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Analysis for nickel (3 and 4) in positive plates from nickel-cadmium cells
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Lewis, Harlan L. |
| Copyright Year | 1994 |
| Description | The NASA-Goddard procedure for destructive physical analysis (DPA) of nickel-cadmium cells contains a method for analysis of residual charged nickel as NiOOH in the positive plates at complete cell discharge, also known as nickel precharge. In the method, the Ni(III) is treated with an excess of an Fe(II) reducing agent and then back titrated with permanganate. The Ni(III) content is the difference between Fe(II) equivalents and permanganate equivalents. Problems have arisen in analysis at NAVSURFWARCENDIV, Crane because for many types of cells, particularly AA-size and some 'space-qualified' cells, zero or negative Ni(III) contents are recorded for which the manufacturer claims 3-5 percent precharge. Our approach to this problem was to reexamine the procedure for the source of error, and correct it or develop an alternative method. |
| File Size | 268817 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940023604 |
| Archival Resource Key | ark:/13960/t9g49mr54 |
| Language | English |
| Publisher Date | 1994-02-01 |
| Access Restriction | Open |
| Subject Keyword | Energy Production And Conversion Permanganates Spacecraft Power Supplies Nickel Cadmium Batteries Nickel Plate Energy Storage Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
