Electrode assembly, secondary battery, and method of manufacture

US12255353B2 · kind B2 · utility

Assignee

• Enovix Corporation · US

Inventors

• Jeremie J. Dalton · San Jose, US
• Robert S. Busacca · San Francisco, US
• Ashok Lahiri · Mainz, DE
• Murali Ramasubramanian · Fremont, US
• Bruno A. Valdes · Sunnyvale, US
• Kim Han Lee · Pleasanton, US
• Anthony Calcaterra · Milpitas, US
• Benjamin L. Cardozo · Palo Alto, US

Key dates

• Filing date: Nov 12, 2021
• Grant date: Mar 18, 2025
• Expiry date: Feb 25, 2043

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

Secondary batteries and methods of manufacture thereof are provided. A secondary battery can comprise an electrode layer comprising a population of spacer structures comprising a material other than the electrode active material, wherein (a) the spacer population occupies a total volume within the electrode layer within the range of about 0.1% to about 35% of the volume, VE, of the electrode layer, and (b) a member of the spacer population is located within each subvolume of the electrode layer comprising (i) at least 25% of the volume, VE, of the electrode layer, and (ii) bounded on all sides by (aa) the unit cell portion of the electrode current collector, (bb) the separator layer, (cc) the top surface of the electrode layer, (dd) the bottom surface of the electrode layer, (ee) the first end surface of the electrode layer, and (ff) the second end surface of the electrode layer.