Title:
METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES, AND LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/171089
Kind Code:
A1
Abstract:
The present invention provides a method for producing a positive electrode active material for lithium ion secondary batteries, which comprises: a water washing step wherein a lithium nickel composite oxide containing lithium (Li), nickel (Ni) and an element M (M) (the element M is composed of at least one element that is selected from among Mn, V, Mg, Mo, Nb, Ti, Co and Al) is cleaned with water and filtered, thereby obtaining a cleaned cake; a charging step wherein the cleaned cake, which is an object to be dried, and a tungsten compound that does not contain lithium are charged into a dryer; and drying step wherein the object to be dried is dried by the dryer, while being flowed. The charging step has a time period where the cleaned cake and the tungsten compound that does not contain lithium are supplied to the dryer at the same time.
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Inventors:
ODA SHUHEI (JP)
Application Number:
PCT/JP2020/006361
Publication Date:
August 27, 2020
Filing Date:
February 18, 2020
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
H01M4/36; H01M4/505; H01M4/525
Foreign References:
| JP2017084628A | 2017-05-18 | |||
| JP2016183090A | 2016-10-20 | |||
| JP2017117700A | 2017-06-29 | |||
| JP2017117766A | 2017-06-29 | |||
| JPH1116566A | 1999-01-22 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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