2023-Sustainable Industrial Processing Summit
SIPS2023 Volume 6. Kumar Intl. Symp. / Secondary Battery Manufacturing & Recycling
| Editors: | F. Kongoli, K. Aifantis, C. Capiglia, A. Fox, R. Yazami, A. U. H. Qurashi |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2023 |
| Pages: | 90 pages |
| ISBN: | 978-1-989820-82-7 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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A STUDY ON THE CHEMICAL AND ELECTROCHEMICAL STABILITY OF SULFIDE BASED SOLID ELECTROLYTES USING X-RAY ANALYTICAL TECHNIQUES
Jae-Ho Park1; Jiwon Jeong1; Da-Seul Han2; Eun Seong Kim1; Jun Tae Kim1; Hun-Gi Jung1; Woo Young Yoon3; Kyung-Wan Nam2; Kyung Yoon Chung4;1KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, Seoul, South Korea; 2DONGGUK UNIVERSITY-SEOUL, Seoul, South Korea; 3KOREA UNIVERSITY, Seoul, South Korea; 4KOREA INST. OF SCIENCE AND TECHNOLOGY, Seoul, South Korea;
Type of Paper: Invited
Id Paper: 108
Topic: 14
Abstract:
Sulfide based solid electrolytes are attracting attention because they have better electrochemical performances compared to other types of solid electrolytes. In addition, they have higher formability enabling favorable interfaces between the active material and solid electrolyte. Even though the sulfide based electrolyte shows better electrochemical characteristics among the various solid electrolytes, it poses some problems that have to be resolved such as poor compatibility of sulfide SEs against oxide-based cathode active materials and its instability against air and moisture.
This study presents the findings of a comparative analysis on the stability of two different sulfide solid electrolytes (SEs) which are glass-ceramic Li7P3S11 and crystalline Li6P5SCl. We synthesized both SEs using the same mechanical milling method in order to compare them under identical conditions. Then, the composite cathodes were prepared by simply mixing the SEs with the active materials and additives. We tried to observe any side reactions that occur during the charging and discharging process. Additionally, electrochemical characterization of the composite cathode were conducted using each SEs. Also, it is aimed to continuously monitor the degradation mechanism of the composite cathodes during the charging and discharging process, as well as evaluate their thermal stability under high-temperature conditions, utilizing X-ray based analytical techniques. The details will be discussed at the meeting.