Composite anode materials for lithium ion batteries

Patent metadata

Field	Value
Publication number	US-9882210-B2
Application number	US-201113301447-A
Country	US
Kind code	B2
Filing date	Nov 21, 2011
Priority date	May 28, 2009
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

The present invention provides compositions and methods of making Sn-MCx-C and Sb-MOx-C nanostructured anode compositions that exhibit excellent capacity retention with high capacity and rate capability that alleviate the volume expansion encountered with alloy anodes during the charge-discharge process.

First claim

What is claimed is:

1. A method of making a composition, comprising:
providing antimony oxide particles;
providing metal particles;
providing at least one conductive carbon compound;
mixing together the antimony oxide particles with the metal particles and at least one conductive carbon compound,
subjecting the mixture to a mechanical milling process, wherein during the mechanical milling process oxygen from the antimony oxide particles is transferred to the metal to oxidize the metal, which, in combination with at least one conductive carbon compound, forms an Sb-MOx-C nanocomposite, where M is Al, Mg, Ti, V, Cr, Mn, Fe, Co, Ni, Zr, Mo, W, Nb, Ta, or combinations thereof.

2. The method of claim 1 , wherein the mechanical milling process is a ball milling process.

3. The method of claim 1 , wherein the mechanical milling process is performed for a time sufficient to allow reduction of substantially all of the antimony oxide to antimony metal.

4. The method of claim 1 , wherein the metal particles are magnesium particles, vanadium particles, chromium particles, manganese particles, iron particles, cobalt particles, nickel particles, zirconium particles, tungsten particles, niobium particles, tantalum particles, or combinations thereof.

5. The method of claim 1 , wherein the metal particles comprise aluminum particles.

6. The method of claim 1 , wherein the metal particles comprise titanium particles.

7. The method of claim 1 , wherein the metal particles comprise molybdenum particles.

8. The method of claim 1 , wherein the conductive carbon particles comprise particles of activated carbon.

9. The method of claim 1 , wherein the weight ratio of antimony oxide particles and metal particles to the conductive carbon compound is greater than 1.

10. The method of claim 1 , wherein the weight ratio of antimony oxide particles and metal particles to the conductive carbon compound is about 80:20.

11. The method of claim 1 , wherein the metal particles comprise aluminum particles, and wherein the molar ratio of antimony oxide particles to aluminum particles is about 1:2.

12. The method of claim 1 , wherein the metal particles comprise titanium particles, and wherein the molar ratio of antimony oxide particles to titanium particles is about 2:3.

13. The method of claim 1 , wherein the metal particles comprise molybdenum particles, and wherein the molar ratio of antimony oxide particles to molybdenum particles is about 2:3.

Assignees

• Manthiram Arumugam
• Yoon Sukeun
• Univ Texas

Inventors

• Manthiram Arumugam
• Yoon Sukeun

Classifications

• H01M4/587

  for inserting or intercalating light metals · CPC title

• H01M4/364

  as mixtures · CPC title

• H01M4/387

  Tin or alloys based on tin · CPC title

• H01M4/0404

  by coating on electrode collectors · CPC title

• H01M4/1393

  of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title