Aspects of the Role of Lignin Additives in Pasted Lead Electrodes

Abstract

The effect of the cations of lignosulfonate salts on the physical and electrochemical characteristics of pasted-type lead electrodes has been studied. The cations studied were H+, Na+, NH4+, Zn++, Ca++, and Ba++. The lignosulfonate anion concentration was held constant by maintaining constant u.v. absorption at 280 mμ. wavelengths. The cations affected the hydrogen evolution potential at the end of formation and at the onset of passivation potential, and they affected the capacity retentive characteristics during cycling. Of all the lignosulfonates tested, the sodium salt imparted the best capacity retentive characteristics. © 1977, The Electrochemical Society, Inc. All rights reserved.