	US 11,936,038 B2
	Silicon particles having a specific chlorine content, as active anode material for lithium ion batteries
Jürgen Pfeiffer, Mehring (DE); Eckhard Hanelt, Geltendorf (DE); Harald Hertlein, Burghausen (DE); Karl Hesse, Burghausen (DE); and Robert Maurer, Munich (DE)
Assigned to Wacker Chemie AG, Munich (DE)
Appl. No. 17/281,969
Filed by Wacker Chemie AG, Munich (DE)
PCT Filed Oct. 2, 2018, PCT No. PCT/EP2018/076809 § 371(c)(1), (2) Date Mar. 31, 2021, PCT Pub. No. WO2020/069728, PCT Pub. Date Apr. 9, 2020.
Prior Publication US 2021/0376315 A1, Dec. 2, 2021
Int. Cl. H01M 4/38 (2006.01); B01J 8/24 (2006.01); C01B 33/03 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)

CPC H01M 4/386 (2013.01) [B01J 8/24 (2013.01); C01B 33/03 (2013.01); H01M 10/0525 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2004/64 (2013.01); C01P 2006/12 (2013.01); C01P 2006/80 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)]

14 Claims

1. An anode active material for lithium ion batteries, comprising one or more unaggregated silicon particles having a mass-based chlorine content of from 5 to 200 ppm and a volume-weighted particle size distribution having diameter percentiles d₅₀of from 0.5 μm to 10.0 μm.