Sulfide silicon solid-state batteries for enhanced energy density and stress mitigation
Innovative sulfide silicon solid-state batteries offer increased energy density and reduced chemo-mechanical stress using a unique composite approach. This technology aims to improve battery performance and longevity, useful for electric vehicles and portable electronics.
Overview
The development of sulfide silicon solid-state batteries represents a significant leap in battery technology, offering enhanced energy density and reduced chemo-mechanical stress. By leveraging a novel composite of silicon anodes and sulfide solid-state electrolytes, this innovative battery design addresses the common issue of silicon expansion during charging. This technology, supported by collaborations with industry leaders like Ford Motor Company, promises to extend the operational range and lifespan of batteries, making it ideal for applications in electric vehicles and portable electronics.
Technical specifications
- Silicon Anodes: Capable of expanding up to 300% during charging, balanced by the sulfide electrolyte's flexibility and toughness.
- Sulfide Electrolytes: Formulated to endure stress without fracturing, enhancing battery durability.
- Fatigue Strength Measurement: Utilizes in situ ultrasonic transmission techniques to assess mechanical property changes during cycling.
- Full Cell System Development: Incorporates nickel-rich cathodes with silicon anodes to optimize energy density and mechanical dynamics.
Technology readiness level
This technology is currently at TRL 2, focusing on proof of concept demonstrations with future plans for commercial development through collaboration with industry partners.
About Drexel University
Drexel University is a comprehensive private research university in Philadelphia, recognized for an urban, industry‑embedded model anchored by a longstanding cooperative education program. Year‑round co‑ops create a ready talent pipeline and align sponsored research with real‑world needs. The campus sits within an innovation district with co‑located labs and incubators, enabling companies to collaborate on prototyping with faculty. Through the university’s medical college and clinical partners, industry teams can access clinical expertise and translational pathways. Research is supported by competitive federal funding from agencies such as NIH, NSF, DOE, and DoD. A dedicated technology transfer office manages IP, licensing, corporate research agreements, and startup formation.
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