US 12,469,886 B2
Lithium secondary battery
Mikako Iwahana, Nagoya (JP); Masanori Tajima, Nagoya (JP); and Yukinobu Yura, Nagoya (JP)
Assigned to NGK INSULATORS, LTD., Nagoya (JP)
Filed by NGK INSULATORS, LTD., Nagoya (JP)
Filed on Aug. 27, 2021, as Appl. No. 17/446,190.
Application 17/446,190 is a continuation of application No. PCT/JP2019/048320, filed on Dec. 10, 2019.
Claims priority of application No. 2019-086824 (JP), filed on Apr. 26, 2019.
Prior Publication US 2021/0391598 A1, Dec. 16, 2021
Int. Cl. H01M 10/0585 (2010.01); H01M 4/02 (2006.01); H01M 4/131 (2010.01); H01M 4/485 (2010.01); H01M 4/525 (2010.01); H01M 4/58 (2010.01); H01M 10/0525 (2010.01); H01M 50/409 (2021.01); H01M 50/434 (2021.01); H01M 50/491 (2021.01)
CPC H01M 10/0585 (2013.01) [H01M 4/131 (2013.01); H01M 4/485 (2013.01); H01M 4/525 (2013.01); H01M 4/58 (2013.01); H01M 10/0525 (2013.01); H01M 50/409 (2021.01); H01M 50/434 (2021.01); H01M 50/491 (2021.01); H01M 2004/021 (2013.01); H01M 2004/029 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A lithium secondary battery comprising:
a positive electrode layer composed of a lithium complex oxide sintered body;
a negative electrode layer composed of a titanium-containing sintered body;
a ceramic separator interposed between the positive electrode layer and the negative electrode layer;
an electrolytic solution with which at least the ceramic separator is impregnated; and
an exterior body comprising a closed space, the closed space accommodating the positive electrode layer, the negative electrode layer, the ceramic separator, and the electrolytic solution,
wherein the positive electrode layer, the ceramic separator, and the negative electrode layer form one integrated sintered plate as a whole, whereby the positive electrode layer, the ceramic separator, and the negative electrode layer are bonded together, and
wherein the entirety of the integrated sintered plate is coated with a metal oxide layer.