Weakening Lithium‐Ion Coordination in Poly(Ethylene Oxide)‐Based Solid Polymer Electrolytes for High Performance Solid‐State Batteries
Central South University · Hong Kong Polytechnic University
Abstract
Abstract The high crystallinity of poly(ethylene oxide)‐based solid polymer electrolytes (PEO‐based SPEs) is viewed as a key barrier to their ambient‐temperature performance. Conventional approaches to mitigate crystallinity necessitate elevated operation temperatures of 50–60 °C. Interestingly, this work indicates that the predominant factor limiting ambient‐temperature performance is the robust coordination between lithium‐ion (Li + ) and ether oxygen (EO), rather than the crystallinity. By rationally tailoring the Li + concentration, this work effectively weakens the coordination strength, thereby enhancing the ambient‐temperature electrochemical performance. An optimal SPE with EO: Li ratio of 9:1 exhibits…
Citation impact
- FWCI
- 35.27
- Percentile
- 100%
- References
- 87
Authors
8Topics & keywords
- Materials science
- Ethylene oxide
- Lithium (medication)
- Electrolyte
- Polymer electrolytes
- Solid-state
- Polymer
- Poly ethylene