Accession Number : AD0662737

Title :   EVALUATION OF FOREIGN S-12 SILVER-ZINC CELLS.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J ELECTRONIC COMPONENTS LAB

Personal Author(s) : Wagner,Otto C.

Report Date : OCT 1967

Pagination or Media Count : 28

Abstract : Two foreign S-12 silver-zinc cells used to power a transceiver were evaluated. Low temperature performance was significantly poorer than that of comparable US cells, while room temperature performance was equivalent. Dissection of one S-12 cell showed that it was designed with an excess of silver powder and that it contained a separator wrap which will limit the useful life of the cell to three to four months, particularly for applications in the tropics. Another shortcoming of the S-12 cells is that the zinc negatives are wrapped in cellophane membrane, a design feature which will decrease the zinc capacity at high rates and/or low temperatures. To maintain maximum capacity under extreme environmental conditions it is standard practice in the US to wrap the silver positives in cellophane membrane. (Author)

Descriptors :   (*STORAGE BATTERIES, ALKALINE BATTERIES), SILVER, ZINC, ELECTRODES, BATTERY SEPARATORS, PERFORMANCE(ENGINEERING), BATTERY COMPONENTS, ELECTRIC BATTERIES

Subject Categories : Electrochemical Energy Storage

Distribution Statement : APPROVED FOR PUBLIC RELEASE