Solid-State Electrolytes for Advanced Energy Storage

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Achieving ambitious climate change targets (e.g., Clean Growth and Road to Zero strategies) demands electrochemical energy storage technologies with enhanced safety, stability and energy densities. Solid ion-conducting electrolytes are central to this mission and will facilitate both all-solid-state batteries and advanced chemistries based on a metal anode. However, materials that combine sufficient ionic conductivity with desirable processing and interfacial properties remain elusive. The aims of this project are to: - Design new families of inorganic of solid-state electrolytes both in bulk (electrolyte) and thin film (protective layer) formats - Test these components in traditional and beyond Li-ion cells - Develop computational models for these systems and perform validation using experimental data and measured material properties - Utilise cell performance and modelling results to optimise material and device design Structural properties will be determined using x-ray and neutron diffraction and Raman spectroscopy. Conductivity and stability will be assessed using a combination of electrochemical impedance spectroscopy and cyclic voltammetry, in addition to charge/discharge behaviour. Analysis of cycled devices using, e.g., XPS, AFM, x-ray tomography will give chemical and physical insight at interfaces. Initially we will target crystalline Zintl phases and oxide thin films synthesized using scalable solution-based techniques. These relatively unexplored families with wide chemical tunability will function to test design principles for stable, ion-conducting solids fundamental to advanced energy storage. - Design new families of inorganic of solid-state electrolytes both in bulk (electrolyte) and thin film (protective layer) formats- Test these components in traditional and beyond Li-ion cells- Develop computational models for these systems and perform validation using experimental data and measured material properties- Utilise cell performance and modelling results to optimise material and device designStructural properties will be determined using x-ray and neutron diffraction and Raman spectroscopy. Conductivity and stablility will be assessed using a combination of electrochemical impedance spectroscopy and cyclic voltammetry, in additon to charge/discharge behavior. Analysis of cycled devices using, e.g., XPS, AFM, x-ray tomography will give chemical and physical insight at interfaces. Initially we will target crystalline Zintl phases and oxide thin films synthesized using scalable solution-based techniques. These relatively unexplored families with wide chemical tunability will function to test design principles for stable, ion-conducting solids fundamental to advanced energy storage.