Silicon-based active materials for lithium ion batteries and synthesis with solution processing

US10020491B2 · kind B2 · utility

Assignee

• Zenlabs Energy, Inc. · US

Inventors

• Yongbong Han · San Francisco, US
• Charan Masarapu · Fremont, US
• Haixia Deng · Woodridge, US
• Yogesh Kumar Anguchamy · Newark, US
• Subramanian Venkatachalam · Pleasanton, US
• Herman A. Lopez · San Jose, US

Key dates

• Filing date: Apr 16, 2013
• Grant date: Jul 10, 2018
• Expiry date: Dec 27, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Silicon based anode active materials are described for use in lithium ion batteries. The silicon based materials are generally composites of nanoscale elemental silicon with stabilizing components that can comprise, for example, silicon oxide-carbon matrix material, inert metal coatings or combinations thereof. High surface area morphology can further contribute to the material stability when cycled in a lithium based battery. In general, the material synthesis involves a significant solution based processing step that can be designed to yield desired material properties as well as providing convenient and scalable processing.