Accession Number : AD0862506

Title :   Electrode Migration and Reaction Processes Occurring Within Alkaline-Zinc Batteries.

Descriptive Note : Final rept. Dec 65-Sep 69,

Corporate Author : CALVIN COLL GRAND RAPIDS MI

Personal Author(s) : Dirkse, Thedford P.

Report Date : DEC 1969

Pagination or Media Count : 182

Abstract : The open circuit, anodic, and cathodic behavior of the zinc electrode in KOH solutions have been studied. In each case a literature reveiw has also been made. The open circuit behavior of zinc has been studied over a range of KOH concentrations at 25 and 44C. The effect of amalgamation and of the zincate ion on this process has also been noted. The cathodic behavior of zinc was studied by obtaining voltage-current curves in a range of KOH concentrations and at temperatures of 0 to 50C. The effect of zincate ion and the effect of amalgamation on these processes were also studied. The anodic zinc processes were observed by making polarographic, cyclic voltammetric, potentiostatic, and voltage decay measurements. This was done over a range of KOH concentrations with and without the presence of zincate ions. The effect of surface active materials on the cycle life of silver-zinc cells and on the double layer capacitance of the zinc electrode was measured. A few nickel-zinc cells were assembled and cycled. The effect of circulating the electrolyte at a modest rate was also studied. (Author)

Descriptors :   *ZINC), (*ALKALINE BATTERIES, ELECTRODES), (*ELECTRODES, ELECTROCHEMISTRY, SURFACE ACTIVE SUBSTANCES, IONS, MERCURY ALLOYS, ELECTROLYTES, HYDROXIDES, POTASSIUM COMPOUNDS.

Subject Categories : Electrochemical Energy Storage

Distribution Statement : APPROVED FOR PUBLIC RELEASE