THE TESTING OF HERMETIC SEALS AND SEPARATORS, POSITIVE PLATE STUDIES, AND INVESTIGATIONS ON THE UNIFORMITY OF SEALED NICKEL-CADMIUM CELLS
Abstract
Special welding techniques have enabled final cover-to-can seals to be made and permitted the fabrication of sealed cells. The test data on these cells are given. Tests of 3 plate cells were carried out at 165 F. Overcharge tests on the HS series cells continued. The capacity after each charge was determined, and it is shown that charge below 500 ma resulted in decreasing capacity. If cells are evacuated at the end of charge, the pressure increases, due to release of oxygen gas by the nickel-oxide electrode. In 4 of 5 experimental cells, the pressure decreased again because of the reaction at the negative electrode. Tests on the doped nickel-oxide electrode at 100 F were completed. Discharge of the lithiated electrodes resulted in less total oxygen evolved. Spectrophotochemical and electrochemical methods were evaluated. While both seem equally satisfactory, the electrochemical method has additional applications. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1961
- Accession Number
- AD0270456
Entities
People
- H.n. Seiger