US2023207774A1PendingUtilityA1

Method of insulating lithium ion electrochemical cell components with metal oxide coatings

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Assignee: INTECELLS INCPriority: Dec 23, 2019Filed: Mar 2, 2023Published: Jun 29, 2023
Est. expiryDec 23, 2039(~13.4 yrs left)· nominal 20-yr term from priority
Inventors:Xiaohong Q. GaydenJoseph M. ZiegelbauerLu Liu
C23C 16/513H01M 50/434H01M 4/0428H01M 50/403H01M 50/449H01M 4/139H01M 4/0404H01M 4/62C23C 16/04C23C 16/40H01M 10/0525H01M 4/667H01M 4/13H01M 4/664H01M 4/0402Y02E60/10C23C 16/453H01M 2004/027H01M 2004/028
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Claims

Abstract

Disclosed is a method for making a lithium-ion cell by depositing from an atmospheric plasma deposition device inorganic oxide particles produced from a precursor in an atmospheric plasma as a coating on a surface of a lithium-ion electrochemical cell component. The coating formed by the inorganic oxide particles may be an insulating coating or may provide dimensional stability during a thermal runaway.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method for making a lithium-ion cell, comprising:
 depositing from an atmospheric plasma deposition device inorganic oxide particles produced from a precursor in an atmospheric plasma as a coating on a surface of a lithium-ion electrochemical cell component.   
     
     
         2 . A method according to  claim 1 , wherein the coating has a thickness of from about 10 nanometers to about 10 micrometers. 
     
     
         3 . A method according to  claim 1 , wherein the coating has a thickness of from about 70 nanometers to about 800 nanometers. 
     
     
         4 . A method according to  claim 1 , wherein the coating covers from about 0.5% to 100% of the area of the surface. 
     
     
         5 . A method according to  claim 1 , wherein the metal oxide is an oxide of a member selected from the group consisting of silicon, titanium, zirconium, aluminum, cerium, and combinations thereof. 
     
     
         6 . A method according to  claim 1 , wherein the coating forms a repeating pattern on the surface. 
     
     
         7 . A method according to  claim 1 , wherein the lithium-ion electrochemical cell component is a porous separator and the coating provides dimensional stability. 
     
     
         8 . A method according to  claim 7 , wherein the coating does not appreciably reduce porosity of the porous separator. 
     
     
         9 . A method according to  claim 1 , wherein the lithium-ion electrochemical cell component is a current collector or an electrode-coated current collector component; and wherein the coating increases electrical insulation. 
     
     
         10 . A method according to  claim 9 , wherein the coating insulates at least up to about 5 volts. 
     
     
         11 . A lithium ion cell prepared by the method according to  claim 1 .

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