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김영식

Kim, Youngsik
YK Research
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dc.citation.endPage 110 -
dc.citation.startPage 106 -
dc.citation.title SOLID STATE IONICS -
dc.citation.volume 261 -
dc.contributor.author Seo, Inseok -
dc.contributor.author Kim, Youngsik -
dc.date.accessioned 2023-12-22T02:18:19Z -
dc.date.available 2023-12-22T02:18:19Z -
dc.date.created 2014-06-02 -
dc.date.issued 2014-08 -
dc.description.abstract A new thio-germanium sulfide Li2GeGa2S6 (LGGS) has been synthesized for the first time. In order to determine the structure of the LGGS, the material was synthesized by being melted in a carbon-coated silica tube and being slowly cooled to make a crystalline structure. X-ray diffraction (XRD) was performed. The experimental XRD powder pattern of the LiGeGa2S6 appears to closely match the calculated data, Joint Committee on Powder Diffraction Standards (JCPDS). The host structure is built of GaS4 tetrahedra linked by corners to GeS4 tetrahedra to create a 3D framework forming tunnels along the c-axis, in which the Li+ ions are located. To further characterize the structure of the phase, the Raman and infrared (IR) spectra of LGGS were performed. The strongest intensity peak in the Raman spectra is observed at ~ 337 cm-1 assigned to symmetric stretch vibrations of S atoms (Ge-S-Ge symmetrical bridge-stretching mode) in GeS4 and GaS4 units. This symmetric sulfur bridge stretching mode is also observed at ~ 338 cm- 1 in the IR spectra. The ionic conductivities of the LGGS were conducted with various temperatures. The ionic conductivity of 3.8 × 10- 8 S/cm was observed at room temperature. Electrochemical stability was evaluated from the cyclic voltammogram of a Li/Li 2GeGa2S6/Au cell with a lithium reference electrode. The material shows high decomposition potential up to 6 V. -
dc.identifier.bibliographicCitation SOLID STATE IONICS, v.261, pp.106 - 110 -
dc.identifier.doi 10.1016/j.ssi.2014.04.015 -
dc.identifier.issn 0167-2738 -
dc.identifier.scopusid 2-s2.0-84900793893 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/4841 -
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84900793893 -
dc.identifier.wosid 000338819500018 -
dc.language 영어 -
dc.publisher ELSEVIER SCIENCE BV -
dc.title Synthesis and characterization of lithium germanogallium sulfide, Li2GeGa2S6 -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Physical; Physics, Condensed Matter -
dc.relation.journalResearchArea Chemistry; Physics -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -

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