US 12,080,883 B2
Ion permeable composite current collectors for metal-ion batteries and cell design using the same
Gleb Yushin, Atlanta, GA (US); Eugene Michael Berdichevsky, Oakland, CA (US); Bogdan Zdyrko, Clemson, SC (US); and Alexander Thomas Jacobs, Oakland, CA (US)
Assigned to SILA NANOTECHNOLOGIES, INC., Alameda, CA (US)
Filed by Sila Nanotechnologies Inc., Alameda, CA (US)
Filed on May 27, 2021, as Appl. No. 17/332,732.
Application 17/332,732 is a continuation of application No. 14/725,784, filed on May 29, 2015, granted, now 11,038,165.
Claims priority of provisional application 62/004,329, filed on May 29, 2014.
Prior Publication US 2021/0288318 A1, Sep. 16, 2021
Int. Cl. H01M 4/38 (2006.01); H01M 4/134 (2010.01); H01M 4/136 (2010.01); H01M 4/36 (2006.01); H01M 4/58 (2010.01); H01M 4/62 (2006.01); H01M 4/66 (2006.01); H01M 4/72 (2006.01); H01M 10/04 (2006.01); H01M 10/0525 (2010.01); H01M 10/0587 (2010.01)
CPC H01M 4/386 (2013.01) [H01M 4/134 (2013.01); H01M 4/136 (2013.01); H01M 4/364 (2013.01); H01M 4/366 (2013.01); H01M 4/58 (2013.01); H01M 4/62 (2013.01); H01M 4/66 (2013.01); H01M 4/661 (2013.01); H01M 4/668 (2013.01); H01M 4/72 (2013.01); H01M 10/0445 (2013.01); H01M 10/0525 (2013.01); H01M 10/0587 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A Li-ion battery cell, comprising:
a composite current collector comprising pores;
a second current collector;
a Li-ion permeable anode on the composite current collector;
a Li-ion permeable cathode on the second current collector;
an electrolyte comprising an organic solvent ionically coupling the anode and the cathode; and
a separator electrically separating the anode and the cathode;
wherein the anode comprises a composite active material composition, the composite active material composition comprising first active material particles that exhibit specific capacity of at least 400 mAh/g and second active material particles comprising graphite that exhibit specific capacity that is less than or equal to 372 mAh/g; and
wherein at least some of the second active material particles are in the pores of the composite current collector as part of a filler material;
wherein at least some of the first active material particles are electrically connected to the composite current collector and are outside of the pores of the composite current collector; and
wherein the pores are smaller than the first active material particles.