AIR-ZINC BATTERY

PROBLEM TO BE SOLVED: To prevent the lowering of a utilization ratio due to moisture penetration by waterproofing an air-zinc battery. SOLUTION: This air-zinc battery has an air diffusion layer 3, a water repellent film, a positive electrode body and a separator accommodated in a positive electrode...

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Bibliographic Details
Main Authors TSUKAGOSHI ATSUSHI, ISHIHARA NAOMI
Format Patent
LanguageEnglish
Published 30.06.2000
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:PROBLEM TO BE SOLVED: To prevent the lowering of a utilization ratio due to moisture penetration by waterproofing an air-zinc battery. SOLUTION: This air-zinc battery has an air diffusion layer 3, a water repellent film, a positive electrode body and a separator accommodated in a positive electrode can 1 having air holes 2 and disposed with a negative electrode case filled with a gel zinc negative electrode through the separator. A polymer resin porous membrane having repellency, such as PTFE fine porous membrane, is used as the air diffusion layer 3 and this air diffusion layer 3 is pressed against the bottom of the positive electrode can 1 with about 1.0 to 3.0 kgf/cm2 of pressure. Thereby no clearance is generated between air holes and the air diffusion layer 3 so that water penetration from the air holes can be prevented. In the case that the air diffusion layer 3 is pressed in the air holes, effects are further enhanced.
Bibliography:Application Number: JP19980354654