SEPARATOR FOR ELECTROCHEMICAL DEVICE AND METHOD OF ITS MANUFACTURING Russian patent published in 2014 - IPC H01M2/16 C08J9/28 

FIELD: machine building.

SUBSTANCE: separator for electrochemical device includes stages of suspension application to the substrate, at least the suspension contains cellulose fibres and hydrophilous agent of pores formation with boiling point 180°C or higher; drying of the above mentioned suspension with sheets manufacturing on the mentioned substrate, and sheets separation from the mentioned substrate with separator creation, where the mentioned separator has the volume resistivity 1500 Ohm·cm or below, as determined using alternating current with frequency 20 kHz and impregnated by 1 mol solution LiPF₆ in propylene carbonate of the separator.

EFFECT: invention ensures creation of the separator for the electrochemical device with high value characteristics, such as low internal resistivity of the electrochemical device, high characteristics of Li screening that can't be provided with use of the nonwoven materials, such as paper; such separator can be obtained with the acceptable price.

17 cl, 1 tbl, 3 dwg, 14 ex