Nickel-cadmium battery cell with improved electrolyte reservoir

Abstract From the Canadian patent

Nickel-cadmium battery cell 10 has a plurality of cadmium negative electrode plates 24, 26 and 28 and a plurality of alternate nickel positive electrode page 30 and 32. The separator space therebetween is occupied by separator 34, 36, 38 and 40. The enhanced thickness of the separator space, more than 200 microns serves, as a reservoir which provides an increased amount of potassium hydroxide electrolyte so that as the nickel electrode grows during cycling and withdraws electrolyte from the separator by compression or crushing of the separator and by capillary action into the nickel electrode, sufficient electrolyte remains for an enhanced battery cell life. The increased interelectrode …