Cantor Colburn LLP
Heat-resistant and high-tenacity ultrafine fibrous separation layer, method for manufacturing same, and secondary cell using same
Provided is an ultrafine fibrous porous separator with heat resistance and high-strength and a manufacturing method thereof, which enables mass-production of a heat-resistant and high-strength ultrafine fibrous separator by using an air-electrospinning (AES) method, and to a secondary battery using the same. The method of manufacturing a heat-resistant and high-strength ultrafine fibrous porous separator includes the steps of: air-electrospinning a mixed solution of 50 to 70 wt % of a heat-resistant, polymer material and 30 to 50 wt % of a swelling polymer material, to thereby form a porous web of a heat-resistant ultrafine fiber in which the heat-resistant polymer material and the swelling polymer material are consolidated in an ultrafine fibrous form; performing drying to control a solvent and moisture that remain on the surface of the porous web; and performing thermal compression on the dried porous web at a temperature of between 170° C. and 210° C. so as to obtain the separator.
AMOGREENTECH CO., LTD.
H H H Y H H H Y H H H Y H H H
H01M H01M H01G Y10T H01M H01M H01M Y02E H01M H01M H01M Y02P H01M H01M H01M
inventional inventional inventional additional inventional inventional inventional additional inventional additional additional additional inventional inventional inventional
In Yong Yong Sik Yun Hye Byung Gwang
Seo Jung Kim Jo