Antimony poisoning in lead-acid batteries

✍ Scribed by W. Böhnstedt; C. Radel; F. Scholten

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 465 KB
• Volume: 19
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(87)87006-4

✦ Synopsis

Linear potential sweep measurements were conducted using rotating lead-disc electrodes in sulfuric acid electrolyte containing antimony. Within the range investigated hydrogen evolution at the negative electrode is shown to be a monotonic function of the quantity of antimony deposited on the electrode surface. In the potential range -950 mV to -1150 mV uersus Hg/Hg,S04 the antimony deposition on lead electrodes is time dependent only; at more negative potentials the deposition rate decreases with overvoltage. At potentials <-1320 mV antimony purging occurs. Various additives to the electrolyte were investigated to determine their ability to suppress the hydrogen evolution; aromatic aldehydes and wood flour were found to be effective. A possible mechanism is discussed.

Zusammenfassung

Linear-Potential-Sweep Messungen unter Verwendung rotierender Bleischeibenelektroden wurden in antimonfreier und antimonhaltiger HzS04 durchgefiihrt. Es wird gezeigt,