To provide a thin air cell which has a high energy density and excels in a long period reliability.
The thin air cell comprises an electricity generating element, having an air diffusing paper and a water repellent film, sealed with an outer package composed of a first and a third sheet layers covering the air pole side and the negative pole side and a second sheet layer which is located between the peripheral parts of the first and the third sheet layers, and jointed to both the sheet layers. The above sheet layers are each composed of a thin film obtained by laminating a polymer film having an alkali resistance and a hydrogen gas permeability, and a polymer film having a gas blocking property, wherein the first and the third sheet layers are disposed with the polymer film having a hydrogen gas permeability on the inner side.
SHIMAMURA HARUNARI
KOSHIBA NOBUHARU
Shinichi Kawasaki
Koichi Naka