Microstructural evolution of solution-processed Li-Ge-Ga-S chalcogenide powders for Li+ ion battery applications
- Authors
- Cho, Yun Gu; Shin, Sang Yeol; Lee, Jun Ho; Kim, Junghoon; Chung, Woon Jin; Shin, Dong Wook; Choi, Yong Gyu
- Issue Date
- Jan-2016
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Li+ ion battery; Solid electrolyte; Amorphous chalcogenide; Solution process
- Citation
- JOURNAL OF NON-CRYSTALLINE SOLIDS, v.431, pp.57 - 60
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NON-CRYSTALLINE SOLIDS
- Volume
- 431
- Start Page
- 57
- End Page
- 60
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/24088
- DOI
- 10.1016/j.jnoncrysol.2015.04.009
- ISSN
- 0022-3093
- Abstract
- Sulfur-based chalcogenide Li-Ge-Ga-S powders for use in solid electrolyte of Li+ ion batteries have been successfully synthesized via a low-temperature solution-based process. Their Li+ ion conductivity turns out to be similar to 7 x 10(-4) S/cm at room temperature which is quite comparable with that of melt-quenched or mechanically-alloyed analogues. It is revealed that their microstructure becomes amorphized appropriately at a specific Ga/Ge ratio where the ionic conductivity is maximized. A structural model is proposed, which emphasizes correlations between gallium and lithium inside the amorphous structures.
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