ELECTRICAL POWER STORAGE DEVICES
An electrical storage device includes high surface area fibers (e.g., shaped fibers and/or microfibers) coated with carbon (graphite, expanded graphite, activated carbon, carbon black, carbon nanofibers, CNT, or graphite coated CNT), electrolyte, and/or electrode active material (e.g., lead oxide) in electrodes. The electrodes are used to form electrical storage devices such as electrochemical batteries, electrochemical double layer capacitors, and asymmetrical capacitors.
1 - 35 . (canceled)
36 . A lead-acid battery comprising:
a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode; and
a carbon additive comprising fibers comprising a graphite, wherein the positive electrode, negative electrode, the separator and the additive are contained within a housing having electrolyte.
37 . The lead-acid battery of claim 36 , wherein the carbon additive comprises a combination of carbons at least one of which is said graphite.
38 . The battery of claim 37 , wherein the carbon additive comprises a combination of carbons including said graphite and a carbon layer.
39 . The battery of claim 36 , wherein the carbon additive comprises high surface area graphite fibers.
40 . The battery of claim 36 , wherein the high surface area carbon additive is expanded graphite.
41 . The battery of claim 36 , wherein the carbon additive is provided in electrode active material.
42 . The lead-acid battery of claim 41 , wherein the carbon additive is provided in negative electrode active material.
43 . The battery of claim 36 , wherein the carbon additive fibers have a cross sectional diameter ranging from about 1 micron to about 100 microns.
44 . The battery of claim 36 , wherein the carbon additive fibers are configured to help optimize charge acceptance.
45 . The battery of claim 36 , wherein the carbon additive is porous.
46 . A lead-acid battery comprising:
a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode; the positive electrode, negative electrode, and separator contained within a housing having electrolyte; and
a conductive additive comprising fibers having a conductive core and a surface formed of a different material.
47 . The battery of claim 46 , wherein the conductive core comprises a graphite.
48 . The battery of claim 46 , wherein the conductive additive is porous.
49 . The battery of claim 46 , wherein the fibers have a cross sectional diameter ranging from about 1 micron to about 100 microns.
50 . The battery of claim 46 , wherein the fibers are configured to help optimize charge acceptance.