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

Jang Hoon Park, Woong Park, Jong Hun Kim, Dongjo Ryoo, Hoon Sik Kim, Yeon Uk Jeong, Dong Won Kim, Sang Young Lee

Research output: Contribution to journalArticlepeer-review

70 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)7035-7038
Number of pages4
JournalJournal of Power Sources
Volume196
Issue number16
DOIs
Publication statusPublished - 2011 Aug 15

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (MEST) ( NRF-2009-C1AAA001-2009-0093307 ). This research was also supported by the Converging Research Center Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2009-0082083 ). This work was also supported by the National Research Foundation of Korea Grant funded by the Korean Government ( 2009-0066986 ).

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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