HEAT-RESISTANT NANO WEB MEMBRANE AND METHOD FOR PRODUCTION THEREOF

摘要

A heat resistant nanoweb separation layer according to the present invention includes a fine porous support layer, an adhesion layer which is formed on one side or both sides of the fine porous support layer, and a nanoweb layer which is formed on one side to face the fine porous support layer of the adhesion layer. The heat resistant nanoweb separation layer according to the present invention increases the lifetime of a battery and improves the performance of the battery by improving stability and a thermal feature without damaging a pore of the support layer. Also, the wetting of an electrolyte is improved through the improvement of a surface feature like a low contact angle and compatibility with the electrolyte by introducing a water-soluble adhesion layer and the degradation of physical properties of the nanoweb separation layer due to the introduction of a water-soluble polymer is prevented. Thereby, a high output battery and a high capacity battery are manufactured.