POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE RECHARGEABLE BATTERY AND. NON-AQUEOUS ELECTROLYTE RECHARGEABLE BATTERY INCLUDING THE SAME

• Main Authors: BAEK JINSEOK, KUNIHIRO INUI
• Format: Patent
• Language: English; Korean
• Published: 25.07.2024
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; DYES; ELECTRICITY; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

전지의 내부 온도의 상승을 충분히 억제하여 안전성을 향상시키면서도, 전기 저항이나 사이클 특성 등의 전지 성능에 대해서도 향상시킬 수 있는 비수전해질 이차 전지용 양극을 제공한다. 상기 비수전해질 이차 전지용 양극은 양극 집전체, 상기 양극 집전체 상에 적층된 양극 합제층, 및 상기 양극 합제층의 상기 집전체와는 반대측 면에 적층된 난연화층을 포함하고, 상기 난연화층이, 금속 수산화물과 난연화제를 포함하는 복합 입자를 함유하는 것이며, 상기 복합 입자의 승온 탈리 가스 질량분석계(TDS-MS)에 의한 80℃로부터 1400℃까지의 탈리 P2량(MS1)이 200×10-6mol/g 이상 2500×10-6mol/g 이하이며, TDS-MS에 의한 80℃로부터 200℃까지의 탈리 H2O량(MS2)이 50×10-6mol/g 이상 1000×10-6mol/g 이하이다. A positive electrode for a non-aqueous electrolyte rechargeable battery is provided that can sufficiently suppress a rise in an internal temperature of the battery to improve safety, while also improving battery performance such as electrical resistance and cycle characteristics. A positive electrode for a non-aqueous electrolyte rechargeable battery includes a positive electrode current collector, a positive electrode mixture layer on the positive electrode current collector, and a flame retardant layer on a surface of the positive electrode mixture layer opposite to the current collector, wherein the flame retardant layer includes composite particles including a metal hydroxide and a flame retardant, an amount of desorbed P2 (MS1) of the composite particles from about 80 °C to about 1400 °C as determined by thermal desorption gas mass spectrometry (TDS-MS) is greater than or equal to about 200×10-6 mol/g and less than or equal to about 2500×10-6 mol/g, and an amount of desorbed H2O (MS2) from about 80 °C to about 200 °C by TDS-MS is greater than or equal to about 50×10-6 mol/g and less than or equal to about 1000×10-6 mol/g.