Polymer conductor for lithium-ion batteries

US9790323B2 · kind B2 · utility

Assignee

• The Penn State Research Foundation · US

Inventors

• Qing Wang · Plainsboro, US
• Kui Xu · Sunnyvale, US

Key dates

• Filing date: Jul 26, 2013
• Grant date: Oct 17, 2017
• Expiry date: Jul 31, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/70
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

We report a new class of single-ion electrolyte including pendant lithium perfluoroethyl sulfonates. Embodiments may be based on, for example, aromatic poly(arylene ether)s, polyphenylenes, or polyarylene sulfides. The microporous polymer film saturated with organic carbonates exhibits a nearly unity tLi+, state-of-the-art conductivities (e.g. >10−3 S cm−1 at room temperature) over a wide range of temperatures, high electrochemical stability, and outstanding mechanical properties, which enables the membrane to function as both ion conducting medium and separator in the batteries.