THE KINETICS OF THE PbSO4/PbO2 ELECTRODE AT LOW TEMPERATURES

Authors
  1. Valeriote, E.M.
  2. Gallop, L.D.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
Direct and alternating current potentiostatic and potentiodynamic measurements w ere applied to the study of lead dioxide formation in sulphuric acid at temperat ures from -50 degree C to 0 degree C. The initial oxidation reaction kinetics we re found to be controlled by two-dimensional nucleation and growth, followed by diffusion through the completed surface layer. From the model and derived result s, the heights of the nuclei were determined as a function of temperature and ap plied potential, and from both the linear scan voltammetry and potential-step me thods the diffusion parameters of the rate controlling step were obtained. These results permit an improved description of the sequential anodic oxidation proce sses.
Report Number
717 — Papers presented at the Ninth International Power Sources Symposium, Brighton, England, September 1974
Date of publication
15 May 1975
Number of Pages
21
DSTKIM No
75-03446
CANDIS No
26442
Format(s):
Hardcopy;Originator's fiche received by DSIS

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