Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 535, Issue -, Pages 151-157Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2017.04.042
Keywords
Amino-functionalized SiO2 particles; Lithium-ion battery; Ceramic-coated separator; Thermal stability; Cycle performance
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Funding
- Basic Science Research Program of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT, and Future Planning [2014R1A2A2A01002154, 2016R1A4A1012224]
- National Research Foundation of Korea [2014R1A2A2A01002154] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Amino-functionalized SiO2 (N-SiO2) particles were synthesized and used to coat both sides of a porous polyethylene separator. The N-SiO2 coated separator exhibited good wettability by liquid electrolyte, high ionic conductivity when soaked with liquid electrolyte and enhanced thermal stability at high temperatures. By employing the N-SiO2 coated separator in fabricating the lithium-ion cell composed of a graphite negative electrode and a LiNi1/3Co1/3Mn1/3O2 positive electrode, its cycling stability was improved compared to a cell assembled with either a conventional polyethylene separator or a SiO2 coated polyethylene separator. The NSiO2 coated separator is a promising separator to enhance the cycling stability and thermal safety of lithium-ion battery.
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