To obtain a separator for a nonaqueous electrolyte battery that has an excellent nonaqueous electrolyte permeability into an electrode and an excellent electrolyte retentivity of the electrode and achieves a large capacity, a high energy density and a good high-temperature charge characteristic. A separator 3 used for a nonaqueous electrolyte battery is formed by disposing a porous layer 2 made of inorganic fine particles and a resin binder on a porous separator substrate 1, the resin binder is made of at least one resin selected from the group consisting of polyimide resins, polyamide resins and polyamideimide resins and the molecular chain of the resin has a halogen atom content of 10% to 30% by weight, and the content of the resin binder in the porous layer is 5% by weight or more.
为了获得一种用于非
水电解质电池的隔膜,该隔膜具有优异的非
水电解质渗透性进入电极和电极的优异电解质保留能力,并实现大容量、高能量密度和良好的高温充电特性。用于非
水电解质电池的隔膜3是通过在多孔隔膜基材1上放置由无机细颗粒和
树脂粘合剂制成的多孔层2而形成的,所述
树脂粘合剂由聚
酰亚胺树脂、聚酰胺
树脂和聚酰胺
亚胺树脂中的至少一种
树脂组成,并且
树脂的分子链具有10%至30%的卤素原子含量,在多孔层中的
树脂粘合剂含量为5%或更高。