A composition that improves the deep cycle performance of valve-regulated lead-acid batteries filled with gelled electrolyte

摘要

A composition for use in a negative active material in a valve-regulated lead-acid battery, comprising: a carbon material having a BET surface area of 150 m2 / g to 2000 m2 / g and has a D90 value greater than 5 μm ; wherein the amount of carbon material ranges from 0.1% by weight to 1.5% by weight based on the total weight of the composition; wherein the carbon material comprises an activated carbon, a graphite, or a combination thereof; and comprising a sulfated lead oxide, a barium sulfate, a fiber, an oxyignin and water.