The Effect of Different Ratios of Malonic Acid to Plyvinylalcohol on Electrochemical and Mechanical Properties of Polyacrylonitrile Electrospun Separators in Lithium-Ion Batteries

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.

Galactomannan crosslinking with a green plasticizer malonic acid and its biomedical applications

“…The modified products are useful as soil strengthening and conditioning agents, 33 separators in batteries, 34 colloidal stabilizers, 35 bio-analytical applications and many other biomedical applications such as drug delivery 36 and 3D-scaffold modification. 37 A key advantage of using malonic acid is that it is the shortest possible diacid having only one methylene which acts as a spacer and two carboxy groups each at the terminal end which are utilized for acylation.…”

“…starch, cellulose, etc. The modified products are useful as soil strengthening and conditioning agents, 33 separators in batteries, 34 colloidal stabilizers, 35 bio-analytical applications and many other biomedical applications such as drug delivery 36 and 3D-scaffold modification. 37…”