US 12,424,616 B2
Electroactive materials for metal-ion batteries
Timothy Bogart, Oxfordshire (GB); Simon Foxon, Oxfordshire (GB); James Farrell, Oxfordshire (GB); David Bent, Oxfordshire (GB); and Daniel Scarlett, Oxfordshire (GB)
Assigned to Nexeon Limited, Oxfordshire (GB)
Filed by Nexeon Limited, Oxfordshire (GB)
Filed on Jun. 28, 2024, as Appl. No. 18/759,452.
Application 18/759,452 is a continuation of application No. 18/205,033, filed on Jun. 2, 2023, granted, now 12,062,776.
Application 18/205,033 is a continuation of application No. 16/619,064, granted, now 11,710,819, issued on Jul. 25, 2023, previously published as PCT/GB2018/051689, filed on Jun. 18, 2018.
Claims priority of application No. 1709685 (GB), filed on Jun. 16, 2017.
Prior Publication US 2024/0372071 A1, Nov. 7, 2024
Int. Cl. H01M 4/36 (2006.01); C01B 33/02 (2006.01); C04B 35/532 (2006.01); C04B 35/626 (2006.01); C04B 35/628 (2006.01); C04B 35/64 (2006.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/362 (2013.01) [C01B 33/02 (2013.01); C04B 35/532 (2013.01); C04B 35/6261 (2013.01); C04B 35/6264 (2013.01); C04B 35/62839 (2013.01); C04B 35/64 (2013.01); H01M 4/386 (2013.01); H01M 4/625 (2013.01); C01P 2004/51 (2013.01); C01P 2004/62 (2013.01); C01P 2004/64 (2013.01); C01P 2006/12 (2013.01); C01P 2006/40 (2013.01); C04B 2235/422 (2013.01); C04B 2235/428 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/5454 (2013.01); H01M 2004/027 (2013.01)] 25 Claims
 
1. Composite particles comprising silicon nanoparticles dispersed within a conductive carbon matrix, wherein the composite particles:
(i) have a D50 particle diameter of no more than 25 μm,
(ii) have a particle size distribution span ((D90-D10)/D50) of 5 or less,
(iii) have a weight ratio of a total amount of oxygen and nitrogen to silicon of no more than 0.42,
(iv) have a weight ratio of carbon to silicon of at least 0.2,
(v) comprise less than 18 wt % oxygen, and
(vi) comprise pores having a diameter of less than 2 nm distributed throughout their volume.