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

A lithium-ion battery, lithium-ion technology, applied in battery pack parts, metal material coating process, lithium battery and other directions, can solve the problems of preventing current collectors from short-circuiting, increasing weight, emissions, etc., to save materials and Effects of energy costs, reduction of manufacturing steps, minimization of waste

Pending Publication Date: 2021-07-09
INTERSEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, these previous methods resulted in wastage of material during the slurry application step and indiscriminately applied the coating to the entire surface, and proved to be necessary to apply a sufficient amount of inorganic oxide for good insulation or to achieve dimensional stability. At the same time without clogging the pores of the membrane or adding unnecessary weight or adding unnecessary layer thickness is difficult
Additionally, the use of solvents may present health and fire hazards and generate regulated emissions
In addition, previous methods did not propose a means to prevent current collectors from shorting

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

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[0015] definition

[0016] The indefinite articles (a, an), the definite articles (the), "at least one" and "one or more" are used interchangeably to indicate that at least one of the terms is present; may There are multiple such terms, unless the context clearly dictates otherwise. All numerical values ​​of parameters (eg, quantities or conditions) in this specification, including the appended claims, should be understood to be modified in all instances by the term "about" whether or not "about" actually occurs before the numerical value. "About" means that the stated value allows some slight imprecision (somewhat approximation to the exact value; approximately or reasonably close to the value; nearly). If "about" provides imprecision other than this ordinary meaning as understood in the art, then "about" as used herein means at least variation that can result from ordinary methods of measuring and using these parameters. Furthermore, the disclosure of a range includes the ...

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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.

Description

technical field [0001] The present invention relates to a method of applying an insulating metal oxide coating to a lithium ion battery component. Background technique [0002] This section provides information that is helpful in an understanding of the invention and is not necessarily prior art. [0003] Lithium-ion electrochemical cells typically include a negative electrode layer (anode during battery discharge), a positive electrode layer (cathode during battery discharge), a thin porous separator interposed in face-to-face contact between parallel facing electrode layers layer, a liquid lithium-containing electrolyte solution that fills the pores of the separator and is in contact with the facing surfaces of the electrode layers to transport lithium ions during repeated battery discharge and recharge cycles, and a metal on the outside of the other side of the electrode layers A thin layer of current collectors. [0004] Large lithium-ion battery packs, such as those u...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/139H01M4/13H01M10/0525
CPCH01M4/139H01M4/13H01M10/0525C23C16/04C23C16/40C23C16/513H01M4/0404H01M4/0428H01M4/62H01M4/667H01M50/403H01M50/434H01M50/449H01M4/664H01M4/0402Y02E60/10C23C16/453H01M2004/027H01M2004/028
Inventor X·盖登J·M·齐格尔鲍尔刘璐
Owner INTERSEL CORP