US 12,148,914 B2
Electrochemically active dispersions and composites for rechargeable battery anodes
Mark Obrovac, Halifax (CA); Yidan Cao, Halifax (CA); and Jun Wang, Halifax (CA)
Assigned to Novonix Battery Technology Solutions Inc., Dartmouth (CA)
Appl. No. 17/415,331
Filed by Novonix Battery Technology Solutions Inc., Bedford (CA)
PCT Filed Dec. 6, 2019, PCT No. PCT/US2019/064956
§ 371(c)(1), (2) Date Jun. 17, 2021,
PCT Pub. No. WO2020/131429, PCT Pub. Date Jun. 25, 2020.
Claims priority of provisional application 62/782,008, filed on Dec. 19, 2018.
Prior Publication US 2022/0059812 A1, Feb. 24, 2022
Int. Cl. H01M 4/133 (2010.01); H01M 4/04 (2006.01); H01M 4/134 (2010.01); H01M 4/1393 (2010.01); H01M 4/1395 (2010.01); H01M 10/0525 (2010.01)
CPC H01M 4/133 (2013.01) [H01M 4/0416 (2013.01); H01M 4/134 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 10/0525 (2013.01)] 33 Claims
OG exemplary drawing
 
1. A particulate composite comprising:
a graphite matrix; and
alloy particles within the graphite matrix wherein the alloy particles comprise an electrochemically active phase and an electrochemically inactive phase;
wherein:
the graphite matrix has a graphitic crystalline structure characterized by a d002 spacing of less than 3.4 Å and a {002} x-ray diffraction peak with a FWHM of less than 0.4° as measured using CuKα radiation;
the active phase is amorphous or has an average grain size less than 50 nm; and
the alloy particles are essentially embedded between layers in the graphite matrix.