INSULATING LAYER, BATTERY CELL SHEET, AND BATTERY

• Main Authors: UNEMOTO ATSUSHI, OKUMURA TAKEFUMI, HIROOKA MASAYUKI, KAWAJI JUN
• Format: Patent
• Language: English; Japanese
• Published: 24.10.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To improve battery safety.SOLUTION: The insulating layer includes: a non-aqueous electrolyte, an insulating layer particle, and an insulating layer binder. The non-aqueous electrolyte has a non-aqueous solvent having a volatilization temperature of less than 246°C. When the insulating layer is heated from the reference temperature, a temperature at which weight of the insulating layer is reduced by 10% with respect to weight of the insulation layer at the reference temperature higher by 3°C or more than a temperature at which weight of the non-aqueous solvent is reduced by 10% with respect to weight of the non-aqueous solvent at the reference temperature.SELECTED DRAWING: Figure 1 【課題】電池の安全性を向上させる。【解決手段】非水電解液、絶縁層粒子、および絶縁層バインダを有する絶縁層であって、非水電解液は、揮発温度が246℃より小さい非水溶媒を有し、絶縁層を基準温度より昇温させた場合に、基準温度における絶縁層の重量に対して絶縁層の重量が10％減少する温度が、基準温度の非水溶媒の重量に対して非水溶媒の重量が10％減少する温度より、3℃以上大きい絶縁層。【選択図】図1