Improved coated separators, lithium batteries, and related methods

A technology for separators and lithium batteries, which is applied in the direction of lithium batteries, batteries, battery electrodes, etc., and can solve problems such as reducing battery cycle efficiency

Pending Publication Date: 2020-09-01
CELGARD LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soft short circuit can reduce th

Method used

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  • Improved coated separators, lithium batteries, and related methods
  • Improved coated separators, lithium batteries, and related methods
  • Improved coated separators, lithium batteries, and related methods

Examples

Experimental program
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Embodiment

[0166] (1) At least the following coating compositions are contemplated.

[0167] Table 1

[0168]

[0169]

[0170]

[0171]

[0172] CJ - heat-resistant granules, comprising a binder of a lactam-derived polymer, optionally with water, an aqueous solvent or a non-aqueous solvent as solvent.

[0173] CM-heat resistant granules and PVA binder, optionally with water, aqueous solvent or non-aqueous solvent as solvent.

[0174] CS - heat resistant particles with acrylic binder, optionally with water, aqueous solvent or non-aqueous solvent as solvent.

[0175] a - any crosslinking agent described herein

[0176] b- Any cryogenic shutdown agent described herein

[0177] c - any adhesive described herein

[0178] d- Any thickener described herein

[0179] e - Any friction reducer described herein

[0180] f - Any high temperature shutdown agent described herein

[0181] (2) Exemplary improved shutdown implementation

[0182] As noted above, the addition of a low-t...

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Abstract

The invention relates to a new improved coatings, layers or treatments for porous substrates, including battery separators coated or treated porous substrates, including coated battery separators, li-ion batteries including such coatings. According to the invention, improved coatings for porous substrates, including battery separators, and new and/or improved coated porous substrates, including battery separators, new or improved coatings for porous substrates, including battery separators, which comprise at least a matrix material or a polymeric binder, heat-resistant particles, and at leastone component selected from the group consisting of a cross-linker, a low-temperature shutdown agent, an adhesion agent, and a thickener, and new and/or improved coated porous substrates, including battery separators, where the coating comprises at least a matrix material or a polymeric binder, heat-resistant particles, and at least one component selected from the group consisting of a cross-linker, a low-temperature shutdown agent, an adhesion agent, a thickener, a friction-reducing agent, and a high-temperature shutdown agent are disclosed.

Description

[0001] This application is generally related to PCT / US2017 / 043266, filed July 21, 2017, the entire contents of which are incorporated herein by reference. [0002] This application claims the benefit and priority of U.S. Provisional Patent Application 62 / 620,087, filed January 22, 2018, under 35 U.S.C. § 119(e), and is hereby incorporated by reference in its entirety. technical field [0003] The present application relates to new and / or improved coatings for porous substrates including battery separators or spacers; and / or to coated porous substrates including coated battery separators; and / or To batteries or cells comprising such coatings or coated separators; and / or to related methods including methods of manufacture and / or use thereof. According to at least certain embodiments, the present application is directed to new or improved coatings for porous substrates, including battery separators comprising at least a polymeric binder and heat-resistant particles and which may ...

Claims

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Application Information

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IPC IPC(8): H01M2/16H01M10/0525H01M50/403H01M50/489H01M50/491
CPCH01M10/052Y02E60/10H01M50/446H01M50/403H01M50/491H01M50/489H01M50/409H01M50/449H01M10/0525H01M10/4235H01M10/0569H01M2300/0037H01M50/417H01M50/531H01M50/443Y02P70/50H01M50/434H01M4/382H01M4/405H01M2004/027H01M2220/20
Inventor张峥明迈克尔·B·莱恩全寅植爱德华·克鲁格余翔罗尼·E·史密斯斯蒂芬·雷纳兹马俊青丹尼尔·R·亚历山大
OwnerCELGARD LLC