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In‐Built Quasi‐Solid‐State Poly‐Ether Electrolytes Enabling Stable Cycling of High‐Voltage and Wide‐Temperature Li Metal Batteries.
- Source :
- Advanced Functional Materials; 9/2/2021, Vol. 31 Issue 36, p1-10, 10p
- Publication Year :
- 2021
-
Abstract
- Developing solid‐state electrolytes with good compatibility for high‐voltage cathodes and reliable operation of batteries over a wide‐temperature‐range are two bottleneck requirements for practical applications of solid‐state metal batteries (SSMBs). Here, an in situ quasi solid‐state poly‐ether electrolyte (SPEE) with a nano‐hierarchical design is reported. A solid‐eutectic electrolyte is employed on the cathode surface to achieve highly‐stable performance in thermodynamic and electrochemical aspects. This performance is mainly due to an improved compatibility in the electrode/electrolyte interface by nano‐hierarchical SPEE and a reinforced interface stability, resulting in superb‐cyclic stability in Li||Li symmetric batteries (>4000 h at 1 mA cm−2/1 mAh cm−2; >2000 h at 1 mA cm−2/4 mAh cm−2), which are the same for Na, K, and Zn batteries. The SPEE enables outstanding cycle‐stability for wide‐temperature operation (15–100 °C) and 4 V‐above batteries (Li||LiCoO2 and Li||LiNi0.8Co0.1Mn0.1O2). The work paves the way for development of practical SSMBs that meet the demands for wide‐temperature applicability, high‐energy density, long lifespan, and mass production. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1616301X
- Volume :
- 31
- Issue :
- 36
- Database :
- Complementary Index
- Journal :
- Advanced Functional Materials
- Publication Type :
- Academic Journal
- Accession number :
- 152247863
- Full Text :
- https://doi.org/10.1002/adfm.202102347