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Showing 1 to 15 of 15 for “"layered oxides"”.
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Controlled Attachment of Nanoparticles to Layered Oxides
… low yield.</p> <p>Exfoliated Dion-Jacobson phase layered perovskite HLaNb<sub>2</sub>O<sub>7</sub> (HLN), its organic derivate propoxyl-HLaNb<sub>2</sub>O<sub>7</sub> (pHLN), Ruddlesden-Popper phase perovskite H<sub>2</sub>SrTa<sub>2</sub>O<sub>7</sub> (HSTO) and Aurivillius phase perovskite …
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A Nuclear Magnetic Resonance Approach Towards Understanding Surface Modification and its Influence on Ni-rich Layered Oxides in Li-ion Batteries
… towards a carbon neutral society. Nickel-rich layered oxides are the state-of-the-art material of choice, offering high practical capacities. However, accessing this high capacity induces structural degradation and parasitic electrolyte reactions at the surface. One strategy to mitigate this …
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OXYGEN STORAGE PROPERTIES OF TERNARY METAL OXIDE SYSTEMS FOR CHEMICAL LOOPING REACTIONS
… reversible uptake and release of oxygen in the layered metal oxide system AB2O4 to understand their suitability as oxygen storage materials. We examined their structures at their most reduced, oxidized, and intermediate phases of AFe2O4 for A= Lu, Yb, Y, and In, and studied their structures with …
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Understanding the Chemistries of Ni-rich Layered Oxide Materials for Applications in Lithium Batteries and Catalysis
Ni-rich layered oxide materials have gained significant attention due to the ongoing advances and demands in energy storage. The energy revolution continues to catapult the need for improved battery materials, especially for applications in portable electronic devices and electric vehicles. Lithium …
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Insights on the synthesis, properties, and performance of high-nickel layered oxide cathodes
… the established cathode materials, high-nickel layered oxides, LiNiₓM₁₋ₓO₂ (M = Mn, Al, Co, etc.), with greater than 90% Ni-content, are highly regarded for their unmatched energy density. However, high-Ni cathodes possess severe reactivity and stability concerns, casting doubt on their …
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Data-driven Modeling of Lithium Intercalation Materials
… reaction kinetics from X-ray diffraction of Li layered oxides. The results show the possibility to achieve full utilization of the datasets with quantitative agreement, enable model selection and validation, and advance the modeling of batteries.
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Understanding initial capacity loss in substituted layered oxide cathodes for lithium-ion batteries
<p>Layered oxide LiCoO₂ (LCO) pioneered the commercialization of lithium-ion batteries (LIBs) in 1991, yet the growing demand for higher energy density has driven the development of substituted layered oxides, including LiNiᵧMn𝓏Co₁₋ᵧ₋𝓏O₂ (NMC) and LiNiᵧCo₁₋ᵧ₋𝓏Al𝓏O₂ (NCA). Despite the increased …
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A first principles investigation of transitional metal doping in lithium battery cathode materials
… 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 investigated. The effect of …
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Topochemical Manipulation of Layered Perovskites
… specifically those with divalent cations, within layered perovskites, opening the doors to compounds that can have interesting properties. <p>This reaction series was also applied to the tantalate layered oxides, leading to the formation of the new compound Ni</p> 0.5LaTa2O7 through ion exchange. …
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High-nickel layered oxide cathodes for high-performance lithium-ion batteries
… cathodes for high-performance LIBs. High-nickel layered oxides LiNi [subscript x] M [subscript 1-x] O₂ (x ≥ 0.6, M = Co, Mn, etc.) are one of the most promising candidates and are being extensively pursued. Unfortunately, the practical applicability of high-Ni cathodes is seriously hampered by …
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Phase transformations in layered electrode materials for sodium ion batteries
… I investigate sodium ion intercalation in layered electrode materials for sodium ion batteries. Layered metal oxides have been at the forefront of rechargeable lithium ion battery technology for decades, and are currently the state of the art materials for sodium ion battery cathodes in …
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Stress Effects on Phase Morphological and Compositional Non-uniformity in Intercalation Compounds
… fracture in single-crystal nickel-rich layered oxides (NMC) and intergranular cracking in polycrystalline NMC particles.
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Structure and properties interrelationships of SrBi₂(Ta<sub>1-x</sub>Nb<sub>x</sub>)₂O₉
In recent years, the ferroelectric oxides belonging to the family of layered perovskite, e.g., SrBi₂(Ta₁₋<sub>x</sub>Nb<sub>x</sub>)₂O₉ (or SBTN), were identified as promising candidates for nonvolatile memory applications. SrBi₂Ta₂O₉ (or SBT) thin films were found to exhibit no fatigue up to 10¹² …
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Heterogeneous Redox Chemistries in Layered Oxide Materials for Lithium-Ion Batteries
… gases emission and air pollution issues. Layered oxide lithium-ion battery cathode materials have become commercially successful in the past few decades due to their high energy density, high power density, long cycle life, and low cost. Yet, with the increasing demand for battery …
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Design and synthesis of Ni-rich and low/no-Co layered oxide cathodes for Li-ion batteries
… governs the performance of commercial LIBs. Layered transition metal oxide, i.e., LiNixCoyMn1-x-yO2 (NMC), is one family of cathodes that are widely applied in the prevailing commercial LIBs. With increasing demand for high energy density, the development of layered oxide cathodes is towards …