Journal
POLYMER
Volume 68, Issue -, Pages 335-343Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2015.04.055
Keywords
Polyacrylonitrile; Electrospinning; Partial oxidation
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Funding
- Industrial Strategic Technology Development Program - Ministry of Knowledge Economy (MKE, Korea) [10040033]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [NRF-2014R1A2A2A04029532]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10040033] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Nanofibrous membranes of polyacrylonitrile (PAN) prepared by electrospinning technique were converted to partially oxidized PAN (oxy-PAN) at 230 degrees C and at different time periods. The physical properties and electrochemical characteristics of oxy-PAN membranes were investigated for use as separator membrane in lithium ion battery (LIB). The optimized oxy-PAN membrane showed high tensile strength and thermal stability along with high electrolyte uptake and high ionic conductivity at room temperature. Impedance spectroscopic studies of oxy-PAN membranes revealed good stability and compatibility with lithium electrode and liquid electrolyte which are favorable attributes for long-term storage of lithium ion batteries. The Li/oxy-PAN/LiFePO4 cell delivered stable and excellent cycle performance. (C) 2015 Elsevier Ltd. All rights reserved.
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