Experiments on the Discharge Mechanism of the Manganese Dioxide Electrode
Warren C. Vosburgh, Pao-Soong Lou · Journal of The Electrochemical Society · 1961
Complete discharge curves of electrodeposited electrodes in an electrolyte of p H 7.5 are compared. Oxide on the electrode at the end of discharge had the composition for for . In the later portions of both discharges the rate of increase of Mn ++ in the electrolyte is equivalent to the current. The effect of larger concentrations of Mn ++ in the electrolyte on the discharge curve is shown. A method is developed for the dissolving of surface oxides from a partially or wholly discharged electrode and measuring Mn(II) and Mn(III). The amounts recovered were only a small fraction of Mn(IV) reduced even when no Mn++ was appearing in solution.