Carbon fiber electrode with enhanced active material and lead acid battery having same

Patent metadata

Field	Value
Publication number	US-12542283-B2
Application number	US-202117797261-A
Country	US
Kind code	B2
Filing date	Feb 5, 2021
Priority date	Feb 5, 2020
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

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.

First claim

We claim:

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.

Assignees

• Cps Tech Holdings Llc

Inventors

• Spence Matthew A
• Korinek Paul D

Classifications

• H01M2004/027

  Negative electrodes · CPC title

• H01M10/08

  Selection of materials as electrolytes · CPC title

• H01M4/747

  Woven material · CPC title

• H01M4/73

  for lead-acid accumulators, e.g. frame plates · CPC title

• H01M4/68

  for use in lead-acid accumulators · CPC title