US 12,456,750 B2
Lithium secondary battery and method of manufacture
Akihiro Kushima, Orlando, FL (US); Supriya Koul, Orlando, FL (US); Yoshiya Fujiwara, Wako (JP); Yoshiyuki Morita, Wako (JP); Fumika Fujisaki, Wako (JP); and Hiroshi Ogasa, Wako (JP)
Assigned to University of Central Florida Research Foundation, Inc., Orlando, FL (US); and Honda Motor Co., Ltd., Tokyo (JP)
Filed by University of Central Florida Research Foundation, Inc., Orlando, FL (US); and Honda Motor Co., Ltd., Tokyo (JP)
Filed on Mar. 1, 2022, as Appl. No. 17/683,651.
Claims priority of provisional application 63/156,069, filed on Mar. 3, 2021.
Prior Publication US 2022/0393228 A1, Dec. 8, 2022
Int. Cl. H01M 10/0525 (2010.01); H01M 4/02 (2006.01); H01M 4/131 (2010.01); H01M 10/04 (2006.01); H01M 10/0562 (2010.01)
CPC H01M 10/0525 (2013.01) [H01M 4/02 (2013.01); H01M 4/131 (2013.01); H01M 10/0481 (2013.01); H01M 10/0562 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A lithium secondary battery comprising:
a lithium (Li) metal anode layer;
a cathode layer;
an electrolyte layer positioned between the Li metal anode layer and the cathode layer;
a Li buffer layer compressed between the Li metal anode layer and the electrolyte layer;
an anode current collector; and
a porous layer positioned between the Li metal anode layer and the anode current collector, wherein the porous layer guides lithium deposition from the Li metal anode layer between the Li buffer layer and the anode current collector, during charge and discharge cycles of the lithium secondary battery, wherein the Li buffer layer comprises lithium, a solid electrolyte, and lithium fluoride (LiF), the lithium fluoride (LiF) in the Li buffer layer having a number of mols between 10% and 70% of a total of a number of mols of the lithium and a number of mols of the solid electrolyte, the Li buffer layer being compressed between the Li metal anode layer and the electrolyte layer at a pressure of at least 0.1 MPa (megapascal), and
wherein the porous layer comprises Li6.4Ga0.2La3Zr2O12 (Ga-LLZO) and carbon fiber.