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Showing 1 to 8 of 8 for “"Layered transition metal oxides"”.
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Structural studies of layered transition metal oxides
A number of transition metal oxide materials, both new and previously reported, have been<br/>synthesised, their structures based on the n = 2 Ruddlesden-Popper layered perovskites. Their<br/>structures were determined through Rietveld refinement against X-ray and neutron powder<br/>diffraction, …
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DESCRIPTION OF POLARONS IN LAYERED TRANSITION METAL OXIDES USING THE r2SCAN DENSITY FUNCTIONAL WITH FULLY NONLOCAL CORRECTIONS AND EFFECT OF STRAIN ON THE BAND GAP OF MONOLAYER MOLYBDENUM DISULFIDE
… materials. Our study on small polaron defects in layered transition-metal oxides demonstrates this. Using literature values for U and Ud, we investigated birnessite (KnMnO2, n = 0.03) and KnNiO2, n = 0.03. With one K atom intercalated in a supercell, both materials show a localized eg polaronic …
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A first principles investigation of transitional metal doping in lithium battery cathode materials
… work is to understand the properties of mixed-metal intercalation oxides. Using first-principles methods, the effect of doping on the mixing, energetic, and voltage properties as well as the phase diagrams of lithium transition-metal oxides for lithium battery cathode materials was …
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Transition Metal Oxides for Cathode of Li-ion Battery
Layered transition metal oxides are used as cathode materials in Li-ion batteries particularly in those used in the automobile industry. With growing demands for high energy supply for practical applications, Ni -rich cathodes have become a popular option due to their high theoretical capacity; …
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NMR Studies of Interfacial Reactions in Lithium-Ion Batteries
… the electrolyte solution at positive electrodes, layered transition metal oxides (LiMO2, M = Ni, Mn, Co or Al, e.g. LiCoO2, LCO; LiNixMnyCo1-x-yO2, NMC), are investigated by a combination of solution NMR spectroscopy and operando gas measurements. The soluble products formed at LCO electrodes are …
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Novel Syntheses and Surface Modifications of Electrode Materials for Superior Lithium-Ion Batteries
… by depositing ultrathin conformal amphoteric oxides via atomic layer deposition (ALD). In the case of ZnO coating, the thickness of ZnO ALD layers can be finely optimized at atomic scale by varying ALD growth cycles. Six ZnO ALD layers demonstrate to have the optimal thickness (~ 1 nm) for the …
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Electron microscopy study of degradation mechanisms in Ni-rich transition metal oxide cathodes for Li-ion batteries
Li-ion batteries have a pivotal role in the transition towards electric transportation. This drastic societal change depends on high energy, sustainable, and long lifetime batteries. Among the most promising cathode active materials that enable such batteries is the class of Ni-rich layered …
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Understanding the intrinsic electrochemistry of ni-rich layered cathodes
… with energy storage. Li-ion batteries employing layered transition metal oxide cathodes are one of the most technologically important energy storage technologies. However, current Li-ion batteries are unable to access their full theoretical capacity and suffer from performance limiting …