POLYMER MEMBRANE, FILM, SECONDARY BATTERY SEPARATOR, SECONDARY BATTERY, VEHICLE, UNMANNED TRANSPORT AIRCRAFT, ELECTRONIC APPARATUS, AND STATIONARY POWER SUPPLY

• Main Authors: KIYOTA AYA, SHIMAZU AYAKO, TSUKUDA AKIMITSU, IKOMA HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 28.09.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a polymer membrane having ion conductivity and lithium dendrite resistance that is important for using a metallic lithium negative electrode.SOLUTION: A polymer membrane having a coefficient of surface elasticity of 500 MPa or more, ion conductivity of 1.0×10-5 S/cm or more, and air permeability of 5000 sec/100 mL or more after being immersed in an electrolytic solution for 19 hours. A film having the polymer membrane on at least one side of a polyolefin-based porous membrane base material. A separator for a secondary battery using the polymer membrane or the film. A secondary battery using the separator for a secondary battery, and a vehicle including the secondary battery, an unmanned transport aircraft, an electronic apparatus, a stationary power supply.SELECTED DRAWING: None 【課題】本発明の目的は、イオン伝導性、金属リチウム負極を使用するために重要なリチウムデンドライト耐性を有するポリマー膜を提供することにある。【解決手段】電解液に１９時間浸漬後の表面弾性率が５００ＭＰａ以上であり、イオン伝導度が１．０×１０－５Ｓ／ｃｍ以上であり、透気度が５０００秒／１００ｍＬ以上であるポリマー膜、ポリオレフィン系多孔質膜基材の少なくとも片面に前記ポリマー膜を有するフィルム、前記ポリマー膜または前記フィルムを用いた二次電池用セパレータ、前記二次電池用セパレータを用いた二次電池、並びに、前記二次電池を含む乗り物、無人輸送機、電子機器、及び定置電源。【選択図】なし