The Effect of Different Ratios of Malonic Acid to Plyvinylalcohol on Electrochemical and Mechanical Properties of Polyacrylonitrile Electrospun Separators in Lithium-Ion Batteries
Authors
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Fartash Khodaverdi
Affiliation
Department of Petroleum and Chemical Engineering, Science and Research Branch, Islamic Azad University, 11369 Tehran, P. O. B. 1477893855, Iran
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Mehran Javanbakht
Affiliation
Department of Chemistry, Amirkabir University of Technology, 11369 Tehran, P. O. B. 1591634311, Iran
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Ali Vaziri
AffiliationDepartment of Petroleum and Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Mehdi Jahanfar
Affiliation
Department of Biological Engineering and Biotechnology, Shahid Beheshti University, 11369 Tehran, P. O. B. 1983969411, Iran
Abstract
The present study aimed to investigate the mechanical, thermal, and electrochemical properties of Polyacrylonitrile (PAN) electrospun separators in the presence of Polyvinylalcohol (PVA) hydrophilic materials and Malonic Acid (MA) crosslinker inside the lithium-ion batteries. The results showed that the M3 modified separator with the MA to PVA+MA (wt./wt.) optimum ratio of 37.5 % had the best performance in all tests. This separator had a value of 3.16 mS/cm in the ion conductivity test. Additionally, it had an electrolyte uptake of 1172 % (2.39 times more than the neat PAN separator) and thermal shrinkage of 7.4 % at 180 °C, where this value was 14.5 % for neat PAN separator at the same experimental condition. Furthermore, the acceptable performance in the battery performance tests was compared with other separators.
