Carbonaceous materials for lead acid batteries

Patent metadata

Field	Value
Publication number	US-9985281-B2
Application number	US-201615190871-A
Country	US
Kind code	B2
Filing date	Jun 23, 2016
Priority date	Jun 24, 2015
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

Disclosed herein are compositions, which can be used to coat electrode plates, comprising at least one carbonaceous material and at least one additive, wherein the at least one additive comprises a metal ion selected from calcium, barium, potassium, magnesium, and strontium ion, and wherein the metal ion is present in an amount ranging from 0.5 wt. % to 3 wt. % relative to the total weight of carbonaceous material. Also disclosed are electrodes and lead acid batteries comprising such compositions, and methods of making the compositions.

First claim

The invention claimed is:

1. A composition comprising at least one carbonaceous material and at least one metal lignosulfonate, wherein the at least one metal lignosulfonate is selected from calcium, barium, potassium, magnesium, and strontium lignosulfonates, and the metal ion of the at least one metal lignosulfonate is present in an amount ranging from 0.5 wt. % to 3 wt. % relative to the total weight of the at least one carbonaceous material.

2. The composition of claim 1 , wherein the composition comprises composite particles comprising the at least one carbonaceous material and the at least one metal lignosulfonate.

3. The composition of claim 1 , wherein the composition is in the form of a powder or a pellet.

4. The composition of claim 1 , wherein the at least one carbonaceous material is interspersed with the at least one metal lignosulfonate.

5. The composition of claim 1 , wherein the at least one metal lignosulfonate comprises calcium lignosulfonate.

6. The composition of claim 1 , further comprising at least one lead-containing material.

7. The composition of claim 6 , wherein the lead-containing material is selected from lead, PbO, leady oxide, Pb 3 O 4 , Pb 2 O, and Pb SO 4 , hydroxides, acids, and metal complexes thereof.

8. The composition of claim 1 , further comprising at least one organic molecule expander that is different from the at least one metal lignosulfonate.

9. The composition of claim 1 , further comprising BaSO 4 .

10. An electrode comprising an electrode plate coated with the composition claim 1 .

11. A lead acid battery comprising the electrode of claim 10 .

12. The composition of claim 1 , wherein the composition comprises the at least one carbonaceous material present in an amount ranging from 40% to 45% by weight, relative to the total weight of the composition.

13. The composition of claim 1 , wherein the at least one metal lignosulfonate is present in an amount ranging from 5-10% by weight, relative to the total weight of the composition.

14. The composition of claim 1 , further comprising water in an amount ranging from 45-55% by weight, relative to the total weight of the composition.

Assignees

• Cabot Corp

Inventors

• Atanassova Paolina
• Dupasquier Aurelien L
• Koehlert Kenneth C
• Blizanac Berislav
• Korchev Andriy
• Sun Yipeng

Classifications

• H01M4/14

  Electrodes for lead-acid accumulators · CPC title

• H01M4/62 Primary

  Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title

• H01M10/06

  Lead-acid accumulators (semi-lead accumulators H01M10/20) · CPC title

• H01M4/663

  containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres · CPC title

• H01M4/606

  containing aromatic main chain polymers · CPC title