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dc.contributor.authorKumar, Pushpendraen_US
dc.contributor.authorWu, Feng-Yuen_US
dc.contributor.authorHu, Lung-Haoen_US
dc.contributor.authorAbbas, Syed Alien_US
dc.contributor.authorMing, Junen_US
dc.contributor.authorLin, Chia-Nanen_US
dc.contributor.authorFang, Jasonen_US
dc.contributor.authorChu, Chih-Weien_US
dc.contributor.authorLi, Lain-Jongen_US
dc.date.accessioned2015-07-21T08:28:59Z-
dc.date.available2015-07-21T08:28:59Z-
dc.date.issued2015-01-01en_US
dc.identifier.issn2040-3364en_US
dc.identifier.urihttp://dx.doi.org/10.1039/c5nr00885aen_US
dc.identifier.urihttp://hdl.handle.net/11536/124724-
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 (similar to 70% capacity retention after 250 cycles), good coulombic efficiency (similar to 98%) and high capacity (similar to 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.en_US
dc.language.isoen_USen_US
dc.titleHigh-performance graphene/sulphur electrodes for flexible Li-ion batteries using the low-temperature spraying methoden_US
dc.typeArticleen_US
dc.identifier.doi10.1039/c5nr00885aen_US
dc.identifier.journalNANOSCALEen_US
dc.citation.issue17en_US
dc.citation.spage8093en_US
dc.citation.epage8100en_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.identifier.wosnumberWOS:000353981700069en_US
dc.citation.woscount0en_US
Appears in Collections:Articles