High elastic modulus polymer electrolytes

US8563168B2 · kind B2 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Nitash Pervez Balsara · Corona, US
• Mohit Singh · Berkeley, US
• Hany Basam Eitouni · Oakland, US
• Enrique Daniel Gomez · State College, US

Key dates

• Filing date: Apr 3, 2007
• Grant date: Oct 22, 2013
• Expiry date: Sep 6, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A polymer that combines high ionic conductivity with the structural properties required for Li electrode stability is useful as a solid phase electrolyte for high energy density, high cycle life batteries that do not suffer from failures due to side reactions and dendrite growth on the Li electrodes, and other potential applications. The polymer electrolyte includes a linear block copolymer having a conductive linear polymer block with a molecular weight of at least 5000 Daltons, a structural linear polymer block with an elastic modulus in excess of 1×107 Pa and an ionic conductivity of at least 1×10−5 Scm−1. The electrolyte is made under dry conditions to achieve the noted characteristics.