contributor.author |
Zhang, F |
|
dc.contributor.author | Yi, D | |
dc.contributor.author |
Zhang, J |
|
dc.contributor.author |
Sun, B |
|
dc.contributor.author |
Tian, H |
|
dc.contributor.author | Shanmukaraj, D | |
dc.contributor.author | Rojo, T | |
dc.contributor.author | Armand, M | |
dc.contributor.author | Ma, R | |
dc.contributor.author | Sasaki, T | |
dc.contributor.author |
Wang, G |
|
dc.date.accessioned | 2021-07-29T09:35:53Z | |
dc.date.available | 2021-07-29T09:35:53Z | |
dc.date.issued | 2018-11-26 | |
dc.identifier.citation | ACS Nano, 2018, 12, (12), pp. 12337-12346 | |
dc.identifier.issn | 1936-0851 | |
dc.identifier.issn | 1936-086X | |
dc.identifier.uri | http://hdl.handle.net/10453/149985 | |
dc.description.abstract | Cation-deficient two-dimensional (2D) materials, especially atomically thin nanosheets, are highly promising electrode materials for electrochemical energy storage that undergo metal ion insertion reactions, yet they have rarely been achieved thus far. Here, we report a Ti-deficient 2D unilamellar lepidocrocite-type titanium oxide (Ti0.87O2) nanosheet superlattice for sodium storage. The superlattice composed of alternately restacked defective Ti0.87O2 and nitrogen-doped graphene monolayers exhibits an outstanding capacity of ∼490 mA h g-1 at 0.1 A g-1, an ultralong cycle life of more than 10000 cycles with ∼0.00058% capacity decay per cycle, and especially superior low-temperature performance (100 mA h g-1 at 12.8 A g-1 and -5 °C), presenting the best reported performance to date. A reversible Na+ ion intercalation mechanism without phase and structural change is verified by first-principles calculations and kinetics analysis. These results herald a promising strategy to utilize defective 2D materials for advanced energy storage applications. | |
dc.format | Print-Electronic | |
dc.language | eng | |
dc.publisher | American Chemical Society | |
dc.relation | http://purl.org/au-research/grants/arc/DP160104340 | |
dc.relation | http://purl.org/au-research/grants/arc/DP170100436 | |
dc.relation.ispartof | ACS Nano | |
dc.relation.isbasedon | 10.1021/acsnano.8b06206 | |
dc.rights | info:eu-repo/semantics/closedAccess | |
dc.subject.classification | Nanoscience & Nanotechnology | |
dc.title | Two-Dimensional Unilamellar Cation-Deficient Metal Oxide Nanosheet Superlattices for High-Rate Sodium Ion Energy Storage. | |
dc.type | Journal Article | |
utslib.citation.volume | 12 | |
utslib.location.activity | United States | |
pubs.organisational-group | /University of Technology Sydney | |
pubs.organisational-group | /University of Technology Sydney/Faculty of Engineering and Information Technology | |
pubs.organisational-group | /University of Technology Sydney/Faculty of Science | |
pubs.organisational-group | /University of Technology Sydney/Students | |
pubs.organisational-group | /University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences | |
pubs.organisational-group | /University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology | |
utslib.copyright.status | closed_access | * |
pubs.consider-herdc | false | |
dc.date.updated | 2021-07-29T09:35:50Z | |
pubs.issue | 12 | |
pubs.publication-status | Published | |
pubs.volume | 12 | |
utslib.citation.issue | 12 |
Abstract:
Cation-deficient two-dimensional (2D) materials, especially atomically thin nanosheets, are highly promising electrode materials for electrochemical energy storage that undergo metal ion insertion reactions, yet they have rarely been achieved thus far. Here, we report a Ti-deficient 2D unilamellar lepidocrocite-type titanium oxide (Ti0.87O2) nanosheet superlattice for sodium storage. The superlattice composed of alternately restacked defective Ti0.87O2 and nitrogen-doped graphene monolayers exhibits an outstanding capacity of ∼490 mA h g-1 at 0.1 A g-1, an ultralong cycle life of more than 10000 cycles with ∼0.00058% capacity decay per cycle, and especially superior low-temperature performance (100 mA h g-1 at 12.8 A g-1 and -5 °C), presenting the best reported performance to date. A reversible Na+ ion intercalation mechanism without phase and structural change is verified by first-principles calculations and kinetics analysis. These results herald a promising strategy to utilize defective 2D materials for advanced energy storage applications.
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