Coatings for components of electrochemical cells

Patent metadata

Field	Value
Publication number	US-10991925-B2
Application number	US-201716098654-A
Country	US
Kind code	B2
Filing date	Jun 19, 2017
Priority date	Jun 21, 2016
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

Coatings for components of electrochemical cells (e.g., layers for protecting electrodes) are generally described. Associated compounds, articles, systems, and methods are also generally described.

First claim

What is claimed is:

1. An article, comprising:
an electrode comprising lithium as an electroactive material; and
a hybrid layer comprising an inorganic material and an organic polymer proximate a surface of the electrode, the hybrid layer further comprising a tantalum-containing compound, wherein the tantalum-containing compound comprises a compound of the formula: TaX 5-y-z (A) y (OH) z , where, X═F, Br, Cl, or I; y=0 to 5, z=0 to 5, and y+z=1 to 5; and A=an oxygen-based anion.

2. An article of claim 1 , wherein z=0.

3. An article of claim 2 , wherein A is a species selected from the group consisting of: an alkoxide having a carbon number of 1 to 8, acetylacetonate, 2-ethylhexyloxide, and acetate.

4. An article of claim 3 , wherein A=OCH 3 .

5. An article of claim 4 , wherein X═F.

6. An article of claim 5 , wherein X═Br.

7. An article of claim 1 , wherein the article further comprises a separator on which the hybrid layer is deposited.

8. An article of claim 7 , wherein the electrode is an anode.

9. An article of claim 8 , wherein the hybrid layer is positioned between the separator and the anode.

10. An article of claim 9 , wherein the organic polymer comprises a polyetheramine species.

11. An article of claim 9 , wherein the inorganic material comprise alumina nanoparticles.

12. An article of claim 1 , wherein the electrode is an anode.

13. An article of claim 1 , wherein the hybrid layer comprises a crosslinked network of inorganic nanoparticles and the organic polymer.

14. An article of claim 1 , further comprising:
a separator comprising pores; wherein
the tantalum-containing compound is in at least a portion of the pores of the separator.

15. The article of claim 14 , wherein the hybrid layer is deposited on the separator.

16. The article of claim 15 , wherein the hybrid layer comprises a crosslinked network of inorganic nanoparticles and the organic polymer.

17. An article of claim 15 , wherein the organic polymer comprises a polyetheramine species.

18. An article of claim 15 , wherein the inorganic material comprise alumina nanoparticles.

19. An article of claim 1 , wherein the organic polymer comprises a polyetheramine species.

20. An article of claim 1 , wherein the inorganic material comprise alumina nanoparticles.

Assignees

• Sion Power Corp

Inventors

• Wang Zhongchun
• Du Hui
• Scordilis-Kelley Chariclea
• Kelley Tracy Earl

Classifications

• H01M50/403

  Manufacturing processes of separators, membranes or diaphragms · CPC title

• H01M50/491

  Porosity · CPC title

• H01M50/489

  Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/446

  Initial charging measures · CPC title