US 11,735,720 B2
Method of making hard-carbon composite material
Shantanu Mitra, Hillsborough, CA (US); and Vinod Nair, Coraopolis, PA (US)
Assigned to Farad Power, Inc, Sunnyvale, CA (US)
Filed by Farad Power, Inc., Sunnyvale, CA (US)
Filed on Dec. 2, 2020, as Appl. No. 17/109,394.
Application 17/109,394 is a division of application No. 16/120,046, filed on Aug. 31, 2018, granted, now 10,910,638.
Prior Publication US 2021/0091377 A1, Mar. 25, 2021
Int. Cl. H01M 4/36 (2006.01); C01B 32/05 (2017.01); C04B 35/52 (2006.01); C04B 35/524 (2006.01); C04B 35/64 (2006.01); H01G 11/32 (2013.01); H01G 11/50 (2013.01); H01G 11/86 (2013.01); H01M 4/133 (2010.01); H01M 4/1393 (2010.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 4/131 (2010.01); H01M 4/134 (2010.01); H01M 4/38 (2006.01); H01M 4/485 (2010.01); H01M 10/054 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/364 (2013.01) [C01B 32/05 (2017.08); C04B 35/52 (2013.01); C04B 35/524 (2013.01); C04B 35/64 (2013.01); H01G 11/32 (2013.01); H01G 11/50 (2013.01); H01G 11/86 (2013.01); H01M 4/133 (2013.01); H01M 4/1393 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); C01P 2002/02 (2013.01); C01P 2006/12 (2013.01); C01P 2006/40 (2013.01); C04B 2235/3203 (2013.01); C04B 2235/3234 (2013.01); C04B 2235/349 (2013.01); C04B 2235/422 (2013.01); C04B 2235/428 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/6562 (2013.01); C04B 2235/6567 (2013.01); C04B 2235/761 (2013.01); C04B 2235/77 (2013.01); C04B 2235/80 (2013.01); C04B 2235/96 (2013.01); H01M 4/131 (2013.01); H01M 4/134 (2013.01); H01M 4/386 (2013.01); H01M 4/485 (2013.01); H01M 10/054 (2013.01); H01M 2004/021 (2013.01)] 6 Claims
 
1. A method of producing a lithium-containing non-amorphous hard-carbon composite from a furan-ring containing compound, comprising:
a. mixing an insoluble lithium compound and an acidic catalyst with a furan-ring containing compound to form a mixture, wherein the furan-ring compound is a 5 membered ring with 4 carbon atoms and 1 oxygen atom;
b. soaking the mixture at room temperature and further heating the mixture between 25° C. and 200° C. to form a solid-polymer/lithium-containing composite; and
c. heating the solid-polymer/lithium-containing composite between 200° C. to 1100° C. under an inert atmosphere, to carbonize the solid-polymer/lithium-containing composite and make the lithium-containing non-amorphous hard carbon.