Hybrid solid electrolyte for safer rechargeable sodium batteries with higher energy density

Projektinformationen

HySoBatt

ID Finanzhilfevereinbarung: 101065098

DOI

10.3030/101065098

Projekt abgeschlossen

EK-Unterschriftsdatum 17 August 2022

Startdatum 1 Februar 2023

Enddatum 31 Januar 2025

Finanziert unter

• Marie Skłodowska-Curie Actions (MSCA)

Gesamtkosten

Keine Daten

EU-Beitrag

€ 172 618,56

Koordiniert durch

INTERNATIONAL IBERIAN NANOTECHNOLOGY LABORATORY
Portugal

Periodic Reporting for period 1 - HySoBatt (Hybrid solid electrolyte for safer rechargeable sodium batteries with higher energy density)

Berichtszeitraum: 2023-02-01 bis 2025-01-31

Zusammenfassung vom Kontext und den Gesamtzielen des Projekts

The HySoBatt project seeks to meet the increasing need for safer and more efficient energy storage solutions through the development of hybrid solid electrolytes (HSEs) for sodium-ion batteries (SIBs). Given the escalating worldwide commitments to carbon neutrality, exemplified by the European Green Deal, there is an imperative to shift from lithium-ion batteries due to supply chain vulnerabilities and environmental issues. SIBs, utilizing the plentiful and inexpensive sodium resources, have arisen as a feasible alternative, especially for stationary energy storage and economically sensitive applications.
Current solid-state ion batteries encounter significant hurdles, such as restricted compatibility of electrode materials and safety issues arising from the utilization of flammable organic liquid electrolytes. The HySoBatt project seeks to address these constraints by combining NASICON-type inorganic electrolytes with solid polymer electrolytes, resulting in a novel hybrid solid electrolyte (HSE) characterized by enhanced ionic conductivity and superior mechanical characteristics. This innovative electrolyte formulation is anticipated to augment battery energy density (~200 Wh/kg), prolong cycle life (>500 cycles), and markedly enhance safety by facilitating the utilization of sodium metal anodes
The research employs a multidisciplinary methodology, integrating materials chemistry, electrochemical engineering, and sophisticated characterization techniques. By refining the composition and microstructure of HSEs, the project will advance next-generation solid-state sodium battery technology, promoting European dominance in sustainable energy storage solutions.

Arbeit, die ab Beginn des Projekts bis zum Ende des durch den Bericht erfassten Berichtszeitraums geleistet wurde, und die wichtigsten bis dahin erzielten Ergebnisse

The HySoBatt project focused on advancing solid-state sodium-ion battery (SIB) technology by optimizing hybrid solid electrolytes (HSEs) and high-performance electrode materials. The key activities and achievements include:
Hybrid Solid Electrolyte Development:
Synthesized and characterized polymer-ceramic composite electrolytes to enhance ionic conductivity (>10⁻³ S/cm).
Improved interface compatibility to reduce Na dendrite formation and increase cycling stability.
Electrode Optimization:
Developed high-capacity Na-based cathodes, optimizing Na⁺ diffusion pathways.
Improved electrode-electrolyte interactions for enhanced structural stability.
Prototype Battery Assembly & Testing:
Fabricated solid-state SIB prototypes, achieving high energy density, extended cycle life, and improved safety.
Conducted electrochemical tests validating superior rate performance and temperature tolerance.
These advancements contribute to safer, more sustainable, and high-performance solid-state SIBs.

Fortschritte, die über den aktuellen Stand der Technik hinausgehen und voraussichtliche potenzielle Auswirkungen (einschließlich der bis dato erzielten sozioökonomischen Auswirkungen und weiter gefassten gesellschaftlichen Auswirkungen des Projekts)

The HySoBatt project advances solid-state SIB technology, particularly in HSEs and high-performance cathodes, addressing safety, longevity, and raw material dependence.
Key results include:
Hybrid Solid Electrolytes (HSEs): Enhanced ionic conductivity (>10⁻³ S/cm) and interface stability, reducing dendrite formation.
Optimized Cathodes: Improved Na⁺ diffusion and structural stability for higher energy density and cycle life.
Prototype Demonstration: Assembled solid-state SIBs with superior safety, temperature tolerance, and cycling stability.
Future impact includes reducing lithium/cobalt dependency, supporting EU battery regulations, and enabling industrial adoption via further demonstration, standardization, and commercialization efforts.

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