Patent ID: 7326499

Claim:
An alkaline storage battery comprising: a positive electrode comprising nickel hydroxide; a negative electrode; and an electrolyte layer interposed between said positive electrode and said negative electrode, said electrolyte layer comprising a water absorbent polymer and an aqueous alkaline solution, said water absorbent polymer being obtained by saponification of a copolymer comprising 100 parts by weight of monomer (A) and 0.01 to 10 parts by weight of monomer (B), said monomer (A) is at least one selected from the group consisting of an alkyl acrylic acid ester and an alkyl methacrylic acid ester, and said monomer (B) is at least one selected from the group consisting of an aromatic hydrocarbon having two vinyl groups and an aliphatic hydrocarbon having two vinyl groups and one or more fluorine atoms.