PURPOSE: To improve the cycle characteristic of a battery by using a negative electrode on whose surface, which faces to positive electrode, a cis-form polyacetylene layer is set.
CONSTITUTION: Negative electrode 1, formed by punching lithium rolled plate in determined size, is press-attached on the inner surface of the base of a negative electrode can 10, and on negative electrode surface which faces to positive electrode 2, a polyacetylene layer 3 which is formed with cis-form polyacetylene film is set. For example, titanium sulfide of 80 weight percentage serving as active material, acetylene black of 10 weight percentage serving as electric conductive agent, and fluoro-resin of 10 weight percentage serving as binding agent are mixed and pressed to form positive electrode 2, and it is set on the inner surface of the base of a positive electrode can 20. A separator 4 constituted of polypropylene nonwoven fabric and other materials is impregnated with organic electrolytic solution which is made by dissolving, for example, perchloric acid lithium serving as solute in organic solvent, which is produced by mixing propylene carbonate with dimethoxyethane.
TERASHI KAZUO
SAKAI TAKASHI
