US 12,244,006 B2
Electroactive materials for metal-ion batteries
Charles Mason, Abingdon (GB); Richard Taylor, Abingdon (GB); and Christopher Michael Friend, Abingdon (GB)
Assigned to Nexeon Limited, Abingdon (GB)
Filed by Nexeon Limited, Abingdon (GB)
Filed on Aug. 1, 2023, as Appl. No. 18/228,725.
Application 18/228,725 is a continuation of application No. 17/190,024, filed on Mar. 2, 2021, granted, now 11,715,824.
Application 17/190,024 is a continuation of application No. 16/867,354, filed on May 5, 2020, granted, now 10,938,027, issued on Mar. 2, 2021.
Application 16/867,354 is a continuation of application No. 16/540,755, filed on Aug. 14, 2019, granted, now 10,658,659, issued on May 19, 2020.
Application 16/540,755 is a continuation of application No. 16/274,187, filed on Feb. 12, 2019, granted, now 10,424,786, issued on Sep. 24, 2019.
Claims priority of application No. 1820695 (GB), filed on Dec. 19, 2018.
Prior Publication US 2024/0222603 A1, Jul. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/36 (2006.01); H01M 4/02 (2006.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 4/366 (2013.01) [H01M 4/386 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/025 (2013.01)] 16 Claims
 
1. A particulate material comprising a plurality of composite particles, wherein the composite particles comprise:
(a) a porous carbon framework comprising micropores and mesopores, wherein
(i) the micropores and mesopores have a total pore volume as measured by gas adsorption of P1 cm3/g, wherein P1 has a value of at least 0.65 and no more than 1.3;
(ii) the volume fraction of micropores (a) is in the range from 0.55 to 0.8, based on the total volume of micropores and mesopores;
(iii) the volume fraction of pores having a pore diameter no more than 5 nm (φ5) is at least 0.85, based on the total volume of micropores and mesopores; and
(iv) the porous carbon framework has a D90 particle size of less than 30 μm; and
(b) a plurality of nanoscale elemental silicon domains located within the micropores and/or mesopores of the porous carbon framework,
wherein the weight ratio of silicon to the porous carbon framework in the composite particles is in the range from [1.1×P1 to 1.9×P1]: 1.