US 11,916,198 B2
Fast-charging lithium ion batteries with electrolytes that do not react on the anodes
Nir Pour, Herzeliya (IL); Dafna Meron, Herzeliya (IL); Daniel Hirshberg, Herzeliya (IL); Nir Kedem, Herzeliya (IL); and Evgenia Llel Kuks, Herzeliya (IL)
Assigned to STOREDOT LTD., Herzeliya (IL)
Filed by STOREDOT LTD., Herzeliya (IL)
Filed on Dec. 27, 2020, as Appl. No. 17/247,851.
Claims priority of provisional application 62/953,614, filed on Dec. 26, 2019.
Prior Publication US 2021/0203002 A1, Jul. 1, 2021
Int. Cl. H01M 10/0569 (2010.01); H01M 10/0567 (2010.01); H01M 10/0568 (2010.01); H01M 4/38 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 10/0569 (2013.01) [H01M 4/386 (2013.01); H01M 10/0525 (2013.01); H01M 10/0567 (2013.01); H01M 10/0568 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A lithium ion cell comprising:
a cover,
at least one separator,
at least one anode made of metalloid anode active material comprising at least one of Si, Ge and Sn,
at least one cathode,
a solid-electrolyte interphase (SEI) that is formed upon the at least one cathode, and
electrolyte comprising an electrolyte solution and at least one dissolved lithium salt; wherein the electrolyte solution comprises a redox couple, the redox couple comprises (i) a first redox pair between an anode of the least one anode and a separator of the at least one separator, and (ii) a second redox pair between a cathode of the at least one cathode and the separator;
wherein:
the at least one anode and the at least one cathode are enclosed with the electrolyte and the at least one separator within the cover, and
the electrolyte solution is selected to create, at least during a formation stage of the lithium ion cell, the SEI upon the at least one cathode and to prevent a creation of the SEI on the at least one anode.