期刊
IONICS
卷 21, 期 7, 页码 1937-1943出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-014-1360-4
关键词
Lithium sulfur cell; Gel polymer electrolyte; Polyimide; Poly(vinylidene fluoride-co-hexafluoropropylene); Nano-Al2O3
资金
- China Postdoctoral Science Foundation [2013M530369, 2014T70819]
- Natural Science Foundation of Guangdong Province [S2013040016471, U1401248]
- National Natural Science Foundation of China [U1401248, 21403076]
- Department of Education of Guangdong Province [2013CXZDA013]
A novel gel polymer electrolyte (GPE) based on an electrospun polymer membrane of polyimide (PI) activating with poly(vinylidene fluoride-cohexafluoropropylene) (PVDF-HFP) and further coating with nano-Al2O3 was prepared, and its performance for lithium-sulfur (Li-S) cell was investigated. It is found that the Li-S cell using the new GPE enabled achieving a stable discharge capacity of 820 mAh g(-1) after more than 100 cycles. This new GPE system with activating with PVDF-HFP and further coating with nano-Al2O3 was capable of upholding the electrolyte solution and can suppress the dissolution of the intermediate products generated during the discharge process and thus improves the performance of Li-S cell.
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