Current studentsExisting staffContact us
 

Electron-state confinement of polysulfides for highly stable sodium-sulfur batteries

Simple item page
dc.contributor.authorYe, C.
dc.contributor.authorJiao, Y.
dc.contributor.authorChao, D.
dc.contributor.authorLing, T.
dc.contributor.authorShan, J.
dc.contributor.authorZhang, B.
dc.contributor.authorGu, Q.
dc.contributor.authorDavey, K.
dc.contributor.authorWang, H.
dc.contributor.authorQiao, S.-Z.
dc.date.issued2020
dc.description.abstractConfinement of polysulfides in sulfur cathodes is pivotal for eliminating the "shuttle effect" in metal-sulfur batteries, which represent promising solutions for large-scale and sustainable energy storage. However, mechanistic exploration and in-depth understanding for the confinement of polysulfides remain limited. Consequently, it is a critical challenge to achieve highly stable metal-sulfur batteries. Here, based on a 2D metal-organic framework (2D MOF), a new mechanism to realize effective confinement of polysulfides is proposed. A combination of in situ synchrotron X-ray diffraction, electrochemical measurements, and theoretical computations reveal that the dynamic electron states of the Ni centers in the 2D MOF enable the interaction between polysulfides and the MOF in the discharge/charge process to be tuned, resulting in both strong adsorption and fast conversion kinetics of polysulfides. The resultant room-temperature sodium-sulfur batteries are amongst the most stable reported so far, thus demonstrating that the new mechanism opens a promising avenue for the development of high-performance metal-sulfur batteries.
dc.description.statementofresponsibilityChao Ye, Yan Jiao, Dongliang Chao, Tao Ling, Jieqiong Shan, Binwei Zhang, Qinfen Gu, Kenneth Davey, Haihui Wang, and Shi-Zhang Qiao
dc.identifier.citationAdvanced Materials, 2020; 32(12):1907557-1-1907557-8
dc.identifier.doi10.1002/adma.201907557
dc.identifier.issn0935-9648
dc.identifier.issn1521-4095
dc.identifier.orcidJiao, Y. [0000-0003-1329-4290]
dc.identifier.orcidChao, D. [0000-0001-7793-0044]
dc.identifier.orcidShan, J. [0000-0003-4308-5027]
dc.identifier.orcidDavey, K. [0000-0002-7623-9320]
dc.identifier.orcidQiao, S.-Z. [0000-0002-1220-1761] [0000-0002-4568-8422]
dc.identifier.urihttp://hdl.handle.net/2440/123643
dc.language.isoen
dc.publisherWiley
dc.relation.granthttp://purl.org/au-research/grants/arc/DP160104866
dc.relation.granthttp://purl.org/au-research/grants/arc/LP160100927
dc.relation.granthttp://purl.org/au-research/grants/arc/FL170100154
dc.rights© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
dc.source.urihttps://doi.org/10.1002/adma.201907557
dc.subject2D materials
dc.subjectconfinement of polysulfides
dc.subjectmetal-organic frameworks
dc.subjectsodium-sulfur batteries
dc.subjectsulfur cathodes
dc.titleElectron-state confinement of polysulfides for highly stable sodium-sulfur batteries
dc.typeJournal article
pubs.publication-statusPublished

Files

Collections

Chemical Engineering publications