Electrode material and use thereof in lithium ion batteries
US-2016126538-A1 · May 5, 2016 · US
Polymer composition as a binder system for lithium-ion batteries
US10044032B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10044032-B2 |
| Application number | US-201515325440-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 26, 2015 |
| Priority date | Sep 4, 2014 |
| Publication date | Aug 7, 2018 |
| Grant date | Aug 7, 2018 |
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- Title
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Abstract
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The invention relates to an electrode coating for a lithium-ion battery, containing copolymer C or the salt thereof, copolymer C being synthesized by polymerizing a combined total of more than 70 wt % of vinyl-functional cyclic carbonate and one or more monomers from the group comprising acrylic acid and the derivatives thereof, the percentage by weight of vinyl-functional cyclic carbonate in relation to the weight of all monomers used being 5-90%.
First claim
Opening claim text (preview).
The invention claimed is: 1. An electrode coating for a lithium ion battery, said electrode coating comprising silicon as an active material and a copolymer C or a salt thereof, wherein the copolymer C or salt thereof can be prepared by polymerization of a combination of the following monomers: (a) vinyl-functional cyclic carbonate monomers, (b) one or more monomers selected from the group consisting of acrylic acid and derivatives thereof, and optionally (c) at least one further monomer, where monomers (a) and (b) together constitute more than 70% by weight of the combination of monomers, and monomer (a) constitutes 5-90% by weight of the combination of monomers. 2. The electrode coating as claimed in claim 1 , wherein the acrylic acid in the copolymer C constitutes 30-85% by weight of the combination of monomers. 3. The electrode coating as claimed claim 2 , wherein the monomers from which the copolymer C is prepared are selected from the group consisting of vinyl-functional cyclic carbonate monomers, acrylic acid monomers and derivatives of acrylic acid monomers. 4. The electrode coating as claimed in claim 3 , wherein a number average molar mass of the copolymer C is Mn=500-30000. 5. The electrode coating as claimed in claim 4 , which contains a sodium or lithium salt of the copolymer C. 6. The electrode coating as claimed claim 1 , wherein the monomers from which the copolymer C is prepared are selected from the group consisting of vinyl-functional cyclic carbonate monomers, acrylic acid monomers and derivatives of acrylic acid monomers. 7. The electrode coating as claimed in claim 1 , wherein a number average molar mass of the copolymer C is Mn=500-30000. 8. The electrode coating as claimed in claim 1 , which contains a sodium or lithium salt of the copolymer C.
Assignees
Inventors
Classifications
Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols · CPC title
Electrodes based on metals, Si or alloys · CPC title
- C08F218/14Primary
Esters of polycarboxylic acids · CPC title
of electrodes based on metals, Si or alloys · CPC title
- H01M4/366Primary
as layered products · CPC title
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- What does patent US10044032B2 cover?
- The invention relates to an electrode coating for a lithium-ion battery, containing copolymer C or the salt thereof, copolymer C being synthesized by polymerizing a combined total of more than 70 wt % of vinyl-functional cyclic carbonate and one or more monomers from the group comprising acrylic acid and the derivatives thereof, the percentage by weight of vinyl-functional cyclic carbonate in r…
- Who is the assignee on this patent?
- Wacker Chemie Ag
- What technology area does this patent fall under?
- Primary CPC classification C08F218/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 07 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).