Journal
COMPOSITES PART B-ENGINEERING
Volume 112, Issue -, Pages 31-37Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2016.12.025
Keywords
Separators; Poly (vinylidene fluoride)/poly; (acrylonitrile) blends; Electrospun membranes; Lithium-ion batteries
Funding
- project of Jiangxi Province Advantageous Science and Technology Innovation Team [20153BCB24001]
- National Natural Science Foundation of China [51163001]
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Electrospun polymer membranes have great potentials as separators for lithium-ion batteries due to their high porosity. However, electrospun membranes usually suffer from low mechanical strength because of weak bonding at inter-fiber junctions. In this study, high mechanical strength over 20 MPa is achieved for poly (vinylidene fluoride) (PVDF)/poly (acrylonitrile) (PAN) blend membranes at a ratio of 5/5 after modification by a PVDF dilute solution. Moreover, good dimensional stability at 200 degrees C is exhibited the modified blend membranes due to the presence of continuous PAN nanofibrils. Separators based on the modified blend membranes impart lithium-ion batteries with superior discharge capacity and cyclic performance. (C) 2016 Elsevier Ltd. All rights, reserved.
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