A5041357691- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Advanced Battery Materials and Technologies
- Extraction and Separation Processes
- Semiconductor materials and devices
- Recycling and Waste Management Techniques
- Non-Destructive Testing Techniques
- Supercapacitor Materials and Fabrication
- Machine Learning in Materials Science
- Electron and X-Ray Spectroscopy Techniques
- Semiconductor materials and interfaces
Georgia Institute of Technology
2023-2025
Abstract “Anode‐free” solid‐state batteries (SSBs), which have no anode active material, can exhibit extremely high energy density (≈1500 Wh L −1 ). However, there is a lack of understanding the lithium plating/stripping mechanisms at initially lithium‐free electrolyte (SSE) interfaces because excess metal often used. Here, it demonstrated that commercially relevant quantities (>5 mAh cm −2 ) be reliably plated moderate current densities (1 mA using sulfide SSE Li 6 PS 5 Cl....
Solid-state batteries with Li metal anodes can offer increased energy density compared to Li-ion batteries. However, the performance of pure has been limited by morphological instabilities at interface between and solid-state electrolyte (SSE). Composites other materials such as carbon alloys have exhibited improved cycling stability, but mechanisms associated this enhanced are not clear, especially low stack pressures needed for practical viability. Here, we investigate structural evolution...
Solid-state batteries (SSBs) with silicon anodes could enable improved safety and energy density compared to lithium-ion batteries. However, degradation arising from the massive volumetric changes of during cycling is not well understood in solid-state systems. Here, we use operando X-ray computed microtomography reveal micro- macro-scale chemo-mechanical processes SSBs. Mud-type channel cracks driven by biaxial tensile stress form across electrode delithiation. We also find detrimental at...
Solid-state batteries (SSBs) with silicon anodes could enable improved safety and energy density compared to lithium-ion batteries. However, degradation arising from the massive volumetric changes of during cycling are not well understood in solid-state systems. Here, we use operando X-ray computed microtomography reveal micro-to-macro-scale chemo-mechanical processes SSBs. Mud-type channel cracks driven by biaxial tensile stress form across electrode delithiation. We also find detrimental...
Cyclic volume changes and non-uniform electrodeposition/stripping, among other cycling-induced chemo-mechanical degradation of lithium metal lithium-alloy solid state batteries, lead to contact loss between the anode electrolyte separator. Operando experiments have shown accelerated short-circuiting behavior due in “anode-free” solid-state batteries. Simulations relationship active area fraction ratio effective conductivities regular-shape configurations. Through modeling using imputed...
Solid-state batteries (SSBs) could offer higher energy density and improved safety compared to traditional Li-ion batteries. Challenges remain, however, including contact loss/fracture the effective design of high-conductivity cathode composites. Intercalation-type oxides such as LiNi x Mn y Co 1-x-y O 2 (NMC) are widely used in SSB cells. However, these materials have limited capacity expensive. Conversion sulfur, sulfides, fluorides, on other hand, show much been investigated for with...
Lithium (Li) metal anodes are widely studied as replacements for current graphite they have projected higher energy density. However, Li-metal batteries face issues with dendrite propagation and the eventual formation of dead Li. Solid-state (SSBs) a promising pathway to realize batteries, which is attributed their ability improve safety stability through use solid-state electrolytes. In particular, “anode-free” SSBs can enable high densities by forming Li anode in situ. The initial...
Characterizing buried interfaces in solid-state batteries is critical for understanding and enabling this next-generation energy storage technology [1]. X-ray computed tomography (XCT) a powerful characterization tool owing to its high spatial resolution (<1 µm), non-destructive nature, access interfaces, three-dimensional imaging capabilities [2]. Additionally, synchrotron-enabled XCT can collect resolution, datasets with appropriate temporal resolutions observe the evolution of under...
To achieve high energy density and specific in solid state batteries (SSBs), “anode-free” battery configurations have garnered a great deal of interest. Anode-free systems substantially increase volumetric compared to standard Li-ion lithium metal by removing the graphite anode excess lithium, respectively. Additionally, manufacturing is simplified anode-free need process metal. However, advance this technology, it critical understand how deposits strips on current collectors throughout...