期刊
JOURNAL OF POWER SOURCES
卷 306, 期 -, 页码 152-161出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2015.12.010
关键词
All-solid-state; Lithium battery; Low temperature; Single ion polymer electrolyte; sp(3) boron
资金
- National Nature Science Foundation of China [21233006, 21473164, 21403202, 21504084]
- Natural Science Foundation of Hubei province of China [2014CFB278]
- Fundamental Research Funds for the Central University, China University of Geosciences (Wuhan) [CUG150620, CUG150615]
The ionic conductivity decay problem of poly(ethylene oxide) (PEO)-based solid polymer electrolytes (SPEs) when increase the lithium salt of the SPEs up to high concentration is here functionally overcome by the incorporation of a charge delocalized sp(3) boron based single ion conducting polymer electrolyte (SIPE) with poly(ethylene oxide) to fabricate solid-state sp(3) boron based SIPE membranes (S-BSMs). By characterizations, particularly differential scanning calorimeter (DSC) and ionic conductivity studies, the fabricated S-BSMs showed decreased melting points and increased ionic conductivity as steadily increase the content of sp(3) boron based SIPE, which significantly improved the low temperature performance of the all-solid-state lithium batteries. The fabricated Li vertical bar S-BSMs vertical bar LiFePO4 cells exhibit highly electrochemical stability and excellent cycling at temperature below melting point of PEO, which has never been reported so far for SIPEs based all-solid-state lithium batteries. (C) 2015 Elsevier B.V. All rights reserved.
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