Journal
JOURNAL OF POWER SOURCES
Volume 195, Issue 24, Pages 8302-8305Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2010.07.016
Keywords
Inorganic separator; Mechanical properties; Lithium-ion battery; Aluminum oxide
Funding
- Korean Government(MEST) [NRF-2009-C1AAA001-2009-0094157]
- Korea Evaluation Institute of Industrial Technology (KEIT) [kiatsanhak09-A-08] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [kiatsanhak10-D-08, 과C6A1904, 2009-0094157] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Inorganic particulate film/poly(methyl methacrylate) (PMMA)/inorganic particulate film trilayer separators are prepared by means of simple dip-coating of inorganic particle layers on to both sides of PMMA thin films. The mechanical, thermal and electrochemical characteristics of the trilayer are investigated using scanning electron microscopy, a universal tensile machine, a thermal shrinkage test and a charge-discharge test. As a polymer matrix, PMMA has exceptional compatibility with the carbonate-based liquid electrolyte, which can result in improved battery/cell performance. When inorganic Al2O3 particles are used to coat the PMMA film, drawbacks associated with gel-type membranes, namely, poor dimensional stability and thermal stability are greatly improved. This inorganic trilayer membrane is believed to be an inexpensive, novel separator for application in lithium-ion batteries. (c) 2010 Elsevier B.V. All rights reserved.
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