Decay of the zincate concentration gradient at an alkaline zinc cathode after chargingThe study was carried out by observing the decay of the zincate concentration gradient at a horizontal zinc cathode after charging. This decay was found to approximate first order kinetics as expected from a proposed boundary layer model. The decay half life was shown to be a linear function of the thickness of porous zinc deposit on the cathode indicating a very rapid transport of zincate through porous zinc metal. The rapid transport is attributed to an electrochemical mechanism. The data also indicated a relatively sharp transition between the diffusion and convection transport regions. The diffusion of zincate ion through asbestos submerged in alkaline electrolyte was shown to be comparable with that predicted from the bulk diffusion coefficient of the zincate ion in alkali.
Document ID
19800028900
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kautz, H. E. (NASA Lewis Research Center Cleveland, OH, United States)
May, C. E. (NASA Lewis Research Center Cleveland, Ohio, United States)