Physical Properties and Chemical Analyses of Electrolytes for Sealed Silver-Zinc Batteries
Abstract
Electrolytes for sealed silver-zinc batteries have been analyzed for KOH, ZnO, K2CO3, and Ag2O at -25, 0, 25, and 40 C. In such electrolytes the solubility of Ag2O is in pure KOH electrolytes. The addition of K2CO3 while keeping the potassium ion concentration constant decreases the solubility of ZnO. These solutions require about 200 hours to reach steady state conditions. The conductivity of the electrolyte is decreased by the addition of ZnO. When 40 percent KOH is saturated with ZnO its conductivity is decreased to about 80 percent of the conductivity of pure 40 percent KOH. The addition of K2CO3 while keeping the potassium ion concentration constant further decreases the conductivity. The density of ZnO-saturated 40 percent KOH solutions shows that the volume of such a solution can be obtained by considering the volumes of solid ZnO and 40 percent KOH to be additive. The freezing points of ZnO- saturated 40 percent KOH solutions containing varying amounts of K2CO3 were found to be similar to that of pure KOH; namely -37 C. Extreme instances of supercooling were observed in which solidification sometimes did not occur at - 65C.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1969
- Accession Number
- AD0853490
Entities
People
- A. Fleischer
- Allan H. Reed
- E. A. Roeger Jr.
- J. Mccallum
Organizations
- Battelle Memorial Institute