Porous carbon nanocages encapsulated with tin nanoparticles for high performance sodium-ion batteries

Chen, S; Ao, Z; Sun, B; Xie, X; Wang, G

Porous carbon nanocages encapsulated with tin nanoparticles for high performance sodium-ion batteries

Chen, S Ao, Z

Sun, B

Xie, X

Wang, G

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Publication Type:: Journal Article
Citation:: Energy Storage Materials, 2016, 5 pp. 180 - 190
Issue Date:: 2016-10-01

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Field	Value	Language
dc.contributor.author	Chen, S	en_US
dc.contributor.author	Ao, Z https://orcid.org/0000-0003-0333-3727	en_US
dc.contributor.author	Sun, B https://orcid.org/0000-0002-4365-486X	en_US
dc.contributor.author	Xie, X https://orcid.org/0000-0002-8670-8397	en_US
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578	en_US
dc.date.issued	2016-10-01	en_US
dc.identifier.citation	Energy Storage Materials, 2016, 5 pp. 180 - 190	en_US
dc.identifier.uri	http://hdl.handle.net/10453/117042
dc.description.abstract	© 2016 Sodium-ion batteries (SIBs) are recognized as an alternative to lithium ion batteries due to the abundance of sodium and potentially low cost of the whole battery system. One of the major challenges facing SIBs is to develop suitable anode materials with high capacity and long cycling life. Herein, we report the synthesis of porous carbon nanocage-Sn (PCNCs-Sn) nanocomposites as anodes of SIBs, demonstrating a high capacity of 828 mAh g−1 at 40 mA g−1. The electrodes also exhibited good rate capabilities (up to 3C) and superior cycling performances (1000 cycles). Post-mortem analyses verified the efficient volume change restriction by carbon nanocages and the well-preserved porous structure. Theoretical calculations indicated that the pulverization of bare Sn electrodes could be ascribed to strong bonds formed between amorphous carbon and the discharge product (Na15Sn4), which also deteriorated the conductivity. In contrast, the relatively weak interaction between Na15Sn4 and graphitic carbon can maintain superior conductivity and structural stability for better cycling performance.	en_US
dc.relation.ispartof	Energy Storage Materials	en_US
dc.relation.isbasedon	10.1016/j.ensm.2016.07.001	en_US
dc.title	Porous carbon nanocages encapsulated with tin nanoparticles for high performance sodium-ion batteries	en_US
dc.type	Journal Article
utslib.citation.volume	5	en_US
utslib.for	0306 Physical Chemistry (incl. Structural)	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
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	5	en_US

Abstract:

© 2016 Sodium-ion batteries (SIBs) are recognized as an alternative to lithium ion batteries due to the abundance of sodium and potentially low cost of the whole battery system. One of the major challenges facing SIBs is to develop suitable anode materials with high capacity and long cycling life. Herein, we report the synthesis of porous carbon nanocage-Sn (PCNCs-Sn) nanocomposites as anodes of SIBs, demonstrating a high capacity of 828 mAh g−1 at 40 mA g−1. The electrodes also exhibited good rate capabilities (up to 3C) and superior cycling performances (1000 cycles). Post-mortem analyses verified the efficient volume change restriction by carbon nanocages and the well-preserved porous structure. Theoretical calculations indicated that the pulverization of bare Sn electrodes could be ascribed to strong bonds formed between amorphous carbon and the discharge product (Na15Sn4), which also deteriorated the conductivity. In contrast, the relatively weak interaction between Na15Sn4 and graphitic carbon can maintain superior conductivity and structural stability for better cycling performance.

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http://hdl.handle.net/10453/117042