Carbon fiber electrode with enhanced active material and lead acid battery having same
An lead-acid battery is described. The battery includes a carbon fiber electrode having a paste containing a novel additive including one or more carbons, organic expanders, and barium sulfate.
1 . An electrode comprising a carbonized fiber current collector having a paste with an additive that improves charge acceptance, with the additive having components, the components consisting of:
an organic expander;
barium hydroxide; and
ultrafine barium sulfate, with the ultrafine barium sulfate having a particle size range from 0.04 micrometers to 0.8 micrometers and having an amount of nucleation sites greater than a second amount of nucleation sites for a barium sulfate having a particle size range greater than 1 micrometer for a charge acceptance greater than the barium sulfate having the particle size range greater than 1 micrometer.
2 . The electrode of claim 1 , wherein the additive includes carbon.
3 . The electrode of claim 1 , wherein the carbonized fiber current collector comprises a woven carbon fiber mat.
4 . The electrode of claim 1 , wherein the carbonized fiber current collector comprises a felted carbon fiber mat.
5 . The electrode of claim 1 , wherein the carbonized fiber current collector is a negative carbonized fiber current collector.
6 . A lead-acid battery with an electrode defined in claim 1 , wherein the additive comprises carbons, organic expanders, and barium sulfate.
7 . The lead-acid battery of claim 6 , wherein the additive includes barium hydroxide.
8 . The lead-acid battery of claim 6 , wherein an electrolyte in the battery includes sulfuric acid, and wherein a reaction between the barium hydroxide and sulfuric acid produce barium particles in situ.
9 . The lead-acid battery of claim 6 , wherein the carbonized fiber current collector comprises a woven carbon fiber mat.
10 . The lead-acid battery of claim 6 , wherein the carbonized fiber current collector comprises a felted carbon fiber mat.
11 . The lead-acid battery of claim 6 , wherein the carbonized fiber current collector is a negative carbonized fiber current collector.
12 . The lead-acid battery of claim 6 , the carbonized fiber current collector further includes a negative paste.
13 . A lead-acid battery, comprising:
a carbon fiber current collector having an electrochemically active material and a fiber mat portion, the electrochemically active material having one or more additives, with at least one of the one or more additives having components, the components consisting of:
an organic expander
barium hydroxide; and
ultrafine barium sulfate, with the ultrafine barium sulfate having a particle size range from 0.1 microns to 0.8 microns and having an amount of nucleation sites greater than an second amount of nucleation sites for a barium sulfate particle having a particle size range greater than 1 micron for a charge acceptance greater than the barium sulfate particle having a particle size range greater than 1 micron; and
the fiber mat portion having a plurality of carbonized fibers.
14 . The lead-acid battery of claim 13 , the fiber mat is a woven carbon fiber mat.
15 . The lead-acid battery of claim 13 , the fiber mat is a felted carbon fiber mat.
16 . The lead-acid battery of claim 13 , the carbon fiber current collector further includes a negative electrochemically active material.
17 . The lead-acid battery of claim 16 , wherein the active material includes barium hydroxide.
18 . The lead-acid battery of claim 13 , wherein the carbon fiber current collector is a negative carbon fiber current collector.
19 . The lead-acid battery of claim 16 , wherein the carbon fiber current collector comprises a carbon, an organic expander, and barium sulfate.