Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 334, Issue 1-2, Pages 117-122Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2009.02.018
Keywords
Macroporous polymer electrolyte; PVDF/PEO-b-PMMA; Phase inversion; Ionic conductivity
Categories
Funding
- Hunan Provincial Natural Science Foundation of China [06JJ30007]
- New Century Excellent Talents in University [NCET-05-0707]
- Scientific Research Fund of Hunan Provincial Education Department [06AO68]
- Cultivation Found of the Key Scientific and Technical Innovation Project
- Ministry of Education of China [207075]
- National Nature Science Foundation of China [20874082]
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A novel macroporous polymer electrolyte based on poly(vinylidene fluoride) (PVDF) and poly(ethylene oxide)-block-poly(methyl methacrylate) (PEO-b-PMMA) block copolymers blends was prepared by a phase inversion technique. The crystallinity of the polymer matrix was found to decrease with increase of PEO-b-PMMA content, which was confirmed by DSC thermal analyses. The pore structure and connectivity could be improved with addition of PEO-b-PMMA in the polymer matrix. The resulting macroporous polymer electrolyte exhibited high ionic conductivity, 2.79 x 10(-3) S cm(-1) at room temperature, and a good electrochemical stability up to 5.0V (vs. Li/Li+). These results showed that it is of great potential application in polymer lithium ion batteries. (C) 2009 Elsevier B.V. All rights reserved.
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