Germanium and Tin Selenide Nanocrystals for High-Capacity Lithium Ion Batteries: Comparative Phase Conversion of Germanium and Tin
DC Field | Value | Language |
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dc.contributor.author | Im, Hyung Soon | - |
dc.contributor.author | Lim, Young Rok | - |
dc.contributor.author | Cho, Yong Jae | - |
dc.contributor.author | Park, Jeunghee | - |
dc.contributor.author | Cha, Eun Hee | - |
dc.contributor.author | Kang, Hong Seok | - |
dc.date.accessioned | 2021-09-05T05:01:10Z | - |
dc.date.available | 2021-09-05T05:01:10Z | - |
dc.date.issued | 2014-09-25 | - |
dc.identifier.issn | 1932-7447 | - |
dc.identifier.issn | 1932-7455 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/97371 | - |
dc.description.abstract | Germanium and tin sulfide nanostructures are considered the most promising candidates for useful alternative materials in commercial Li-graphite anodes of lithium ion batteries. Selenides have received less attention, but the electrochemical reaction mechanism is still being debated. We report the novel synthesis of GeSex and SnSex (x = 1 and 2) nanocrystals by a gas-phase laser photolysis reaction and their 0.8 excellent reversible capacity for lithium ion batteries. The capacity was 400-800 (mA h)/g after 70 cycles, which is close to the theoretical capacity (Li4.4Ge or Li4.4Sn). Remarkably, SnSex exhibited higher rate capabilities than GeSex. Ex situ X-ray diffraction and Raman spectroscopy revealed the cubic-tetragonal phase conversion of Ge and Sn upon lithiation/delithiation to support their distinctive lithium ion battery capacities. First-principles calculations of the Li intercalation volume change indicate that the smallest volume expansion in the cubic Sn phase can guarantee the enhanced cycling capability of the Sn compounds. | - |
dc.format.extent | 5 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Germanium and Tin Selenide Nanocrystals for High-Capacity Lithium Ion Batteries: Comparative Phase Conversion of Germanium and Tin | - |
dc.type | Article | - |
dc.publisher.location | 미국 | - |
dc.identifier.doi | 10.1021/jp507337c | - |
dc.identifier.scopusid | 2-s2.0-84949117250 | - |
dc.identifier.wosid | 000342396300017 | - |
dc.identifier.bibliographicCitation | JOURNAL OF PHYSICAL CHEMISTRY C, v.118, no.38, pp 21884 - 21888 | - |
dc.citation.title | JOURNAL OF PHYSICAL CHEMISTRY C | - |
dc.citation.volume | 118 | - |
dc.citation.number | 38 | - |
dc.citation.startPage | 21884 | - |
dc.citation.endPage | 21888 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | LI | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | GE | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | ANODE | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | POWDERS | - |
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