Artificial solid electrolyte interface cap layer for an anode in a Li S battery system

US11631893B2 · 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: Apr 18, 2023
• Expiry date: Jun 22, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

This disclosure provides a battery including a cathode an anode positioned opposite the cathode. The anode includes a hybrid artificial solid-electrolyte interphase (A-SEI) layer encapsulating the anode. The hybrid A-SEI layer includes a first active component, a second active component disposed on the first active component, and a plurality of carbon-containing aggregates interwoven throughout the first and second active components and configured to inhibit growth of Li dendritic structures from the anode towards the cathode. A separator is positioned between the anode and the cathode. The cathode includes a porous carbon-based structure configured to expand in a presence of polysulfide (PS) shuttle within one or more portions of the battery. An electrolyte is dispersed between the anode and the cathode and in contact with both the anode and the cathode. The plurality of carbon-containing aggregates can include a polymer, which includes a cross-linked polymeric network.