Enhanced sulfur utilization in lithium-sulfur batteries by hybrid modified separators

Zhou, L; Li, H; Zhang, Y; Jiang, M; Danilov, DL; Eichel, R-A; Notten, PHL

Enhanced sulfur utilization in lithium-sulfur batteries by hybrid modified separators

Zhou, L Li, H Zhang, Y Jiang, M Danilov, DL Eichel, R-A Notten, PHL

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Materials Today Communications, 2021, 26, pp. 102133
Issue Date:: 2021-03-01

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Field	Value	Language
dc.contributor.author	Zhou, L
dc.contributor.author	Li, H
dc.contributor.author	Zhang, Y
dc.contributor.author	Jiang, M
dc.contributor.author	Danilov, DL
dc.contributor.author	Eichel, R-A
dc.contributor.author	Notten, PHL
dc.date.accessioned	2022-01-31T21:13:32Z
dc.date.available	2022-01-31T21:13:32Z
dc.date.issued	2021-03-01
dc.identifier.citation	Materials Today Communications, 2021, 26, pp. 102133
dc.identifier.issn	2352-4928
dc.identifier.issn	2352-4928
dc.identifier.uri	http://hdl.handle.net/10453/153970
dc.description.abstract	The extraordinary energy density and low cost enable lithium-sulfur (Li-S) batteries to be a promising alternative to traditional energy storage systems. The principal hurdle facing Li-S batteries is the unsatisfactory utilization of sulfur cathodes. The detrimental shuttle issue of polysulfides and the sluggish charge transfer kinetics result in quick capacity degradation of Li-S batteries. An MFLC hybrid material composed of manganese-iron layered double hydroxides (Mn-Fe LDH) and carbon nanotubes (CNT) has been developed. Such heterostructure combines the advantages of effective chemical bonding of Mn-Fe LDH towards polysulfides with the high conductivity of CNT. When modified on a polypropylene (PP) separator, the hybrid material is proven to significantly inhibit the shuttle issue of polysulfides and accelerate their redox reaction kinetics. Li-S batteries with MFLC-modified separators revealed considerably improved electrochemical performance. A high initial capacity of 1138 mA h g−1 and 70 % capacity retention after 200 cycles were achieved at 0.2 C. The enhanced sulfur utilization can be directly evaluated from the discharge voltage plateaus. The results indicate a new solution for the practical application of Li-S batteries and provide a simple approach to determine the efficiency of sulfur utilization.
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Materials Today Communications
dc.relation.isbasedon	10.1016/j.mtcomm.2021.102133
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Enhanced sulfur utilization in lithium-sulfur batteries by hybrid modified separators
dc.type	Journal Article
utslib.citation.volume	26
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
utslib.copyright.status	open_access	*
dc.date.updated	2022-01-31T21:13:28Z
pubs.publication-status	Published
pubs.volume	26

Abstract:

The extraordinary energy density and low cost enable lithium-sulfur (Li-S) batteries to be a promising alternative to traditional energy storage systems. The principal hurdle facing Li-S batteries is the unsatisfactory utilization of sulfur cathodes. The detrimental shuttle issue of polysulfides and the sluggish charge transfer kinetics result in quick capacity degradation of Li-S batteries. An MFLC hybrid material composed of manganese-iron layered double hydroxides (Mn-Fe LDH) and carbon nanotubes (CNT) has been developed. Such heterostructure combines the advantages of effective chemical bonding of Mn-Fe LDH towards polysulfides with the high conductivity of CNT. When modified on a polypropylene (PP) separator, the hybrid material is proven to significantly inhibit the shuttle issue of polysulfides and accelerate their redox reaction kinetics. Li-S batteries with MFLC-modified separators revealed considerably improved electrochemical performance. A high initial capacity of 1138 mA h g−1 and 70 % capacity retention after 200 cycles were achieved at 0.2 C. The enhanced sulfur utilization can be directly evaluated from the discharge voltage plateaus. The results indicate a new solution for the practical application of Li-S batteries and provide a simple approach to determine the efficiency of sulfur utilization.

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http://hdl.handle.net/10453/153970