Lithium ion battery components

Patent metadata

Field	Value
Publication number	US-10211452-B2
Application number	US-201514973356-A
Country	US
Kind code	B2
Filing date	Dec 17, 2015
Priority date	Dec 17, 2015
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

A lithium ion battery component includes a support selected from the group consisting of a current collector, a negative electrode, and a porous polymer separator. A lithium donor is present i) as an additive with a non-lithium active material in a negative electrode on the current collector, or ii) as a coating on at least a portion of the negative electrode, or iii) as a coating on at least a portion of the porous polymer separator. The lithium donor has a formula selected from the group consisting of Li8-yMyP4, wherein M is Fe, V, or Mn and wherein y ranges from 1 to 4; Li10-yTiyP4, wherein y ranges from 1 to 2; LixP, wherein 0<x≤3; and Li2CuP.

First claim

What is claimed is:

1. A lithium ion battery component, comprising:
a support selected from the group consisting of a current collector, a negative electrode, and a porous polymer separator; and
a lithium donor present i) as an additive mixed with a non-lithium active material in the negative electrode which is formed on the current collector, or ii) as a coating on at least a portion of the negative electrode, or iii) as a coating on at least a portion of the porous polymer separator, the lithium donor having a formula selected from the group consisting of Li 8-y Fe y P 4 , wherein y ranges from 1 to 4 and Li 10-y Ti y P 4 , wherein y ranges from 1 to 2.

2. The lithium ion battery component as defined in claim 1 wherein:
the lithium donor is present as the additive mixed with the non-lithium active material in the negative electrode which is formed on the current collector;
the non-lithium active material is present in an amount ranging from greater than 0 wt % to about 98 wt % of a total wt % of the negative electrode; and
the lithium donor is present in an amount ranging from greater than 0 wt % to about 50 wt % of a total wt % of the negative electrode.

3. The lithium ion battery component as defined in claim 2 wherein the non-lithium active material is selected from the group consisting of i) a carbon-based material; ii) silicon (Si), germanium (Ge), tin (Sn), lead (Pb), antimony (Sb), bismuth (Bi), zinc (Zn), aluminum (Al), or cadmium (Cd); iii) alloys or intermetallic compounds of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Ti, iron (Fe), manganese (Mn), or Cd with other elements; iv) oxides, carbides, nitrides, sulfides, phosphides, selenides, or tellurides of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Fe, Ti, Mn, Co, or Cd; and v) any combination of i, ii, iii, and iv.

4. The lithium ion battery component as defined in claim 1 wherein the lithium donor is Li 9 TiP 4 .

5. The lithium ion battery component as defined in claim 1 wherein the lithium donor is present as the coating on the portion of the porous polymer separator.

6. A lithium ion battery, comprising:
a positive electrode;
a negative electrode;
a porous polymer separator positioned between the positive electrode and the negative electrode; and
a lithium donor present in the negative electrode as an additive with a non-lithium active material, or present as a coating on at least a portion of the negative electrode, or present as a coating on at least a portion of a surface of the porous polymer separator that faces the negative electrode, the lithium donor being selected from the group consisting of Li 8-y Fe y P 4 , wherein y ranges from 1 to 4 and Li 10-y Ti y P 4 , wherein y ranges from 1 to 2.

7. The lithium ion battery as defined in claim 6 wherein:
the lithium donor is present in the negative electrode as the additive with the non-lithium active material;
the non-lithium active material is present in an amount ranging from greater than 0 wt % to about 98 wt % of a total wt % of the negative electrode; and
the lithium donor is present in an amount ranging from greater than 0 wt % to about 50 wt % of a total wt % of the negative electrode.

8. The lithium ion battery as defined in claim 7 wherein the non-lithium active material is selected from the group consisting of i) a carbon-based material; ii) silicon (Si), germanium (Ge), tin (Sn), lead (Pb), antimony (Sb), bismuth (Bi), zinc (Zn), aluminum (Al), or cadmium (Cd); iii) alloys or intermetallic compounds of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Ti, iron (Fe), manganese (Mn), or Cd with other elements; iv) oxides, carbides, nitrides, sulfides, phosphides, selenides, or tellurides of Si, Ge, Sn, Pb, Sb, Bi, Zn, Al, Fe, Ti, Mn, Co, or Cd; and v) any combination of i, ii, iii, and iv.

9. The lithium ion battery as defined in claim 6 wherein the lithium donor is Li 9 TiP 4 .

10. The lithium ion battery as defined in claim 6 wherein the lithium donor is present as the coating on the portion of the surface of the porous polymer separator that faces the negative electrode.

11. The lithium ion battery as defined in claim 6 wherein the lithium donor is in a form of particles having a particle size ranging from about 10 nm to about 50 microns.

12. A method for forming a lithium ion battery component, the method comprising:
mixing a powdered lithium donor with an non-aqueous liquid to form a slurry, the lithium donor selected from the group consisting of Li 8-y Fe y P 4 , wherein y ranges from 1 to 4 and Li 10-y Ti y P 4 , wherein y ranges from 1 to 2;
coating the slurry on a support selected from the group consisting of a current collector, a negative electrode, and a porous polymer separator; and
drying the slurry.

13. The method as defined in claim 12 wherein the slurry is coated on the current collector, and wherein prior to the mixing of the powdered lithium donor with the non-aqueous liquid, the method further comprises mixing the powdered lithium donor with a powdered non-lithium active material to form a powder mixture.

14. The method as defined in claim 13 wherein:
the non-lithium active material is present in an amount ranging from greater than 0 wt % to about 98 wt % of a total wt % of the powder mixture; and
the lithium donor is present in an amount ranging from greater than 0 wt % to about 50 wt % of a total wt % of the powder mixture.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Jiang Meng
• Powell Jr Bob R
• Kim Jung-Hyun

Classifications

• H01M4/0404

  by coating on electrode collectors · CPC title

• H01M4/136

  Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy · CPC title

• H01M4/364 Primary

  as mixtures · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/058

  Construction or manufacture · CPC title