Close-packed poly(methyl methacrylate) nanoparticle arrays-coated polyethylene separators for high-power lithium-ion polymer batteries

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 polye...

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Bibliographic Details
Published in:Journal of power sources 2011-08, Vol.196 (16), p.7035-7038
Main Authors: Park, Jang-Hoon, Park, Woong, Kim, Jong Hun, Ryoo, Dongjo, Kim, Hoon Sik, Jeong, Yeon Uk, Kim, Dong-Won, Lee, Sang-Young
Format: Article
Language:English
Subjects:
Applied sciences
Arrays
Batteries
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
Gel polymer electrolytes
High-power
Lithium-ion polymer batteries
Nanocomposites
Nanomaterials
Nanoparticle arrays
Nanostructure
PMMA
Polyethylenes
Polymethyl methacrylates
Separators
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Summary: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.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2010.09.102