MXene encapsulated titanium oxide nanospheres for ultra-stable and fast sodium storage

Guo, X; Zhang, J; Song, J; Wu, W; Liu, H; Wang, G

MXene encapsulated titanium oxide nanospheres for ultra-stable and fast sodium storage

Guo, X

Zhang, J

Song, J

Wu, W

Liu, H

Wang, G

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Publication Type:: Journal Article
Citation:: Energy Storage Materials, 2018, 14 pp. 306 - 313
Issue Date:: 2018-09-01

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Field	Value	Language
dc.contributor.author	Guo, X https://orcid.org/0000-0001-7771-0463	en_US
dc.contributor.author	Zhang, J https://orcid.org/0000-0001-5476-0134	en_US
dc.contributor.author	Song, J https://orcid.org/0000-0001-6515-5829	en_US
dc.contributor.author	Wu, W https://orcid.org/0000-0002-3601-9294	en_US
dc.contributor.author	Liu, H https://orcid.org/0000-0003-0266-9472	en_US
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578	en_US
dc.date.issued	2018-09-01	en_US
dc.identifier.citation	Energy Storage Materials, 2018, 14 pp. 306 - 313	en_US
dc.identifier.uri	http://hdl.handle.net/10453/130732
dc.description.abstract	© 2018 Sodium-ion batteries with high power density present tremendous potential for large-scale energy storage applications. However, it remains a big challenge to develop suitable anode materials for ultrafast and highly reversible sodium ion storage. Herein, for the first time, we report a novel strategy to fabricate highly conductive MXene Ti3C2Tx encapsulated titanium oxide spheres (TiO2@Ti3C2Tx) as an excellent anode material for sodium-ion batteries. The MXene layers significantly improve the electronic conductivity of the whole electrode and protect the structural integrity of the TiO2 spheres from electrochemical pulverization, which hence contributes to the formation of a stable solid-electrolyte interface. Meanwhile, the pseudocapacitance of the as-fabricated TiO2@Ti3C2Tx composites enables high-rate capability and long cycle life in sodium-ion batteries. As a result, the hybrid electrode delivers a high reversible capacity of 116 mAh g-1 at 960 mA g-1 up to 5000 cycles. By coupling with a NaCrO2 cathode, a prototype Na-ion full cell achieved a capacity of 103.4 mAh g-1 at 960 mA g-1 and an excellent cycling performance with 73.5% capacity retention after 1000 cycles.	en_US
dc.relation	http://purl.org/au-research/grants/arc/DE140100619
dc.relation	http://purl.org/au-research/grants/arc/DP170100436
dc.relation	http://purl.org/au-research/grants/arc/DP180100077
dc.relation.ispartof	Energy Storage Materials	en_US
dc.relation.isbasedon	10.1016/j.ensm.2018.05.010	en_US
dc.title	MXene encapsulated titanium oxide nanospheres for ultra-stable and fast sodium storage	en_US
dc.type	Journal Article
utslib.citation.volume	14	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
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.publication-status	Published	en_US
pubs.volume	14	en_US

Abstract:

© 2018 Sodium-ion batteries with high power density present tremendous potential for large-scale energy storage applications. However, it remains a big challenge to develop suitable anode materials for ultrafast and highly reversible sodium ion storage. Herein, for the first time, we report a novel strategy to fabricate highly conductive MXene Ti3C2Tx encapsulated titanium oxide spheres (TiO2@Ti3C2Tx) as an excellent anode material for sodium-ion batteries. The MXene layers significantly improve the electronic conductivity of the whole electrode and protect the structural integrity of the TiO2 spheres from electrochemical pulverization, which hence contributes to the formation of a stable solid-electrolyte interface. Meanwhile, the pseudocapacitance of the as-fabricated TiO2@Ti3C2Tx composites enables high-rate capability and long cycle life in sodium-ion batteries. As a result, the hybrid electrode delivers a high reversible capacity of 116 mAh g-1 at 960 mA g-1 up to 5000 cycles. By coupling with a NaCrO2 cathode, a prototype Na-ion full cell achieved a capacity of 103.4 mAh g-1 at 960 mA g-1 and an excellent cycling performance with 73.5% capacity retention after 1000 cycles.

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http://hdl.handle.net/10453/130732