Title:
METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL, KILN, AND HEATING FURNACE
Document Type and Number:
WIPO Patent Application WO/2021/116819
Kind Code:
A1
Abstract:
Provided is a method for producing a positive electrode active material having excellent producibility. Also provided is a manufacturing device with which it is possible to produce a positive electrode active material in a highly productive manner. A method for producing a positive electrode active material including lithium, a transition metal, oxygen, and fluorine, the method having a step for inhibiting fixation during heating of a material being treated. Examples of the fixation-inhibiting step include stirring performed by causing a furnace to rotate during heating, stirring performed by causing a container containing the material being treated to vibrate during heating, and grinding performed between a plurality of heating steps. Using these production methods makes it possible to produce a positive electrode active material in which distribution of additives in a layer part is excellent.
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Inventors:
MOMMA YOHEI (JP)
SAITO JO (JP)
OCHIAI TERUAKI (JP)
MIKAMI MAYUMI (JP)
SAITO JO (JP)
OCHIAI TERUAKI (JP)
MIKAMI MAYUMI (JP)
Application Number:
PCT/IB2020/061298
Publication Date:
June 17, 2021
Filing Date:
December 01, 2020
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
F27B5/06; F27B5/16; F27B7/20; F27B7/32; F27B7/34; F27B7/36; F27B9/24; F27B9/30; F27B9/36; F27B9/38; F27D25/00; H01M4/505; H01M4/525
Domestic Patent References:
| WO2019103522A2 | 2019-05-31 | |||
| WO2012132071A1 | 2012-10-04 |
Foreign References:
| JPH11307098A | 1999-11-05 | |||
| JP2012048968A | 2012-03-08 | |||
| JPH1087332A | 1998-04-07 | |||
| JP2013167423A | 2013-08-29 | |||
| JP2016038116A | 2016-03-22 | |||
| JP2005273926A | 2005-10-06 |
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