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Jung, Yoon Seok
Electrochemical Solid-State Energy Storage Lab
Research Interests
  • Batteries, All-solid-state batteries, solid electrolytes, electrodes, atomic layer deposition,energy storage devices

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Aqueous-solution synthesis of Na3SbS4 solid electrolytes for all-solid-state Na-ion batteries

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dc.contributor.authorKim, Tae Wonko
dc.contributor.authorPark, Kern Hoko
dc.contributor.authorChoi, Young Eunko
dc.contributor.authorLee, Ju Yeonko
dc.contributor.authorJung, Yoon Seokko
dc.date.available2018-01-11T11:32:49Z-
dc.date.created2018-01-09ko
dc.date.issued201801ko
dc.identifier.citationJOURNAL OF MATERIALS CHEMISTRY A, v.6, no.3, pp.840 - 844ko
dc.identifier.issn2050-7488ko
dc.identifier.urihttp://scholarworks.unist.ac.kr/handle/201301/23187-
dc.identifier.urihttp://pubs.rsc.org/en/content/articlelanding/2017/ta/c7ta09242c#!divAbstractko
dc.description.abstractRoom-temperature-operable all-solid-state Na-ion batteries (ASNBs) using sulfide Na-ion solid electrolytes (SEs) are promising because of their potential for greater safety, lower cost, and acceptable performance. Despite extensive developments in the area of sulfide Na-ion SEs, their poor chemical stability and prospects for wet-chemical synthesis have been overlooked to date. Herein, the scalable synthesis of Na3SbS4 via aqueous-solution routes using precursors of Na2S, Sb2S3, and elemental sulfur for ASNBs is described. With no concerns about the evolution of toxic H2S gas, the aqueous-solution-synthesized Na3SbS4 exhibits high ionic conductivities (0.1–0.2 mS cm−1 at 25 °C). Importantly, the homogeneity of the aqueous solutions enables the creation of uniform Na3SbS4 coatings on FeS2. Fe2S/Na–Sn ASNBs, employing the aqueous-solution-synthesized Na3SbS4 and the Na3SbS4-coated FeS2 for the SE layer and positive electrode, respectively, demonstrate a high charge capacity of 256 or 346 mA h g−1 with good reversibility at 30 °C, highlighting their potential for practical applications.ko
dc.languageENGko
dc.publisherROYAL SOC CHEMISTRYko
dc.titleAqueous-solution synthesis of Na3SbS4 solid electrolytes for all-solid-state Na-ion batteriesko
dc.typeARTICLEko
dc.identifier.pid1112null
dc.identifier.rimsid29606ko
dc.identifier.scopusid2-s2.0-85040953491ko
dc.identifier.wosid000422949700012ko
dc.type.rimsAko
dc.identifier.doihttp://dx.doi.org/10.1039/C7TA09242Cko
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