Squalene-derived sulfur-rich copolymer@ 3D graphene-carbon nanotube network cathode for high-performance lithium-sulfur batteries

Sahu, TS; Choi, S; Jaumaux, P; Zhang, J; Wang, C; Zhou, D; Wang, G

Squalene-derived sulfur-rich copolymer@ 3D graphene-carbon nanotube network cathode for high-performance lithium-sulfur batteries

Sahu, TS Choi, S Jaumaux, P Zhang, J

Wang, C Zhou, D

Wang, G

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Publication Type:: Journal Article
Citation:: Polyhedron, 2019, 162 pp. 147 - 154
Issue Date:: 2019-04-01

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Field	Value	Language
dc.contributor.author	Sahu, TS	en_US
dc.contributor.author	Choi, S	en_US
dc.contributor.author	Jaumaux, P	en_US
dc.contributor.author	Zhang, J https://orcid.org/0000-0001-5476-0134	en_US
dc.contributor.author	Wang, C	en_US
dc.contributor.author	Zhou, D https://orcid.org/0000-0002-2578-7124	en_US
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578	en_US
dc.date.issued	2019-04-01	en_US
dc.identifier.citation	Polyhedron, 2019, 162 pp. 147 - 154	en_US
dc.identifier.issn	0277-5387	en_US
dc.identifier.uri	http://hdl.handle.net/10453/136524
dc.description.abstract	© 2019 Elsevier Ltd Lithium-sulfur (Li-S) batteries with high theoretical energy density and low cost are considered a promising energy storage system. However, great challenges still remain in achieving high sulfur loading and long cycle life. Herein we report a well-designed sulfur-rich copolymer@ 3D graphene-carbon nanotubes (G-CNT) network cathode for high-performance Li-S batteries. The sulfur-rich copolymer (87.29% sulfur) synthesised by inverse vulcanization between two eco-friendly sources, sulfur and squalene, can greatly suppress the dissolution of sulfur and polusulfides due to the chemical confinement from the crosslinking of polysulfur chains with the squalene molecules. The interlinked Sp2 G-CNT network can not only further enhance the polysulfide entrapment capability, but also provide the composite with an 3D electrical conductive path as well as an eminent mechanical resilience towards the huge volume change of sulfur. The as-developed cathode can deliver a high specific capacity of 1265 mAh g−1 at 0.2C with excellent rate performance and cycling stability (782 mAh g−1 at after 300 cycles at 1C).	en_US
dc.relation.ispartof	Polyhedron	en_US
dc.relation.isbasedon	10.1016/j.poly.2019.01.068	en_US
dc.subject.classification	Inorganic & Nuclear Chemistry	en_US
dc.title	Squalene-derived sulfur-rich copolymer@ 3D graphene-carbon nanotube network cathode for high-performance lithium-sulfur batteries	en_US
dc.type	Journal Article
utslib.citation.volume	162	en_US
utslib.for	1007 Nanotechnology	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
utslib.for	0302 Inorganic Chemistry	en_US
utslib.for	0306 Physical Chemistry (incl. Structural)	en_US
utslib.for	0399 Other Chemical Sciences	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	162	en_US

Abstract:

© 2019 Elsevier Ltd Lithium-sulfur (Li-S) batteries with high theoretical energy density and low cost are considered a promising energy storage system. However, great challenges still remain in achieving high sulfur loading and long cycle life. Herein we report a well-designed sulfur-rich copolymer@ 3D graphene-carbon nanotubes (G-CNT) network cathode for high-performance Li-S batteries. The sulfur-rich copolymer (87.29% sulfur) synthesised by inverse vulcanization between two eco-friendly sources, sulfur and squalene, can greatly suppress the dissolution of sulfur and polusulfides due to the chemical confinement from the crosslinking of polysulfur chains with the squalene molecules. The interlinked Sp2 G-CNT network can not only further enhance the polysulfide entrapment capability, but also provide the composite with an 3D electrical conductive path as well as an eminent mechanical resilience towards the huge volume change of sulfur. The as-developed cathode can deliver a high specific capacity of 1265 mAh g−1 at 0.2C with excellent rate performance and cycling stability (782 mAh g−1 at after 300 cycles at 1C).

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http://hdl.handle.net/10453/136524