Electrodepositable compositions and electrically conductive substrates prepared therewith

Patent metadata

Field	Value
Publication number	US-2020350093-A1
Application number	US-202016926943-A
Country	US
Kind code	A1
Filing date	Jul 13, 2020
Priority date	Nov 27, 2012
Publication date	Nov 5, 2020
Grant date	—

Abstract

The present invention is directed to electrodepositable compositions comprising: (a) an aqueous medium; (b) an ionic resin; and (c) solid particles comprising: (i) lithium-containing particles, and (ii) electrically conductive particles, wherein the composition has a weight ratio of the solid particles to the ionic resin of at least 17:1, and wherein the weight ratio of the lithium-containing particles to the electrically conductive particles is at least 3:1. The present invention is additionally directed to a battery electrode comprising a substrate and a coating applied to a surface of the substrate. The coating is deposited from the electrodepositable composition described above.

First claim

What is claimed is:

1 . An electrodepositable composition comprising:
(a) an aqueous medium; (b) an ionic resin; and (c) solid particles comprising:
(i) lithium-containing particles, and
(ii) electrically conductive particles;

wherein the composition has a weight ratio of the solid particles to the ionic resin of at least 17:1, and wherein the weight ratio of the lithium-containing particles to the electrically conductive particles is at least 3:1.

2 . The composition of claim 1 , wherein the ionic resin is anionic.

3 . The composition of claim 1 , wherein the lithium-containing particles comprise LiCoO 2 , LiNiO 2 , LiFePO 4 , LiCoPO 4 , LiMnO 2 , LiMn 2 O 4 , Li(NiMnCo)O 2 , and/or Li(NiCoAl)O 2 .

4 . The composition of claim 1 , wherein the lithium-containing particles are present in an amount of at least 50 percent by weight, based on the total weight of the solid particles.

5 . The composition of claim 1 , wherein the electrically conductive particles comprise electrically conductive carbon particles.

6 . The composition of claim 1 , wherein the electrically conductive particles comprise electrically conductive carbon nanotubes.

7 . The composition of claim 1 , wherein the composition has a weight ratio of lithium-containing particles to electrically conductive particles in the composition of at least 5:1.

8 . The composition of claim 1 , wherein the composition has a total solids content of 1 to 5 percent by weight, based on the total weight of the composition.

9 . The composition of claim 1 , wherein the lithium particles are present in the electrodepositable composition in an amount of at least 50 percent by weight based on the total weight of solids in the composition.

10 . The composition of claim 1 , wherein the ionic resin is cationic.

11 . A substrate at least partially coated with the electrodepositable composition of claim 1 .

12 . The substrate of claim 11 , wherein the substrate comprises a carbon-coated aluminum foil.

13 . A battery electrode comprising a substrate and a coating applied to a surface of the substrate, wherein the coating is deposited from a curable electrodepositable composition comprising;
(a) an aqueous medium; (b) an ionic resin; and (c) solid particles comprising:
(i) lithium-containing particles, and
(ii) electrically conductive particles;

wherein the composition has a weight ratio of the solid particles to the ionic resin of at least 17:1 and wherein the weight ratio of the lithium-containing particles to the electrically conductive particles is at least 3:1.

14 . The battery electrode of claim 13 , wherein the substrate comprises a carbon-coated aluminum foil.

Assignees

• Ppg Ind Ohio Inc

Inventors

• Daughenbaugh Randy E
• Hellring Stuart D

Classifications

• C09D7/61

  inorganic · CPC title

• H01M4/136

  Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy · CPC title

• C09D5/448

  characterised by the additives used (C09D5/4403 - C09D5/4476, C09D5/4492 take precedence) · CPC title

• H01M4/0457

  from dispersions or suspensions; Electrophoresis · CPC title

• C25D13/16

  Wires; Strips; Foils · CPC title