US 12,266,786 B2
Negative electrode, and electrochemical apparatus and electronic apparatus including same
Qunchao Liao, Ningde (CN); Hang Cui, Ningde (CN); and Yuansen Xie, Ningde (CN)
Assigned to Ningde Amperex Technology Limited, Ningde (CN)
Filed by Ningde Amperex Technology Limited, Fujian (CN)
Filed on Aug. 30, 2021, as Appl. No. 17/460,736.
Application 17/460,736 is a continuation of application No. PCT/CN2019/121735, filed on Nov. 28, 2019.
Prior Publication US 2021/0391567 A1, Dec. 16, 2021
Int. Cl. H01M 4/36 (2006.01); H01M 4/02 (2006.01); H01M 4/38 (2006.01); H01M 4/48 (2010.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01)
CPC H01M 4/364 (2013.01) [H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/483 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] 30 Claims
 
1. A negative electrode, comprising: silicon-based particles and graphite particles, wherein each silicon-based particle is surrounded by N graphite particles within a vertical distance of 0 to 6 μm from respective edges of each silicon-based particle; and wherein, based on a total quantity of the silicon-based particles, 6≤N≤17 for more than 50% of the silicon-based particles;
wherein a particle size distribution of the silicon-based particles satisfies: 0.3≤Dn10/Dv50≤0.6.