Title:
METHOD FOR PRODUCING LITHIUM TITANIUM PHOSPHATE
Document Type and Number:
WIPO Patent Application WO/2020/158666
Kind Code:
A1
Abstract:
Provided is an industrially advantageous method by which it is possible to obtain a lithium titanium phosphate having a single phase in X-Ray diffraction measurements. This method for producing a lithium titanium phosphate having a NASICON structure represented by general formula (1), Li1+xMx(Ti1-yAy)2-x(PO4)3, is characterized by including: a first step for preparing a raw material mixture slurry (1) containing at least titanium dioxide, phosphoric acid, a surfactant and a solvent; a second step for heat treating the raw material mixture slurry (1) so as to obtain a heat treated raw material slurry (2); a third step for mixing a lithium source with the heat treated raw material slurry (2) so as to obtain a lithium-containing heat treated raw material slurry (3); a fourth step for spray drying the lithium-containing heat treated raw material slurry (3) so as to obtain a reaction precursor containing at least Ti, P and Li; and a fifth step for firing the reaction precursor.
Inventors:
FUKAZAWA JUNYA (JP)
HATA TORU (JP)
KATO TAKUMA (JP)
HATA TORU (JP)
KATO TAKUMA (JP)
Application Number:
PCT/JP2020/002782
Publication Date:
August 06, 2020
Filing Date:
January 27, 2020
Export Citation:
Assignee:
NIPPON CHEMICAL IND (JP)
International Classes:
C01B25/45; C04B35/447; H01B13/00; H01M4/58; H01M10/052; H01M10/0562
Foreign References:
| JP2013507317A | 2013-03-04 | |||
| US20140162136A1 | 2014-06-12 |
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