US 12,438,147 B2
Lithium-containing particle coatings for positive electroactive materials
Gongshin Qi, Troy, MI (US); and Wei Li, Troy, MI (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on May 11, 2022, as Appl. No. 17/742,037.
Prior Publication US 2023/0369568 A1, Nov. 16, 2023
Int. Cl. H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/366 (2013.01) [H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A positive electrode material comprising:
an electroactive material core comprising Li1+xM1−xO2, where 0≤x≤0.5 and M is selected from the group consisting of: iron (Fe), tungsten (W), molybdenum (Mo), vanadium (V), zirconium (Zr), niobium (Nb), aluminum (Al), magnesium (Mg), and combinations thereof; and
an electrochemically active coating surrounding the electroactive material core, the electrochemically active coating comprising Li1+xM′1−xO2, where 0≤x≤0.2 and M′ is selected from the group consisting of: iron (Fe), tungsten (W), molybdenum (Mo), vanadium (V), zirconium (Zr), niobium (Nb), aluminum (Al), magnesium (Mg), and combinations thereof, the electrochemically active coating being a distinct composition from the electroactive material core.