US 11,817,570 B2
Method of manufacturing a solid-state lithium battery and a battery manufactured by the method
Ali Sadeghi, Atherton, CA (US); Yuri Vorobyev, San Carlos, CA (US); Gene Kristul, San Francisco, CA (US); and Leonid Velikov, San Carlos, CA (US)
Filed by Ali Sadeghi, Atherton, CA (US); Yuri Vorobyev, San Carlos, CA (US); Gene Kristul, San Francisco, CA (US); and Leonid Velikov, San Carlos, CA (US)
Filed on Aug. 5, 2021, as Appl. No. 17/395,434.
Prior Publication US 2023/0044416 A1, Feb. 9, 2023
Int. Cl. H01M 10/058 (2010.01); H01M 10/0525 (2010.01); H01M 4/04 (2006.01); H01M 4/62 (2006.01); H01M 4/50 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/485 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/043 (2013.01) [H01M 4/0471 (2013.01); H01M 10/058 (2013.01); H01M 10/0525 (2013.01); H01M 4/485 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/623 (2013.01); H01M 4/625 (2013.01); H01M 2004/028 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of manufacturing a solid-state lithium battery comprising steps of:
(a) providing a lithium-anode unit comprising on one side a first solid-state electrolyte precursor having a surface and a first metal current collector on a side opposite to said one side, the first solid-state electrolyte precursor containing redundant water;
(b) providing a cathode unit, which has on one side a cathode plate comprising a compressed mixture of cathode-material powder and on a side, which is opposite to said one side of the cathode unit, a second metal current collector;
(c) placing the lithium-anode unit onto the cathode unit by contacting the first solid-state electrolyte precursor with the cathode plate;
(d) pressing the anode unit to the cathode unit under a pressure in a range of 400 kg/cm2 to 1000 kg/cm2 with heating at a temperature in a range of 90° C. to 130° C. to remove the redundant water and form a pre-final solid-state battery unit comprising an anode unit, a cathode unit, and a solid-state electrolyte formed between them at least from the first solid-state electrolyte precursor; and
(e) forming the solid-state lithium battery by inserting the pre-final solid-state battery unit into a battery casing, wherein the lithium-anode unit and the cathode unit are interconnected through the solid-state electrolyte unit and wherein the first metal current collector and the second metal current collector are at least partially exposed from the battery casing for use as a battery anode and a battery cathode, respectively.