NDLI: Development of uniform and predictable battery materials for nickel-cadmium aerospace cells

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Development of uniform and predictable battery materials for nickel-cadmium aerospace cells

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1972
Description	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: (1) chemical conversion, (2) electrochemical conversion, and (3) high temperature electrochemical impregnation. The test parameter on which the conclusion regarding the manufacturing variables are 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 and the differences between the various 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 plate preparations.
File Size	4459037
Page Count	107
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19730001323
Archival Resource Key	ark:/13960/t6644hc3s
Language	English
Publisher Date	1972-01-31
Access Restriction	Open
Subject Keyword	Auxiliary Systems Electrodes Performance Tests Electrical Properties Electric Discharges Impregnating Nickel Cadmium Batteries Porous Plates Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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