The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2022
Filed:
Nov. 18, 2019
Apple Inc., Cupertino, CA (US);
Zuqin Liu, Sunnyvale, CA (US);
Richard M. Mank, Cupertino, CA (US);
Hyea Kim, Campbell, CA (US);
Hongli Dai, Los Altos, CA (US);
Sunho Kang, San Jose, CA (US);
Ji-Guang Zhang, Richland, WA (US);
Ran Yi, Richland, WA (US);
Qiuyan Li, Richland, WA (US);
Xiaolin Li, Richland, WA (US);
Wu Xu, Richland, WA (US);
Rajankumar L. Patel, Richland, WA (US);
Hyung-Seok Lim, Richland, WA (US);
Chongmin Wang, Richland, WA (US);
Langli Luo, Richland, WA (US);
Yang He, Richland, WA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An anode active material comprises a silicon-carbon secondary particle comprising a composite having an exterior conformal carbon coating and formed of type I primary particles. Each type I primary particle comprises a core particle of interconnected silicon, the interconnected silicon formed of nano-sized silicon particles each connected to at least one other particle, inner pores internal to the core particle and defined by the interconnected silicon, an internal carbon coating on internal wall surfaces of the inner pores and a conformal carbon coating on the core particle.