Title:
LITHIUM-ION-CONDUCTIVE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/209464
Kind Code:
A1
Abstract:
Provided is a lithium-ion-conductive material whereby it is possible to form a solid electrolyte provided with high lithium ion conductivity by a sintering temperature of 800°C or lower. The problem addressed by the present invention is solved by a lithium-ion-conductive material containing, in terms of mol% on an oxide basis, 36.6-37.3% of a P2O5 component, 43.0-48.1% of a TiO2 component, 0.6-3.2% of an Al2O3 component, and 13.9-17.5% of a Li2O component, the mol% of the Al2O3 component being 0.3-3.0 mol% less than the mol% of the Al2O3 component calculated from the compositional formula Li1+xAlxTi2-xP3O12 (x = 0.05 to 0.4) derived from the composition of Ti and Li, the mol% of the P2O5 component being 0.2-2.0 mol% less than the mol% of the P2O5 component calculated from the compositional formula above, and the lithium-ion-conductive material including a crystal phase having a NASICON structure in a rhombohedral crystal system or a Li1+xAlxTi2-xP3O12 (x ≥ 0) crystal phase.
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Inventors:
OGASA KAZUHITO (JP)
Application Number:
PCT/JP2022/007596
Publication Date:
October 06, 2022
Filing Date:
February 24, 2022
Export Citation:
Assignee:
OHARA KK (JP)
International Classes:
C04B35/447; C03C10/02; C04B35/117; H01B1/06; H01B1/08; H01M10/052; H01M10/0562
Domestic Patent References:
| WO2019239890A1 | 2019-12-19 |
Foreign References:
| JP2010006681A | 2010-01-14 | |||
| JP2010108881A | 2010-05-13 | |||
| JPH09142874A | 1997-06-03 | |||
| JP2014017137A | 2014-01-30 |
Attorney, Agent or Firm:
MIGITA, Shunsuke et al. (JP)
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