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:
Dec. 24, 2024
Filed:
Feb. 21, 2020
Amprius Technologies, Inc., Fremont, CA (US);
Chentao Yu, Fremont, CA (US);
Weijie Wang, Sunnyvale, CA (US);
Constantin Ionel Stefan, San Jose, CA (US);
Jonathan Bornstein, Cupertino, CA (US);
Daniel Seo, Sunnyvale, CA (US);
AMPRIUS TECHNOLOGIES, INC., Fremont, CA (US);
Abstract
Provided herein are nanostructures for lithium ion battery electrodes and methods of fabrication. In some embodiments, a nanostructure template coated with a silicon-based coating is provided. The silicon coating may include a non-conformal, more porous silicon-rich SiElayer and a conformal, denser SiElayer on the non-conformal, more porous layer. In some embodiments, two different deposition processes are used: a PECVD layer to deposit the non-conformal, silicon-rich SiElayer and a thermal CVD process to deposit the conformal layer. The silicon-rich SiEmaterial prevents silicon crystalline domain growth, limits macroscopic swelling, increases lithium diffusion rate and enhances significantly battery life during lithium ion battery cycle of charge and discharge.