	US 12,230,789 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. 18/214,315.
Application 18/214,315 is a continuation of application No. 17/517,013, filed on Nov. 2, 2021, granted, now 11,688,849.
Application 17/517,013 is a continuation of application No. 16/274,185, filed on Feb. 12, 2019, granted, now 11,165,054, issued on Nov. 2, 2021.
Claims priority of application No. 1818235 (GB), filed on Nov. 8, 2018; and application No. 1820742 (GB), filed on Dec. 19, 2018.
Prior Publication US 2024/0154099 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)]

24 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 P₁cm^3/g, wherein P₁has a value of at least 0.7 and up to 2,

wherein the PD₅₀pore diameter as measured by gas adsorption is no more than 2 nm; and

(b) silicon located within at least the micropores of the porous carbon framework, with at least 90 wt % of the silicon mass in the composite particles being located within the internal volume of the porous carbon framework;

wherein the composite particles have a D₁₀particle diameter of at least 1.5 μm, a D₉₉particle diameter of no more than 18 μm, and a BET surface area of no more than 40 m^2/g.