Scaling-Up and Roll-to-Roll Processing of Highly Conductive Sulfide Solid-State Electrolytes

This project aims to identify and address key technical barriers in scale-up synthesis and roll-to-roll processing of highly conductive solid-state electrolytes (SSE) by leveraging PNNL’s patented SSE materials, Ampcera’s environmentally friendly manufacturing capability, and the University of Washington’s roll-to-roll processing. The ultimate goals of the project are:

1) the development of novel sulfide SSEs with room-temperature Li⁺ conductivity > 5 mS/cm and Li/SSE interfacial resistance <5 Ωcm²‍

2) scalable production of sulfide SSEs at 1 metric ton/year

3) a high throughput roll-to-roll processing of highly conductive (>1 mS/cm) and ultra-thin solid film (10-30 μm) at >1 meter/min. The materials and solid film achieved in the project will be tested at practical conditions and validated in a realistic >5 Ah pouch cell format with an achievable energy of at least 350 Wh/Kg.

The success of the project will enable the mass production of high-performance sulfide SSEs and film to support DOE’s labs, universities, and industries for the development of next-generation all-solid-state Li batteries for electric vehicles (EVs).

Commercial Value: Exclusive licensing to three U.S. patents and a proprietary sulfide solid electrolyte formulation. 

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