Research on Proton Exchange Membranes for Improving Valve Regulated Sealed Lead-Acid Battery Cycling Performance

In this article, proton exchange membranes (PEMs) are used as separators for lead-acid batteries. Ion migration experiments are conducted to prove the efficacy of PEMs in blocking the passage of antimony ions. The cells are then assembled into a battery to undergo charge–discharge, life cycle, and electrolyte loss testing. The results show that PEMs are effective at reducing the migration of antimony ions from the cathode alloy grid to the anode while suppressing hydrogen formation and electrolyte loss, which greatly improves coulombic efficiency and cycle life of the battery.