期刊
JOURNAL OF POWER SOURCES
卷 196, 期 16, 页码 7035-7038出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2010.09.102
关键词
Lithium-ion polymer batteries; Separators; Gel polymer electrolytes; PMMA; Nanoparticle arrays; High-power
资金
- Korean Government (MEST) [NRF-2009-C1AAA001-2009-0093307]
- Ministry of Education, Science and Technology [2009-0082083]
- Korean Government [2009-0066986]
- National Research Foundation of Korea [2009-0066986, 2009-0082083] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In an endeavor to improve the discharge C-rate performance of lithium-ion polymer batteries targeting high-power applications, we develop a novel gel polymer electrolyte-coated separator, which is based on introduction of close-packed poly(methyl methacrylate)(PMMA) nanoparticle arrays onto a polyethylene (PE) separator. In contrast to a conventional PMMA dense coating layer, a noticeable feature of the PMMA nanoparticle array coating layer is its highly ordered nanoporous structure, i.e. well-connected interstitial voids formed between the close-packed PMMA nanoparticles. This unique morphology allows for not only favorable liquid electrolyte wettability but also facile ionic conduction of the PMMA nanoparticle arrays-coated separator, both of which play crucial roles in improving the discharge C-rate performance of cells assembled with the separator. (C) 2010 Elsevier B.V. All rights reserved.
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