Cabot Corporation
COMPOSITIONS, ELECTRODES AND LEAD-ACID BATTERIES HAVING IMPROVED LOW-TEMPERATURE PERFORMANCE

Abstract:

A composition suitable for a negative plate of lead-acid battery includes (a) a lead-based active material; (b) at least one material selected from the group consisting of a lignosulfonate and barium sulfate; and (c1) carbon black particles having a Brunauer-Emmett-Teller (BET) surface area greater than or equal to 90 m.sup.2/g and less than or equal to 900 m.sup.2/g, and an oil adsorption number (OAN) greater than or equal to 150 mL/100 g and less than or equal to 300 mL/100 g, or (c2) carbon black particles having a BET surface area greater than or equal to 40 m.sup.2/g and less than or equal to 500 m.sup.2/g, and graphenes particles. The composition has a theoretical negative active mass (NAM) BET surface area greater than or equal to 0.75 m.sup.2/g and less than or equal to 2 m.sup.2/g. The compositions can be used in electrodes, e.g., those used in lead-acid batteries.