Title:
METHOD FOR PRODUCING LAYERED COMPOSITE METAL OXIDE CRYSTAL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/196762
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a method whereby it is possible to produce a layered composite metal oxide crystal material, which is a material capable of being used as a positive electrode material for a lithium ion secondary battery and the like, under milder conditions; and a method for producing a positive electrode and a method for producing a lithium ion secondary battery, in each of which the aforementioned method is employed. The method for producing a layered composite metal oxide crystal material according to the present invention is characterized in that the layered composite metal oxide crystal material comprises a composite metal oxide represented by the formula: LixMOy [wherein M represents one or more transition metals, in which one or some of M's may be substituted by Al and/or Mg; and x represents a numerical number of 1 to 2 inclusive, and y represents a numerical number of 2 to 3 inclusive, in which the value of x+n (wherein n represents an average number of valency of the transition metals M's) is 2×y], and is also characterized by comprising a step for burning a mixture comprising a monovalent anionic salt of lithium, a monovalent anionic salt of sodium and/or potassium and a monovalent anionic salt of a transition metal at 150°C to 400°C inclusive in the presence of a water molecule and oxygen.
Inventors:
MATSUI MASAKI (JP)
MAEDA RANNOSUKE (JP)
MAEDA RANNOSUKE (JP)
Application Number:
PCT/JP2022/012276
Publication Date:
September 22, 2022
Filing Date:
March 17, 2022
Export Citation:
Assignee:
UNIV HOKKAIDO NAT UNIV CORP (JP)
International Classes:
C01G51/00; C01G53/00; H01M4/1391; H01M4/505; H01M4/525; H01M10/052; H01M10/0566; H01M10/0587
Domestic Patent References:
| WO2019176389A1 | 2019-09-19 |
Foreign References:
| JPH11510467A | 1999-09-14 | |||
| JP2007257985A | 2007-10-04 |
Attorney, Agent or Firm:
USFI PATENT ATTORNEYS INTERNATIONAL OFFICE (JP)
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