Antimony poisoning in lead-acid batteries

Abstract 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 versus Hg/Hg 2 SO 4 the antimony deposition on lead electrodes is time dependent only; at more negative potentials the deposition rate decreases with over-voltage. At potentials