Surface treatment agent for electrode material, positive electrode active material, current collector foil, negative electrode active material, conductive aid, electrode, battery, method for manufacturing positive electrode active material, method for manufacturing current collector foil, method for manufacturing negative electrode active material, method for manufacturing conductive aid, and method for manufacturing electrode

Patent metadata

Field	Value
Publication number	US-2025132344-A1
Application number	US-202419000188-A
Country	US
Kind code	A1
Filing date	Dec 23, 2024
Priority date	Jun 24, 2022
Publication date	Apr 24, 2025
Grant date	—

Abstract

A surface-treating agent for an electrode material includes a pyridine skeleton and fluorine. A positive electrode active material, a current collector foil, a negative electrode active material, each treated with the surface-treating agent, an electrode, and a battery, are provided. A method for producing a positive electrode active material, a method for producing a current collector foil, a method for producing a negative electrode active material, a method for producing a conductive aid, and a method for producing an electrode which are capable of improving the cycle characteristics of batteries and preventing or reducing corrosion of current collector foils, are provided.

First claim

1 . A surface-treating agent for an electrode material, which is an N-fluoropyridinium compound or a fluorinated halogen-pyridine-HF complex.

2 . The surface-treating agent for the electrode material according to claim 1 , wherein:
the N-fluoropyridinium compound is 1,1′-difluoro-2,2′-bipyridinium bis(tetrafluoroborate); and the fluorinated halogen-pyridine-HF complex is an IF 5 -pyridine-HF complex.

3 . The surface-treating agent for the electrode material according to claim 1 , wherein the surface-treating agent is for a positive electrode active material, a current collector foil, a negative electrode active material, a conductive aid, or an electrode.

4 . A positive electrode active material treated with the surface-treating agent according to claim 1 .

5 . A current collector foil treated with the surface-treating agent according to claim 1 .

6 . A negative electrode active material treated with the surface-treating agent according to claim 1 .

7 . A conductive aid treated with the surface-treating agent according to claim 1 .

8 . An electrode comprising at least one selected from the group consisting of a positive electrode active material, a current collector foil, and a conductive aid,
wherein the positive electrode active material, the current collector foil, and the conductive aid are treated with the surface-treating agent according to claim 1 .

9 . An electrode comprising at least one selected from the group consisting of a negative electrode active material, a current collector foil, and a conductive aid,
wherein the negative electrode active material, the current collector foil, and the conductive aid are treated with the surface-treating agent according to claim 1 .

10 . A battery comprising the electrode according to claim 8 .

11 . A battery comprising the electrode according to claim 9 .

12 . A method comprising:
bringing a positive electrode active material into contact with a solution comprising the surface-treating agent according to claim 1 to form a positive electrode active material treated with the surface-treating agent.

13 . A method comprising:
bringing a current collector foil into contact with a solution comprising the surface-treating agent according to claim 1 to form a current collector foil treated with the surface-treating agent.

14 . A method comprising:
bringing a negative electrode active material into contact with a solution comprising the surface-treating agent according to claim 1 to form a negative electrode active material treated with the surface-treating agent.

15 . A method comprising:
bringing a conductive aid into contact with a solution comprising the surface-treating agent according to claim 1 to form a conductive aid treated with the surface-treating agent.

16 . A method comprising:
bringing an electrode comprising a current collector foil and a positive electrode active material into contact with a solution comprising the surface-treating agent according to claim 1 .

17 . A method comprising:
bringing an electrode comprising a current collector foil and a negative electrode active material into contact with a solution comprising the surface-treating agent according to claim 1 .

Assignees

• Daikin Ind Ltd

Inventors

• Fujiwara Kae
• Yamazaki Shigeaki
• Terada Junpei
• Jakelski Rene
• Bresser Dominic
• Kunzel Matthias
• Kazzazi Arefeh
• Kumar Vidur
• Passerini Stefano

Classifications

• C07D213/89

  with hetero atoms directly attached to the ring nitrogen atom · CPC title

• H01M4/366

  as layered products · CPC title

• H01M4/0404

  by coating on electrode collectors · CPC title

• H01M10/4235 Primary

  Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence) · CPC title

• H01M4/667

  in the form of layers, e.g. coatings · CPC title