Effect of Li2SO4 on the properties of Li2S-P2S5 glass-ceramic solid electrolytes
- Authors
- Choi, Sunho; Eom, Minyong; Park, Chanhwi; Son, Seunghyeon; Lee, Giho; Shin, Dongwook
- Issue Date
- May-2016
- Publisher
- ELSEVIER SCI LTD
- Keywords
- All-solid-state lithium ion battery; Solid electrolyte; Thermal stability; Sulfide; Sulfate
- Citation
- CERAMICS INTERNATIONAL, v.42, no.6, pp.6738 - 6742
- Indexed
- SCIE
SCOPUS
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 42
- Number
- 6
- Start Page
- 6738
- End Page
- 6742
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/23096
- DOI
- 10.1016/j.ceramint.2016.01.045
- ISSN
- 0272-8842
- Abstract
- Glass-ceramic solid electrolytes of (100-x)(78Li(2)S center dot 22P(2)S(5))center dot xLi(2)SO(4) (x=0, 4, and 5) were prepared by high-energy mechanical milling and subsequent heat-treatment. The low thermal stability of the metastable thio-LISICON II analog phase of the 78Li(2)S center dot 22P(2)S(5) glass-ceramics was identified by gradual transformation to a thio-LISICON III analog phase over a narrow temperature range of heat treatment. However, the addition of 5 mol% Li2SO4 into the 78Li(2)S center dot 22P(2)S(5) glass-ceramics suppressed the formation of the thio-LISICON DI analog phase and enhanced the structural stability of the thio-LISICON II analog phase at higher heat treatment temperatures. From X-ray diffraction (XRD) and differential thermal analysis (DTA) results, the enhanced thermal stability of the thio-LISICON II analog phase in the Li2SO4 added 78Li(2)S center dot 22P(2)S(5) glass-ceramics is closely related to the lithium content of the glass matrix and the incorporated tetrahedral SO42- anions in the crystal lattice of the thio-LISICON II analog phase.
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