公开(公告)号：US11011776B2

公开(公告)日：2021-05-18

申请号：US15858362

申请日：2017-12-29

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Yuki Takeuchi ,  Hirofumi Ando ,  Daisuke Shishihara ,  Hidetoshi Mizutani

IPC: H01M10/0562 ,  C04B35/48 ,  C04B35/626 ,  C04B35/64 ,  H01M10/0525 ,  C04B35/486 ,  H01M4/62 ,  H01M10/052

Abstract: [OBJECTS]
An object of the present invention is to provide a lithium-ion-conductive ceramic material having a target ion conductivity, while suppressing production cost. Another object is to provide a high-performance lithium battery, while suppressing production cost, by virtue of having the lithium-ion-conductive ceramic material.
The lithium-ion-conductive ceramic material contains Li, La, and Zr, as well as at least one of Mg and A (wherein A represents at least one element selected from the group consisting of Ca, Sr, and Ba) and which has a garnet-type crystal structure, wherein the elements contained in the ceramic material satisfy the following mole ratio conditions (1) to (3): (1) 1.33≤Li/(La+A)≤3; (2) 0