Electrodepositable compositions and electrodeposited coatings including graphenic carbon particles

Patent metadata

Field	Value
Publication number	US-2020358075-A1
Application number	US-202016941344-A
Country	US
Kind code	A1
Filing date	Jul 28, 2020
Priority date	Sep 30, 2011
Publication date	Nov 12, 2020
Grant date	—

Abstract

Electrodepositable compositions including an aqueous medium, an ionic resin and particles including thermally produced graphenic carbon nanoparticles are disclosed. The compositions may also include lithium-containing particles. Electrodeposited coatings comprising a cured ionic resin, thermally produced graphenic carbon nanoparticle and lithium-containing particles are also disclosed. The electrodeposited coatings may be used as coatings for lithium ion battery electrodes.

First claim

We claim:

1 . An electrodepositable composition comprising:
(a) an aqueous medium; (b) an ionic resin; and (c) solid particles comprising:
(i) graphenic carbon particles comprising thermally produced graphenic carbon particles produced in a thermal zone at a temperature of from greater than 3,500° C. to 20,000° C., have a Raman spectroscopy 2D/G peak ratio of at least 1:1, and have an average aspect ratio of greater than 3:1; and
(ii) lithium-containing particles,
wherein the composition has a weight ratio of solid particles to ionic resin of at least 4:1.

2 . The electrodepositable composition of claim 1 , wherein the composition has a weight ratio of the thermally produced graphenic carbon particles to ionic resin of from 0.1:1 to 2:1.

3 . The electrodepositable composition of claim 1 , wherein the thermally produced graphenic carbon particles have a B.E.T. specific surface area of greater than 70 square meters per gram.

4 . The electrodepositable composition of claim 1 , wherein at least a portion of the thermally produced graphenic carbon particles comprise curved, curled, creased or buckled sheets.

5 . The electrodepositable composition of claim 1 , wherein the thermally produced graphenic carbon particles have a Raman spectroscopy 2D/G peak ratio of at least 1.2:1.

6 . The electrodepositable composition of claim 1 , wherein the lithium-containing particles comprise mixed metal oxides comprising Li and at least one element selected from Ni, Co, Fe, Mn, Al and P.

7 . The electrodepositable 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 solids in the composition.

8 . The electrodepositable composition of claim 1 , wherein the composition has a weight ratio of solid particles to ionic resin of at least 8:1.

9 . The electrodepositable 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.

10 . The electrodepositable composition of claim 1 , wherein the ionic resin comprises an anionic resin.

11 . A lithium ion battery electrode coating electrodeposited on a substrate, the electrodeposited coating comprising:
(a) a cured ionic resin; and (b) solid particles comprising:
(i) graphenic carbon particles comprising thermally produced graphenic carbon particles produced in a thermal zone at a temperature of from greater than 3,500° C. to 20,000° C., have a Raman spectroscopy 2D/G peak ratio of at least 1:1, and have an average aspect ratio of greater than 3:1; and
(ii) lithium-containing particles,
wherein the coating has a weight ratio of solid particles to cured ionic resin of at least 4:1.

12 . The lithium ion battery electrode coating of claim 11 , wherein the thermally produced graphenic carbon particles comprise 10 weight percent or less of the total weight of the solid particles.

13 . The lithium ion battery electrode coating of claim 11 , wherein the thermally produced graphenic carbon particles have a B.E.T. specific surface area of greater than 70 square meters per gram.

14 . The lithium ion battery electrode coating of claim 11 , wherein at least a portion of the thermally produced graphenic carbon particles comprise curved, curled, creased or buckled sheets.

15 . The lithium ion battery electrode coating of claim 11 , wherein the thermally produced graphenic carbon particles have a Raman spectroscopy 2D/G peak ratio of at least 1.2:1.

16 . The lithium ion battery electrode coating of claim 11 , wherein the lithium-containing particles comprise mixed metal oxides comprising Li and at least one element selected from Ni, Co, Fe, Mn, Al and P.

17 . The lithium ion battery electrode coating of claim 11 , wherein the lithium-containing particles are present in an amount of at least 50 percent by weight, based on the total weight of the solids in the composition.

18 . The lithium ion battery electrode coating of claim 11 , wherein the ionic resin comprises an anionic resin.

Assignees

• Ppg Ind Ohio Inc

Inventors

• Daughenbaugh Randy E
• Vanier Noel R
• Hellring Stuart D
• Hung Cheng-Hung

Classifications

• C25D15/00

  Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires · CPC title

• H01M4/131

  Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title

• H01M4/139

  Processes of manufacture · CPC title

• H01M4/622

  being polymers · CPC title

• H01M4/136

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