SILVER-CADMIUM BATTERY PROGRAM
Abstract
A research and development program leading to improved, long life, sealed silver-cadmium batteries for aerospace applications is discussed. A silver electrode was utilized which yielded up to 50% of its capacity at the AgII oxide voltage plateau and the balance at the AgI oxide voltage plateau. Several separator systems were tested with regard to obtaining maximum cycle life. The best separator combination consisted of single layers of Dynel- Polypor WA (coarse nylon base)-Fibrous sausage casing - V, each enclosing the positive electrodes in the order listed. Sixty 7 ampere-hour cells, the AG-7HS, were life tested in a 90 minute cycle at several depths of discharge and at several temperatures, utilizing constant current and constant voltage recharge methods. Three thousand cycles were achieved at a 17% depth at 78 F. Charging problems are discussed. It was found that a charge routine consisting of a combination of constant current followed by constant potential was better than constant current charging or constant potential charging alone.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1963
- Accession Number
- AD0402981
Entities
People
- G. Rampel
- J. Liska
- R. C. Shair