Single-ion electrolytes for solid-state alkaline batteries
Disclosed herein are materials for use in battery separators. They include copolymers of a divinylbenzene and one or both of the monomers below (non-linked and linked). R is an n-alkylene group, and n is a positive integer. The copolymer made be made from tertiary amine monomers that are converted to quaternary amines. One battery includes a zinc anode, a silver cathode, and a tri-layer separator. The inner layer uses the linked monomer, and the outer layers use the non-linked monomer.
1 . A copolymer of a divinylbenzene and a compound having the formula:
wherein each R is an independently selected n-alkylene group; and
wherein n is a positive integer.
2 . The copolymer of claim 1 , wherein each R is methylene.
3 . The copolymer of claim 1 , wherein each R is n-butylene.
4 . The copolymer of claim 1 , wherein n is 8.
5 . A battery comprising:
an anode;
a cathode; and
a separator between the anode and the cathode;
wherein the separator comprises the copolymer of claim 1 .
6 . The battery of claim 5 ;
wherein the anode comprises zinc; and
wherein the cathode comprises silver.
7 . The battery of claim 5 , wherein the separator comprises a porous membrane permeated with the copolymer.
8 . The battery of claim 5 , wherein the separator comprises:
an inner layer comprising a first porous membrane permeated with the copolymer;
wherein R is n-butylene and n is 8; and
two outer layers surrounding the inner layer, each of the outer layers comprising a second porous membrane permeated with a second copolymer of a second divinylbenzene and a monomer having the formula: