COMPOSITE SEPARATOR FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE INCLUDING SAME

• Main Authors: LEE, Joo-Sung, KIM, Bong-Tae, JUNG, Kil-An
• Format: Patent
• Language: English; French; German
• Published: 11.05.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

Disclosed is a composite separator for an electrochemical device, including: a porous polymer substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous polymer substrate and including a plurality of particles and a binder positioned on the whole or a part of the surface of the particles to connect the particles with one another and fix them, wherein the particles include inorganic particles, organic particles or both, and the composite separator has a melt-down temperature of 170°C or higher. An electrochemical device including the composite separator is also disclosed.