	US 12,327,863 B2
	Electroactive materials for metal-ion batteries
Charles Mason, Abingdon (GB); Chris Friend, Long Wittenham (GB); and William Macklin, Abingdon (GB)
Assigned to Nexeon Limited, Abingdon (GB)
Appl. No. 17/612,751
Filed by Nexeon Limited, Abingdon (GB)
PCT Filed May 20, 2020, PCT No. PCT/GB2020/051227 § 371(c)(1), (2) Date Nov. 19, 2021, PCT Pub. No. WO2020/234586, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 1907117 (GB), filed on May 20, 2019.
Prior Publication US 2022/0246910 A1, Aug. 4, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/36 (2006.01); H01M 4/02 (2006.01); H01M 4/134 (2010.01); H01M 4/38 (2006.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01)

CPC H01M 4/362 (2013.01) [H01M 4/134 (2013.01); H01M 4/364 (2013.01); H01M 4/386 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)]

17 Claims

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

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

wherein the micropores and mesopores have a total pore volume of P¹cm³/g, wherein P¹represents a dimensionless number having a value of from 0.4 to 0.75, as measured by nitrogen gas adsorption at 77 K using quenched solid density functional theory (QSDFT) in accordance with ISO 15901-2 and ISO 15901-3, and

wherein the micropore volume fraction is in the range of 0.5 to 0.85, based on the total volume of micropores and mesopores; and

(b) a plurality of nanoscale elemental silicon domains located within the pores of the porous carbon framework;

wherein the weight ratio of silicon to the porous carbon framework in the composite particles is in the range of from [0.9×P¹to 1.9×P¹]:1.