LITHIUM ION-CONDUCTIVE CERAMIC MATERIAL, LITHIUM ION-CONDUCTIVE CERAMIC BODY, AND LITHIUM BATTERY

Title:

LITHIUM ION-CONDUCTIVE CERAMIC MATERIAL, LITHIUM ION-CONDUCTIVE CERAMIC BODY, AND LITHIUM BATTERY

Document Type and Number:

WIPO Patent Application WO/2018/199171

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide a lithium ion-conductive ceramic material having high ion conductivity, and to provide a lithium battery having high capacity and high output as a result of using such a lithium ion-conductive ceramic material. Provided is a lithium ion-conductive ceramic material having an Li-containing first crystal phase where the crystal structure is a garnet-type structure or similar to a garnet-type structure and a second crystal phase containing Li, Mg, Zr, and O. In a specific region of the cross section, the ratio (L2/L1), where L1 is the total length of the line segments alternately joining successive crests and troughs in the surface of the lithium ion-conductive ceramic material and L2 is the total length of the line segments joining successive troughs only, is at least 0.95 but smaller than 1. Also provided is a lithium battery including the lithium ion-conductive ceramic material as a solid electrolyte layer or protective layer.

Inventors:

TAKEUCHI YUKI (JP)
SHISHIHARA DAISUKE (JP)
HIKOSAKA HIDEAKI (JP)
MIZUTANI HIDETOSHI (JP)

Application Number:

PCT/JP2018/016826

Publication Date:

November 01, 2018

Filing Date:

April 25, 2018

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NGK SPARK PLUG CO (JP)

International Classes:

H01M10/0562; H01B1/06; H01B1/08; H01M4/13; H01M6/18; H01M10/052

Domestic Patent References:

WO2013128759A1	2013-09-06
WO2013128759A1	2013-09-06

Foreign References:

JP2016040767A	2016-03-24
JP2014220173A	2014-11-20
JP2016056054A	2016-04-21
JP2013256435A	2013-12-26
JP2017088420A	2017-05-25
JP5083336B2	2012-11-28

Other References: