To provide a means capable of improving liquid-retaining property of an electrolytic solution in a gel electrolyte, without hardly making the thermoplasticity of the electrolyte reduced, in a battery that uses the gel electrolyte composed of thermoplastic physical gel.
In this battery which has at least one single battery layer where a positive electrode active material layer, an electrolyte layer, and a negative active material layer are made to be laminated, in this order, and in which at least one of the positive electrode active material layer, the electrolyte layer, and the negative electrode active layer contains the gel electrolyte composed of the thermoplastic physical gel, a non-crosslinkable PAO, having a weight average molecular weight of 5,000-4,000,000 and expressed by chemical Formula 1 (in the Formula, R is an alkylene group of carbon atom number 1 to 10, and n is an integer of 100 to 100,000) is made to be contained in the gel electrolyte.
NEMOTO KOICHI
HISAMITSU YASUNARI
Yasuo Nara
Etsuko Saito
Katsuyuki Utani
Toshifumi Fujii