WO <inf>3</inf> nanolayer coated 3D-graphene/sulfur composites for high performance lithium/sulfur batteries

Choi, S; Seo, DH; Kaiser, MR; Zhang, C; Van Der Laan, T; Han, ZJ; Bendavid, A; Guo, X; Yick, S; Murdock, AT; Su, D; Lee, BR; Du, A; Dou, SX; Wang, G

WO <inf>3</inf> nanolayer coated 3D-graphene/sulfur composites for high performance lithium/sulfur batteries

Choi, S Seo, DH Kaiser, MR Zhang, C Van Der Laan, T Han, ZJ Bendavid, A Guo, X

Yick, S Murdock, AT Su, D

Lee, BR Du, A Dou, SX Wang, G

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Publication Type:: Journal Article
Citation:: Journal of Materials Chemistry A, 2019, 7 (9), pp. 4596 - 4603
Issue Date:: 2019-01-01

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Field	Value	Language
dc.contributor.author	Choi, S	en_US
dc.contributor.author	Seo, DH	en_US
dc.contributor.author	Kaiser, MR	en_US
dc.contributor.author	Zhang, C	en_US
dc.contributor.author	Van Der Laan, T	en_US
dc.contributor.author	Han, ZJ	en_US
dc.contributor.author	Bendavid, A	en_US
dc.contributor.author	Guo, X https://orcid.org/0000-0001-7771-0463	en_US
dc.contributor.author	Yick, S	en_US
dc.contributor.author	Murdock, AT	en_US
dc.contributor.author	Su, D https://orcid.org/0000-0002-3972-8205	en_US
dc.contributor.author	Lee, BR	en_US
dc.contributor.author	Du, A	en_US
dc.contributor.author	Dou, SX	en_US
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578	en_US
dc.date.issued	2019-01-01	en_US
dc.identifier.citation	Journal of Materials Chemistry A, 2019, 7 (9), pp. 4596 - 4603	en_US
dc.identifier.issn	2050-7488	en_US
dc.identifier.uri	http://hdl.handle.net/10453/136655
dc.description.abstract	© 2019 The Royal Society of Chemistry. The lithium-sulfur (Li-S) system is one of the most promising rechargeable battery systems for portable electronics and electrification of vehicles due to a high theoretical capacity and energy density, as well as the low cost and availability of non-toxic sulfur. Polysulfide dissolution however hinders cycling performance and is the main limitation to the stability of the Li-S system. Here, we tackle this challenge by synthesizing 3D-graphene foam from soybean oil through a thermal chemical vapor deposition (CVD) process, which is subsequently loaded with sulfur to form a 3D-graphene-sulfur composite (denoted as S@G composite). The synthesized S@G composite shows high initial discharge capacity (∼1300 mA h g -1 at 0.8 A g -1 ) and capacity retention (∼80% after 200 cycles). Furthermore, a thin layer (∼100 nm) of tungsten oxide (WO 3 ) on the S@G composite dramatically improves the cycling performance of the Li-S system with an initial capacity of 1425 mA h g -1 and approximately 95% capacity retention after 500 cycles. The analysis and theoretical calculation results prove that the novel material and approach can enhance the electrochemical performance of rechargeable Li-S batteries and shed light on developing high-performance energy storage devices for a variety of applications.	en_US
dc.relation.ispartof	Journal of Materials Chemistry A	en_US
dc.relation.isbasedon	10.1039/c8ta11646f	en_US
dc.title	WO <inf>3</inf> nanolayer coated 3D-graphene/sulfur composites for high performance lithium/sulfur batteries	en_US
dc.type	Journal Article
utslib.citation.volume	9	en_US
utslib.citation.volume	7	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	0915 Interdisciplinary 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.issue	9	en_US
pubs.publication-status	Published	en_US
pubs.volume	7	en_US

Abstract:

© 2019 The Royal Society of Chemistry. The lithium-sulfur (Li-S) system is one of the most promising rechargeable battery systems for portable electronics and electrification of vehicles due to a high theoretical capacity and energy density, as well as the low cost and availability of non-toxic sulfur. Polysulfide dissolution however hinders cycling performance and is the main limitation to the stability of the Li-S system. Here, we tackle this challenge by synthesizing 3D-graphene foam from soybean oil through a thermal chemical vapor deposition (CVD) process, which is subsequently loaded with sulfur to form a 3D-graphene-sulfur composite (denoted as S@G composite). The synthesized S@G composite shows high initial discharge capacity (∼1300 mA h g -1 at 0.8 A g -1 ) and capacity retention (∼80% after 200 cycles). Furthermore, a thin layer (∼100 nm) of tungsten oxide (WO 3 ) on the S@G composite dramatically improves the cycling performance of the Li-S system with an initial capacity of 1425 mA h g -1 and approximately 95% capacity retention after 500 cycles. The analysis and theoretical calculation results prove that the novel material and approach can enhance the electrochemical performance of rechargeable Li-S batteries and shed light on developing high-performance energy storage devices for a variety of applications.

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http://hdl.handle.net/10453/136655