Development of uniform and predictable battery materials for nickel--cadmium aerospace cells. Final report, 8 May 1968--31 January 1972

Technical Report · Mon Jan 31 04:00:00 EST 1972

OSTI ID:7295678

The objective of this study was to analyze battery materials and manufacturing methods with the aim of developing uniform and predictable battery plates for nickel--cadmium aerospace cells. The results are presented of an extensive factorially designed experiment aimed at illuminating, in a comparative study, the effect of plaque preparation, plaque thickness, impregnation process, and loading level with active material. The following impregnation processes were investigated: chemical conversion, electrochemical conversion, and high-temperature electrochemical impregnation. The test parameter on which the conclusion regarding the manufacturing variables is based was the capacity change during a simulated near-earth orbit cycle regime. As operational variables, the effect of various charge and discharge rates was investigated. During the 100 test cycles, overall capacity changes of positive plates were found to be small. Plates prepared by the high-temperature electrochemical impregnation of slurry-coated plaque (at the conditions used) showed surface buildup of active material. They also retained slightly less of their capacity during cycling compared to other preparations.

• Research Organization: Tyco Labs., Inc., Waltham, Mass. (USA)
• OSTI ID: 7295678
• Report Number(s): N-73-10050; NASA-CR-130094
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
DIMENSIONS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ENERGY STORAGE SYSTEMS
FABRICATION
IMPREGNATION
MATERIALS
METAL-METAL OXIDE BATTERIES
NICKEL-CADMIUM BATTERIES
OPERATION
PERFORMANCE TESTING
PLATES
SATELLITES
TESTING
THICKNESS