US 12,009,510 B1
Fast-charge lithium metal phosphate materials
Soo Kim, Fremont, CA (US); Sun Ung Kim, Pleasanton, CA (US); Rubayyat Mahbub, Fremont, CA (US); and Woochul Shin, Newark, CA (US)
Assigned to Rivian IP Holdings, LLC, Irvine, CA (US)
Filed by Rivian IP Holdings, LLC, Irvine, CA (US)
Filed on Jun. 30, 2023, as Appl. No. 18/346,112.
Int. Cl. H01M 4/36 (2006.01); H01M 4/136 (2010.01); H01M 4/58 (2010.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/366 (2013.01) [H01M 4/136 (2013.01); H01M 4/5825 (2013.01); H01M 4/625 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A cathode active material, comprising:
particles having a lithium metal phosphate (LMP) core material; a layer of an ionic conducting material on at least a portion of the LMP core material and a conductive carbon material between the LMP core material and the layer of the ionic conducting material;
wherein the ionic conducting material has a higher ionic conductivity of lithium ions than the LMP core material.