Robust solid-state interface with a deformable glass interlayer in sulfide-based all-solid-state batteries
- Authors
- Choi, Sungjun; Jeon, Minjae; Jung, Wo Dum; Yang, Sungeun; Park, Sangbaek; Ji, Ho-Il; Lee, Jong-Ho; Kim, Byung-Kook; Sang, Byoung-In; Kim, Hyoungchul
- Issue Date
- Mar-2020
- Publisher
- ELSEVIER
- Keywords
- Elastic interface layer; Metallic electrode; Glass sulfide; Li-ion conductor; All-solid-state battery
- Citation
- SOLID STATE IONICS, v.346, pp.1 - 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- SOLID STATE IONICS
- Volume
- 346
- Start Page
- 1
- End Page
- 6
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/10602
- DOI
- 10.1016/j.ssi.2019.115217
- ISSN
- 0167-2738
- Abstract
- We introduced a new elastic interface layer (EIL), (Li2S)(0.75)(P2S5)(0.25) glass, in all-solid-state batteries (ASSBs) to improve the solid-state interfacial structure, and analyzed its structural evolution in electrochemical charge/discharge cycles. This EIL had a lower bulk modulus, thereby providing good powder processability and high mechanical deformability against volume changes of the electrode. Compared to a cell configuring EIL, the reference cell exhibited a considerable increase in the electrolyte resistance; moreover, a new resistance component was identified in the high-frequency region (500-50 kHz). This high-resistance component resulting from interfacial deterioration such as metal fragmentation and micropore formation was successfully suppressed by applying a mechanically deformable EIL. We believe that this study would provide insights into the application of EIL for configuring a stable interface with a metallic electrode in ASSBs.
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