US 11,916,235 B2
Fluoride ion secondary battery
Katsutoshi Sakurai, Saitama (JP); and Yoshiyuki Morita, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD, Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Jan. 25, 2022, as Appl. No. 17/583,232.
Claims priority of application No. 2021-010584 (JP), filed on Jan. 26, 2021.
Prior Publication US 2022/0238876 A1, Jul. 28, 2022
Int. Cl. H01M 4/00 (2006.01); H01M 4/04 (2006.01); H01M 4/38 (2006.01); H01M 4/58 (2010.01); H01M 4/66 (2006.01); H01M 10/0562 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/582 (2013.01) [H01M 4/0404 (2013.01); H01M 4/38 (2013.01); H01M 4/661 (2013.01); H01M 10/0562 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2300/008 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A fluoride ion secondary battery comprising:
a positive electrode material layer comprising Ag;
a negative electrode material layer comprising at least one of CeF3 and PbF2; and
a solid electrolyte layer comprising an LaF3 substrate and disposed between the positive electrode material layer and the negative electrode material layer,
wherein the positive electrode material layer has a thickness of 10 nm or more and less than 120 nm,
the negative electrode material layer has a thickness of 10 nm or more and less than 200 nm,
the LaF3 substrate has a thickness of 0.1 mm to 0.5 mm, and
the positive electrode material layer has a theoretical capacity that is lower than a theoretical capacity of the negative electrode material layer.