A Long Cycle Life, All-Solid-State Lithium Battery with a Ceramic–Polymer Composite Electrolyte

All-solid-state lithium batteries are receiving ever-increasing attention to both circumvent the safety issues and enhance the energy density of Li-based batteries. The combinative utilization of Li+-ion conductive polymer and ceramic electrolytes is an attractive strategy for the development of all...

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Bibliographic Details
Published in:ACS applied energy materials 2020-03, Vol.3 (3), p.2916-2924
Main Authors: Yu, Xingwen, Manthiram, Arumugam
Format: Article
Language:English
Subjects:
Chemistry
Energy & Fuels
Materials Science
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Summary:All-solid-state lithium batteries are receiving ever-increasing attention to both circumvent the safety issues and enhance the energy density of Li-based batteries. The combinative utilization of Li+-ion conductive polymer and ceramic electrolytes is an attractive strategy for the development of all-solid-state lithium metal batteries. Such a strategy can take advantages of the relatively high ionic conductivity of ceramic superionic conductors and the elastic feature of the ionic polymers. In this study, a poly­(ethylene oxide)–lithium aluminum titanium phosphate (PEO-LATP) composite solid electrolyte has been developed with a facile slurry-casting method. The composite solid electrolyte shows enhanced Li+-ion conductivity, improved dendrite-suppression capability, reduced interfacial problems, and elastic features. With the PEO-LATP composite solid electrolyte, all-solid-state batteries with a lithium–metal anode and a lithium iron phosphate (LiFePO4) cathode show stable cycling performances over 1000 cycles with a capacity degradation rate of
ISSN:2574-0962
2574-0962
DOI:10.1021/acsaem.9b02547