Fabrication and Investigation of Nickel-Alkaline Cells. Part 1. Fabrication of Nickel-Hydroxide Electrodes Using Electrochemical Impregnation Techniques

Abstract
Several electrochemical impregnation techniques for deposition of active Nickel-Hydroxide inside nickel sinters have been investigated. The most favorable means of impregnation appears to be deposition from alcoholic nitrate solutions. Formation cycling of electrodes made from the various techniques has been performed using 20-50% overcharge for 10-30 cycles. Some electrodes show capacities as high as 9.5 ampere-hours per cubic inch after these cycles. The alcohol process has been scaled to pilot production, and several 20-25 A-H vented Nickel-Cadmium cells were constructed using cadmium electrodes fabricated from another electrochemical technique. These cells show vastly improved charge acceptance, at a wide temperature range, over state-of-the-art vented aircraft cells and improved cycle life at high temperatures and deep depths of discharge.

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