26-03-2025 дата публикации
Номер: KR102787908B1
Принадлежит:
주식회사 엘지에너지솔루션
Disclosed is a method for manufacturing a separator for an electrochemical device. The method for manufacturing a separator uses polyvinyl pyrrolidone (PVP) functioning as a dispersing agent, and thus provides high dispersibility of particles and prevents aggregation of particles, even when inorganic particles having a small particle diameter is used in slurry for forming a porous coating layer. Therefore, the inorganic particles are distributed homogeneously in the porous coating layer of a finished separator. In addition, since PVP is used in combination with a fluorinated binder resin as a binder resin for the porous coating layer, the separator shows improved peel strength and adhesion to an electrode. Further, a non-solvent ingredient for the fluorinated binder resin is used as a solvent for PVP, and a non-solvent ingredient for PVP is used as a solvent for the fluorinated binder resin. As a result, while the porous coating layer is dried under a humidified condition, phase separation ...
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