Journal
JOURNAL OF POWER SOURCES
Volume 226, Issue -, Pages 54-60Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2012.10.082
Keywords
Ceramic-coated separators; Lithium-ion cells; Polyethylene separator; Sulfonated silica; Thermal stability
Funding
- Fundamental R&D Program for Core Technology of Materials and the Human Resources Development of KETEP Grant
- Korea government Ministry of Knowledge Economy [20104010100560]
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Sulfonated SiO2 particles containing poly(lithium 4-styrenesulfonte) in their shell are synthesized and used as coating materials for the preparation of ceramic-coated separators for lithium-ion cells. The ceramic-coated separators exhibit good thermal stability and wettability for liquid electrolyte due to the presence of a heat-resistant silica with hydrophilic poly(lithium 4-styrenesulfonte). By using these ceramic-coated separators, lithium-ion cells composed of a carbon negative electrode and a LiNi1/3Co1/3Mn1/3O2 positive electrode are assembled and their cycling performances are evaluated. The cells assembled with the ceramic-coated separators demonstrate superior cycling performance compared to cell prepared with a polyethylene separator. (C) 2012 Elsevier B.V. All rights reserved.
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