Journal of The Electrochemical Society · 1987 · 44 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceElectroanalytical MethodsElectrochemical EngineeringElectrochemistryElectrochemical CellsElectrochemical Energy StorageElectrochemical KineticsElectrode KineticsElectrode MaterialsWorking ElectrodesElectrochemical CharacterizationElectrochemical DurabilityElectrode Degradation MechanismsZinc Oxides
This paper discusses work to evaluate the durability of pasted‐rolled zinc electrodes prepared from a water‐based process in 26 Ah size zinc‐nickel oxide cells in 20 weight percent . An optimum Ca/Zn ratio of 0.58 was selected based upon data obtained using a potentiodynamic discharge technique and a specially designed small test cell to simulate a full size cell, experimental zinc electrodes with Ca/Zn ratios ranging from 0 to 0.8, SEM data, and zincate solubility considerations. The cells reached 400 to 550 cycles to 70% of the theoretical cell capacity. The loss in cell capacity seemed to be related mostly to a loss in utilization of the zinc electrode, and the shape change mechanism.