STUDIES ON THE STORAGE OF ELECTROCHEMICALLY IMPREGNATED NICKEL-CADMIUM CELLS

The storage procedure commonly used for space-quality nickel cadmium cells is to keep the fully discharged cells in the shorted condition. These cells use chemically impregnated positive and negative electrodes and maintain good capacity during such storage. By contrast, space-quality nickel/cadmium cells developed in-house with electrochemically impregnated electrodes exhibit a fall in capacity. It is suggested that segregation of cobalt is the cause of capacity reduction after shorted-mode storage.