Capacitor electrodes for lead-acid battery with surface-modified additives

摘要

Electrodes, which may be composite capacitor electrodes, include carbon fibers, illustratively chopped carbon fibers having an aspect ratio of from about 100-5000, have been treated with a non-ionic surfactant, specifically the polyoxyethyleneglycol octophenyl ether, Triton X-100, to increase the hydrophilicity of the fibers. The capacitive electrodes prepared with the surface-modified carbon fibers exhibit increased charge acceptance.

主权项

1. A lead-acid battery, comprising:
a capacitor electrode, comprising:
a lead-based current collector; andcapacitor active material disposed on the current collector, wherein the capacitor active material comprises:
a carbon capacitive material,a conductive carbon material having a lower surface area than the carbon capacitive material, andcarbon fibers treated with polyethylene glycol-based surfactant which is adsorbed onto the carbon fibers to produce surface modified carbon fibers.