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Grain Boundary Electronic Insulation for High‐Performance All‐Solid‐State Lithium Batteries.
- Source :
- Angewandte Chemie International Edition; 1/26/2023, Vol. 62 Issue 5, p1-10, 10p
- Publication Year :
- 2023
-
Abstract
- Sulfide electrolytes with high ionic conductivities are one of the most highly sought for all‐solid‐state lithium batteries (ASSLBs). However, the non‐negligible electronic conductivities of sulfide electrolytes (≈10−8 S cm−1) lead to electron smooth transport through the sulfide electrolyte pellets, resulting in Li dendrite directly depositing at the grain boundaries (GBs) and serious self‐discharge. Here, a grain‐boundary electronic insulation (GBEI) strategy is proposed to block electron transport across the GBs, enabling Li−Li symmetric cells with 30 times longer cycling life and Li−LiCoO2 full cells with three times lower self‐discharging rate than pristine sulfide electrolytes. The Li−LiCoO2 ASSLBs deliver high capacity retention of 80 % at 650 cycles and stable cycling performance for over 2600 cycles at 0.5 mA cm−2. The innovation of the GBEI strategy provides a new direction to pursue high‐performance ASSLBs via tailoring the electronic conductivity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 62
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 161471322
- Full Text :
- https://doi.org/10.1002/anie.202215680