High-performance graphene/sulphur electrodes for flexible Li-ion batteries using the low-temperature spraying method

Handle URI:
http://hdl.handle.net/10754/563968
Title:
High-performance graphene/sulphur electrodes for flexible Li-ion batteries using the low-temperature spraying method
Authors:
Kumar, Pushpendra; Wu, Feng-Yu; Hu, Lung Hao; Ali Abbas, Syed; Ming, Jun ( 0000-0001-9561-5718 ) ; Lin, Chia Nan; Fang, Jason; Chu, Chih Wei; Li, Lain-Jong ( 0000-0002-4059-7783 )
Abstract:
Elementary sulphur (S) has been shown to be an excellent cathode material in energy storage devices such as Li-S batteries owing to its very high capacity. The major challenges associated with the sulphur cathodes are structural degradation, poor cycling performance and instability of the solid-electrolyte interphase caused by the dissolution of polysulfides during cycling. Tremendous efforts made by others have demonstrated that encapsulation of S materials improves their cycling performance. To make this approach practical for large scale applications, the use of low-cost technology and materials has become a crucial and new focus of S-based Li-ion batteries. Herein, we propose to use a low temperature spraying process to fabricate graphene/S electrode material, where the ink is composed of graphene flakes and the micron-sized S particles prepared by grinding of low-cost S powders. The S particles are found to be well hosted by highly conductive graphene flakes and consequently superior cyclability (∼70% capacity retention after 250 cycles), good coulombic efficiency (∼98%) and high capacity (∼1500 mA h g-1) are obtained. The proposed approach does not require high temperature annealing or baking; hence, another great advantage is to make flexible Li-ion batteries. We have also demonstrated two types of flexible batteries using sprayed graphene/S electrodes. © The Royal Society of Chemistry 2015.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Nanoscale
Issue Date:
2015
DOI:
10.1039/c5nr00885a
Type:
Article
ISSN:
20403364
Sponsors:
We acknowledge the support from National Science Council Taiwan, Research Center for Applied Science, Academia Sinica Taiwan, ITRI Taiwan, AFOSR BRI and KAUST Saudi Arabia.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorKumar, Pushpendraen
dc.contributor.authorWu, Feng-Yuen
dc.contributor.authorHu, Lung Haoen
dc.contributor.authorAli Abbas, Syeden
dc.contributor.authorMing, Junen
dc.contributor.authorLin, Chia Nanen
dc.contributor.authorFang, Jasonen
dc.contributor.authorChu, Chih Weien
dc.contributor.authorLi, Lain-Jongen
dc.date.accessioned2015-08-03T12:21:16Zen
dc.date.available2015-08-03T12:21:16Zen
dc.date.issued2015en
dc.identifier.issn20403364en
dc.identifier.doi10.1039/c5nr00885aen
dc.identifier.urihttp://hdl.handle.net/10754/563968en
dc.description.abstractElementary sulphur (S) has been shown to be an excellent cathode material in energy storage devices such as Li-S batteries owing to its very high capacity. The major challenges associated with the sulphur cathodes are structural degradation, poor cycling performance and instability of the solid-electrolyte interphase caused by the dissolution of polysulfides during cycling. Tremendous efforts made by others have demonstrated that encapsulation of S materials improves their cycling performance. To make this approach practical for large scale applications, the use of low-cost technology and materials has become a crucial and new focus of S-based Li-ion batteries. Herein, we propose to use a low temperature spraying process to fabricate graphene/S electrode material, where the ink is composed of graphene flakes and the micron-sized S particles prepared by grinding of low-cost S powders. The S particles are found to be well hosted by highly conductive graphene flakes and consequently superior cyclability (∼70% capacity retention after 250 cycles), good coulombic efficiency (∼98%) and high capacity (∼1500 mA h g-1) are obtained. The proposed approach does not require high temperature annealing or baking; hence, another great advantage is to make flexible Li-ion batteries. We have also demonstrated two types of flexible batteries using sprayed graphene/S electrodes. © The Royal Society of Chemistry 2015.en
dc.description.sponsorshipWe acknowledge the support from National Science Council Taiwan, Research Center for Applied Science, Academia Sinica Taiwan, ITRI Taiwan, AFOSR BRI and KAUST Saudi Arabia.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titleHigh-performance graphene/sulphur electrodes for flexible Li-ion batteries using the low-temperature spraying methoden
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalNanoscaleen
dc.contributor.institutionDepartment of Electrophysics, National Chiao Tung University, Hsinchu, Taiwanen
dc.contributor.institutionResearch Center for Applied Science, Academia Sinica, Taipei, Taiwanen
dc.contributor.institutionSouthern Taiwan University of Science and Technology, Tainan, Taiwanen
dc.contributor.institutionMaterial and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwanen
kaust.authorLi, Lain-Jongen
kaust.authorWu, Feng-Yuen
kaust.authorMing, Junen
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