	US 12,224,432 B2
	Electroactive materials for metal-ion batteries
Charles Mason, Abingdon (GB); Richard Taylor, Abingdon (GB); James Farrell, Abingdon (GB); and William Macklin, Abingdon (GB)
Assigned to Nexeon Limited, Abingdon (GB)
Filed by Nexeon Limited, Abingdon (GB)
Filed on Jun. 26, 2023, as Appl. No. 18/214,304.
Application 18/214,304 is a continuation of application No. 17/316,908, filed on May 11, 2021, granted, now 11,695,110.
Application 17/316,908 is a continuation of application No. 16/274,182, filed on Feb. 12, 2019, granted, now 11,011,748, issued on May 18, 2021.
Claims priority of application No. 1818232 (GB), filed on Nov. 8, 2018; and application No. 1820736 (GB), filed on Dec. 19, 2018.
Prior Publication US 2024/0154098 A1, May 9, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/36 (2006.01); H01B 1/18 (2006.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)

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)]

27 Claims

1. A particulate material comprising a plurality of composite particles, wherein the composite particles comprise:

(a) a porous carbon framework comprising micropores and optional mesopores,

wherein the micropores and optional mesopores have a total pore volume as measured by gas adsorption of P₁cm³/g, wherein P₁has a value of at least 0.7 and up to 1.3,

wherein the PD₅₀pore diameter as measured by gas adsorption is no more than 1.5 nm, and

wherein the PD₉₀pore diameter of the porous carbon framework is no more than 10 nm; and

(b) a plurality of elemental nanoscale silicon domains located at least within the micropores 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 [0.7×P₁to 1.3×P₁]:1, and

wherein at least 90 wt % of the silicon mass in the composite particles is located within the internal pore volume of the porous carbon framework.