| 摘要 |
PROBLEM TO BE SOLVED: To enhance safety by maintaining battery performance, realize high capacity by improving a utilization factor of an active material, and reduce a cost by omitting a safety securing element, by providing a positive electrode and a negative electrode having porous high polymer electrolyte or the porous high polymer electrolyte, and holding electrolyte having the volume of a specific rate of the hole volume. SOLUTION: Porous high polymer electrolyte swelling by or wet with electrolyte is provided in a positive electrode and a negative electrode, and/or is used between both electrodes as a film or the like instead of a separator, and even electrolyte having the volume of 30 to 95% of the hole volume uniformly spreads over the whole electrodes. Ions diffuse at high speed in free electrolyte held in a hole of a porous high polymer together with gas, and even if the electrolyte is gasified by heating or the like, a local pressure increase is restrained by the gas in the vicinity of the electrodes, and restriction of utilization of an active material is relieved. It is desirable to use one or more among copolymers containing a polyvinylidene fluoride, polyacrylonitrile, polyvinyl chloride and a monomer to constitute these in a structure as the porous high polymer. |
