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Critical role of zeolites as H2S scavengers in argyrodite Li6PS5Cl solid electrolytes for all-solid-state batteries.
- Source :
- Journal of Materials Chemistry A; 8/28/2021, Vol. 9 Issue 32, p17311-17316, 6p
- Publication Year :
- 2021
-
Abstract
- All-solid-state batteries (ASSBs) with inorganic solid electrolytes (SEs) have received much attention as future energy storage systems owing to their high energy densities and excellent safety. Sulfide-based SEs are considered promising because they exhibit greater ionic conductivities and mechanical softness than oxide-based SEs. In particular, argyrodite-type Li<subscript>6</subscript>PS<subscript>5</subscript>Cl with a high ionic conductivity of 3.0 × 10<superscript>−3</superscript> S cm<superscript>−1</superscript> offers new possibilities for realizing high-performance ASSBs. However, contact with moisture results in the evolution of H<subscript>2</subscript>S from Li<subscript>6</subscript>PS<subscript>5</subscript>Cl, which has hindered the scalable fabrication and practical application of Li<subscript>6</subscript>PS<subscript>5</subscript>Cl. To avoid this issue, we propose incorporating a zeolite, which can act as a scavenger for both toxic H<subscript>2</subscript>S gas and moisture, as a functional additive in Li<subscript>6</subscript>PS<subscript>5</subscript>Cl. We demonstrate that zeolite-embedded Li<subscript>6</subscript>PS<subscript>5</subscript>Cl exhibits greatly improved chemical stability and reduced H<subscript>2</subscript>S evolution upon storage in humid air (RH 50%), leading to a noticeable improvement in the cycle performance of ASSBs. This approach could resolve the technical issues associated with sulfide-based SEs toward commercial-scale implementation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507488
- Volume :
- 9
- Issue :
- 32
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry A
- Publication Type :
- Academic Journal
- Accession number :
- 151959268
- Full Text :
- https://doi.org/10.1039/d1ta04799j