Covalent Confinement of Sulfur Copolymers onto Graphene Sheets Affords Ultrastable Lithium-Sulfur Batteries with Fast Cathode Kinetics
DC Field | Value | Language |
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dc.contributor.author | Junpeng Ma | - |
dc.contributor.author | Jingbiao Fan | - |
dc.contributor.author | Shang Chen | - |
dc.contributor.author | Xinyue Yang | - |
dc.contributor.author | Kwun Nam Hui | - |
dc.contributor.author | Hongwen Zhang | - |
dc.contributor.author | Christopher W. Bielawski | - |
dc.contributor.author | Jianxin Geng | - |
dc.date.available | 2019-07-19T05:37:38Z | - |
dc.date.created | 2019-05-29 | - |
dc.date.issued | 2019-04 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://pr.ibs.re.kr/handle/8788114/5865 | - |
dc.description.abstract | Copyright © 2019 American Chemical Society. Lithium-sulfur (Li-S) batteries have received significant attention due to the high theoretical specific capacity of sulfur (1675 mA h g -1 ). However, the practical applications are often handicapped by sluggish electrochemical kinetics and the "shuttle effect" of electrochemical intermediate polysulfides. Herein, we propose an in-situ copolymerization strategy for covalently confining a sulfur-containing copolymer onto reduced graphene oxide (RGO) to overcome the aforementioned challenges. The copolymerization was performed by heating elemental sulfur and isopropenylphenyl-functionalized RGO to afford a sulfur-containing copolymer, that is, RGO-g-poly(S-r-IDBI), which is featured by a high sulfur content and uniform distribution of the poly(S-r-IDBI) on RGO sheets. The covalent confinement of poly(S-r-IDBI) onto RGO sheets not only enhances the Li + diffusion coefficients by nearly 1 order of magnitude, but also improves the mechanical properties of the cathodes and suppresses the shuttle effect of polysulfides. As a result, the RGO-g-poly(S-r-IDBI) cathode exhibits an enhanced sulfur utilization rate (10% higher than that of an elemental sulfur cathode at 0.1C), an improved rate capacity (688 mA h g -1 for the RGO-g-poly(S-r-IDBI) cathode vs 400 mA h g -1 for an elemental sulfur cathode at 1C), and a high cycling stability (a capacity decay of 0.021% per cycle, less than one-tenth of that measured for an elemental sulfur cathode). © 2019 American Chemical Society | - |
dc.description.uri | 1 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | cathode kinetics | - |
dc.subject | covalent binding | - |
dc.subject | graphene | - |
dc.subject | lithium-sulfur batteries | - |
dc.subject | sulfur copolymers | - |
dc.title | Covalent Confinement of Sulfur Copolymers onto Graphene Sheets Affords Ultrastable Lithium-Sulfur Batteries with Fast Cathode Kinetics | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.identifier.wosid | 000464769400020 | - |
dc.identifier.scopusid | 2-s2.0-85064182615 | - |
dc.identifier.rimsid | 68063 | - |
dc.contributor.affiliatedAuthor | Christopher W. Bielawski | - |
dc.identifier.doi | 10.1021/acsami.9b00214 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.11, no.14, pp.13234 - 13243 | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 11 | - |
dc.citation.number | 14 | - |
dc.citation.startPage | 13234 | - |
dc.citation.endPage | 13243 | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | ELEMENTAL-SULFUR | - |
dc.subject.keywordPlus | REDOX KINETICS | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | POLYSULFIDES | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | NANOCOMPOSITES | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordAuthor | sulfur copolymers | - |
dc.subject.keywordAuthor | graphene | - |
dc.subject.keywordAuthor | covalent binding | - |
dc.subject.keywordAuthor | cathode kinetics | - |
dc.subject.keywordAuthor | lithium-sulfur batteries | - |