Process for producing electrode materials

Patent metadata

Field	Value
Publication number	US-9449729-B2
Application number	US-201113236699-A
Country	US
Kind code	B2
Filing date	Sep 20, 2011
Priority date	Sep 21, 2010
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

A process for producing electrode materials, which comprises treating a mixed oxide which comprises lithium and at least one transition metal as cations with at least one oxygen-containing organic compound of sulfur or phosphorus or a corresponding alkali metal or ammonium salt of an oxygen-containing organic compound of sulfur or phosphorus, or a fully alkylated derivative of an oxygen-containing compound of sulfur or phosphorus.

First claim

The invention claim is:

1. A process for producing an electrode material, which comprises
treating a mixed oxide which comprises lithium and at least one transition metal as cations with at least one fully alkylated derivative of an oxygen-containing compound of sulfur or phosphorus, optionally in the presence of a solvent, and
removing solvent and unconverted oxygen-containing compound of sulfur or phosphorous to provide said electrode material.

2. The process according to claim 1 , wherein the oxygen-containing compound of phosphorus or sulfur in a liquid phase or in a gas phase, is allowed to act on mixed oxide which comprises lithium and at least one transition metal as cations.

3. The process according to claim 1 , wherein mixed oxide is treated in a mixture together with at least one further constituent of electrodes, constituents of electrodes being selected from carbon and polymeric binder.

4. The process according to claim 1 , wherein mixed oxide is a compound represented by formula (I)
Li z M x O y   (I)

in which the variables are each selected as follows:
M is one or more metals of groups 3 to 12 of the Periodic Table of the Elements,
x is in the range from 1 to 2,
y is in the range from 2 to 4,
z is in the range from 0.5 to 1.5.

5. The process according to claim 1 , wherein fully alkylated derivatives of an oxygen-containing compound of phosphorus are selected from compounds of formula O═P(OR 1 ) 3 and dialkyl alkylphosphonates of formula R 3 —P(O)(OR 1 ) 2 , where the variables are each defined as follows:
R 1 is a C 1 -C 6 -alkyl,
R 3 are the same or different and are selected from the group consisting of phenyl and C 1 -C 6 -alkyl.

6. The process according to claim 1 , wherein fully alkylated derivatives of an oxygen-containing compound of phosphorus are selected from compounds of formula O═P(OR 1 ) 3 and dialkyl alkylphosphonates of formula O═PR 3 (OR 1 ) 2 , where the variables are each defined as follows:
R 1 is a C 1 -C 6 -alkyl,
R 3 are the same or different and are selected from the group consisting of phenyl and a C 1 -C 6 -alkyl.

7. The process according to claim 1 , wherein fully alkylated derivatives of an oxygen-containing compound of phosphorus is a compound of the formula O═PR 3 (OR 1 ) 2 , where R 1 and R 3 are each the same and are selected from methyl and ethyl.

8. The process of claim 1 , further comprising thermally treating said electrode material at a temperature ranging from 100 to 1000° C. after said removing.

Assignees

• Schulz-Dobrick Martin
• Ewald Bastian
• Lampert Jordan Keith
• Basf Se

Inventors

• Schulz-Dobrick Martin
• Ewald Bastian
• Lampert Jordan Keith

Classifications

• H01B1/08 Primary

  oxides · CPC title