Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 160, Issue 9, Pages A1341-A1347Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.003309jes
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Funding
- National Program on Key Basic Research Project of China (973 Program) [MOST2011CB935700]
- Instrument Developing Project of the Chinese Academy of Sciences [YZ201137]
- National High Technology Research and Development Program of China (863 Program) [2013AA050905]
- Qingdao Key Lab of solar energy utilization and energy storage technology
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A core-shell structured polysulfonamide@polyvinylidene fluoride-co-hexafluoropropene composite nonwoven separator was exploited for lithium ion battery via coaxial electrospinning technique for enhanced safety characteristic of battery. Polysulfonamide (PSA) and polyvinylidene fluoride-co-hexafluoropropene (PVDF-HFP) were used as the inner (core) and outer (shell) layer, respectively. Compared with the commercial polypropylene (PP) separator, the PSA@PVDF-HFP composite nonwoven separator manifested higher porosity, better electrolyte wettability and superior thermal stability. Moreover, it was demonstrated that the assembled cell with PSA@PVDF-HFP composite nonwoven separator displayed superior rate capability and better cycling capacity retention than those of PP separator. Notably, these attractive characteristics would endow PSA@PVDF-HFP composite nonwoven a promising separator for high power lithium ion battery. (C) 2013 The Electrochemical Society.
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