SEPARATOR STRUCTURE, METHOD FOR PRODUCING THE SAME, AND SECONDARY BATTERY USING THE SAME

• Main Authors: KWON, Junhan, LIM, Munhyuk, KIM, Keeyong, JUNG, Kyungho, LEE, Sumin, LEE, Dongwook, LEE, Juchul, KIM, Hongjung, AHN, Yongkeon, PI, Youngmin
• Format: Patent
• Language: English; French
• Published: 22.09.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; DERIVATIVES THEREOF; ELECTRICITY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; POLYSACCHARIDES; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING

Disclosed are a separator for a lithium ion secondary battery, a method for producing the same, and a secondary battery using the same. A separator structure includes a support disposed inside a secondary battery. The support includes a porous polymer matrix, cellulose nano fibers dispersed in the matrix, and inorganic additives dispersed in the matrix, wherein at least some of the inorganic additives are attached to the cellulose nano fibers and are distributed in the matrix. L'invention concerne un séparateur pour une batterie secondaire au lithium-ion, son procédé de production et une batterie secondaire l'utilisant. Une structure de séparateur comprend un support disposé à l'intérieur d'une batterie secondaire. Le support comprend une matrice polymère poreuse, des nanofibres de cellulose dispersées dans la matrice, et des additifs inorganiques dispersés dans la matrice, au moins certains des additifs inorganiques étant fixés aux nanofibres de cellulose et étant répartis dans la matrice.