Battery polymeric material, battery separator, battery insulating packing, and lithium battery

A battery separator formed by a battery polymeric material composed of two types of repeating units, wherein a first type of repeating unit has the formula

• and wherein a second type of repeating unit has the formula
• wherein A and B are different and are selected from the group consisting of oxygen, a methylene group, an isopropylidene group, a carbonyl group, a carbonyldioxy group, a carboxylic acid anhydride group, an amide group, an ureylene group, a sulfonyl group, sulfur, and a carbonyloxy group.

A lithium battery, wherein

• a positive electrode, a negative electrode, a non-aqueous electrolyte, and a battery separator separating said positive electrode and negative electrode are provided in a battery case, and said battery separator is formed by a battery polymeric material composed of a single type of repeating unit, wherein said repeating unit has the formula
• where A is selected from the group consisting of oxygen, a methylene group, an isopropylidene group, a carbonyl group, a carbonyldioxy group, a carboxylic acid anhydride group, an amide group, and a sulfonyl group.

A lithium battery, wherein

• a positive electrode, a negative electrode, a non-aqueous electrolyte, and a battery separator separating said positive electrode and negative electrode are provided in a battery case, and said battery separator is formed by the battery polymeric composed of two types of repeating units, wherein a first type of repeating unit has the formula
• and wherein a second type of repeating unit has the formula
• wherein A and B are different and are selected from the group consisting of oxygen, a methylene group, an isopropylidene group, a carbonyl group, a carbonyldioxy group, a carboxylic acid anhydride group, an amide group, an ureylene group, a sulfonyl group, sulfur, and a carbonyloxy group.