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Seminar | Argonne Collaborative Center for Energy Storage Science

Polymer Electrolyte with New Conduction Mechanism: Properties and Applications in Batteries

Solid-State Battery Colloquium

Abstract: Polymer materials are ubiquitous in current battery technology and are commonly used as binders, separators, and packaging. Poly(ethylene oxide) (PEO) was first discovered to dissolve lithium salts in 1973, making its use as an electrolyte possible. Today, it is still one of the most intensely studied and widely used polymer electrolytes; however, the conductivity is several orders of magnitude lower than in inorganic solid electrolytes. This easy-to-synthesize, polymer electrolyte has the potential to be a superior candidate to present-day inorganic solid electrolytes. We will report the properties of a breakthrough polymer technology with a new Li+ conduction mechanism that does not rely on ion-hopping or chain-segmental motion as with PEO. This new polymer electrolyte supports high-Li+-conductivity while maintaining a wide electrochemical window. We will present the performance of this electrolyte with a wide variety of anodes and cathodes. Also, the polymer can conduct OH ions and properties and applications will be presented.