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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Expanding the Phase Space for Halide-Based Solid Electrolytes: Li–Mg–Zr–Cl Spinels
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Competing Polar and Antipolar Structures in the Ruddlesden-Popper Layered Perovskite Li[subcript 2]SrNb[subcript 2]O[subcript 7]
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Reversible Intercalation of Li Ions in an Earth-Abundant Phyllosilicate Clay
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Probing the Lithium Substructure and Ionic Conductivity of the Solid Electrolyte Li[subscript 4]PS[s
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Direct Lithium Extraction from α-Spodumene through Solid-State Reactions for Sustainable Li 2 CO 3 Production
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Infrared Spectroscopy of Li + Solvation in Diglyme: Ab Initio Molecular Dynamics and Experiment
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Probing and Interpreting the Porosity and Tortuosity Evolution of Li-O 2 Cathodes on Discharge through a Combined Experimental and Theoretical Approach
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Interplay between Intermolecular and Intramolecular Singlet Fission in Thin Films of a Covalently Li
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Evaluation of Chemical and Structural Homogeneity in Single Particles of Li 1-x Ni 0.33 Mn 0.33 Co 0.33 0 2
Identifying irreversible phenomena at single particles of battery cathode materials is an important step to understanding degradation pathways upon cycling. LiNi 0.33 Mn 0.33 Co 0.33 O 2 (LiNMC(111)) single particles of size 200 x 300 nm were studied before and after cycling using Scanning X-ray Diffraction Microscopy (SXDM) and ptychographic microscopy. Here, with resolutions of 30 and 5 nm, respectively, it was possible to map the (003) reflection and nickel oxidation state changes in single particles at different states of charge. While the compositions measured by the c lattice parameter from SXDM were found to be homogeneous, mapping at higher resolution using ptychography revealed that Ni oxidation states decrease sharply 0-25 nm from the edge, then trail into a steady oxidation state toward the interior of the particle. Within the 30 nm length scale, we conclude that LiNi 0.33 Mn 0.33 Co 0.33 O 2 single particles are highly structurally reversible.