Artificial solid electrolyte interface (A-SEI) cap layer including graphene layers with flexible wrinkle areas

US11539074B2 · kind B2 · utility

Assignee

• LYTEN, INC. · US

Inventors

• Elena Rogojina · San Jose, US
• Qianwen Huang · Walsenburg, US
• Jerzy Gazda · Austin, US
• Jeffrey Bell · Santa Clara, US
• Bruce Lanning · Littleton, US
• Michael W. Stowell · Sunnyvale, US
• Prashanth Jampani Hanumantha · Pittsburgh, US
• James McKinney · Redwood City, US
• George Clayton Gibbs · Santa Clara, US

Key dates

• Filing date: Sep 9, 2020
• Grant date: Dec 27, 2022
• Expiry date: Jul 9, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/70
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

This disclosure provides a battery comprising a cathode and an anode positioned opposite the cathode. A hybrid artificial solid-electrolyte interphase (A-SEI) layer is deposited on the anode and includes a plurality of active components. A blended material is interwoven throughout the plurality of active components and configured to inhibit growth of Lithium (Li) dendritic structures from the anode to the cathode. The blended material includes a combination of crystalline sp2-bound carbon domains of graphene sheets and a plurality of flexible wrinkle areas positioned at joinder points of two of more of the crystalline sp2-bound carbon domains of graphene sheets and a polymeric matrix configured to bind the plurality of active components and the blended material together. An electrolyte is in contact with the hybrid A-SEI and the cathode and a separator is positioned between the anode and the cathode. The blended material includes curable carboxylate salts of metals.