Porous PAN micro/nanofiber membranes with potential application as Lithium-ion battery separators: physical, morphological and thermal properties
- 31 Downloads
The porous PAN micro/nanofiber membranes with an average diameter of 700–800 nm were produced in one step by electrospinning a ternary system of PAN/DMF/H2O with phase separation mechanism. Also, non-porous PAN micro/nanofiber membranes with a similar diameter were prepared. Physical, morphological, mechanical and thermal properties of the porous PAN micro/nanofiber membranes were characterized and compared with those of non-porous PAN membranes. Thermal shrinkage of the porous PAN micro/nanofiber membranes and the Celgard PP separators were examined to be 15% and 95%, respectively, after treating for 45 min at 200 °C. The porosity impacts of porous PAN micro/nanofiber membranes were explored on some of the effective properties in battery performance. The results revealed that the porous PAN micro/nanofiber membranes had a higher air permeability value than the Celgard PP separators, indicating that the porosity, interconnected pores and ionic conductivity were higher. The porous PAN micro/nanofiber membranes had an enhanced electrolyte wettability, small contact angle and large electrolyte uptake leading to be the most promising candidate for Li-ion battery (LIB) separators.
KeywordsPolyacrylonitrile Porous micro/nanofiber membrane Electrospinning Lithium-ion battery (LIB) Separator
- 14.Li J, Tian W, Yan H, He L, Tuo X (2016). J Appl Polym Sci:133Google Scholar
- 23.Lin J, Wang X, Ding B, Yu J, Sun G, Wang M (2012). Crit Rev Solid State Mater Sci 94(37)Google Scholar
- 32.Lubasova D, Martinova L (2011) J Nanomater. https://doi.org/10.1155/2011/292516