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US 2020/0028138 A1Published application
Nonaqueous electrolyte battery separator and nonaqueous electrolyte battery
AssigneeToray Industries, Inc.
InventorsKohei Ideta, Mitsuru Sugihara, Natsuko Chayama, Takanobu Omori
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Abstract
Provided is a nonaqueous electrolyte battery separator including a porous film (I) containing a polyolefin resin; and a porous layer (II) containing an inorganic filler, a water-soluble polymer having a structure represented by the following general formula (1), a water-insoluble polymer and a basic compound. The nonaqueous electrolyte battery separator is excellent in shape stability under a high temperature condition of 160 to 200° C.
Claims11
A nonaqueous electrolyte battery separator comprising:
- a porous film (I) containing a polyolefin resin;
- and
- a porous layer (II) containing an inorganic filler, a water-soluble polymer having a structure represented by the following general formula (1), a water-insoluble polymer and a basic compound:
- wherein R1 and R2 each independently represent a hydroxyl group, a carboxyl group or a sulfonic acid group;
- R3 and R4 each independently represent a halogen, a nitro group or a monovalent organic group having 1 to 10 carbon atoms;
- a and b each independently represent an integer of 1 or more, and c and d each independently represent an integer of 0 or more;
- provided that a+c and b+d each independently represent an integer of 1 to 4;
- n1 represents an integer of 0 to 3;
- and X1 represents a single bond, CH2, SO2, CO, O, S, C(CH3)2 or C(CF3)2.
6 more elements
Dependencies are inferred from the claim text.