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Showing 1 to 16 of 16 for “"layered oxide"”.
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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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Aerosol Synthesis of Layered Oxide Cathodes Materials for Lithium-ion Batteries
… forming at lower annealing temperatures and layered oxide LCO emerging at intermediate temperatures. However, higher temperatures led to structural defects due to lithium loss. The annealed particles with the desired structure were subsequently tested in batteries, contributing to a better …
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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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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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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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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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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 …
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Tailoring the electrochemical properties of catholytes for solid-state sodium batteries
… poor interfacial compatibility with layered-oxide cathodes, and reduced cathode-level energy density resulting from inactive components within the composite electrodes. This dissertation investigates the electrochemical properties of solid electrolytes functioning as catholytes in …
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Novel Engineered Nanostructured Complex Oxide for High Temperature Thermoelectric Power Generation
… materials (intermetallic compounds); the layered oxide materials, such as the newly developed nontoxic p-type Ca3Co4O9, are particularly promising for thermoelectric applications because of their high stability at high temperatures in air.;In recent years, the layered cobalt oxide Ca3Co4O …
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Operando Optical Tracking of Ion Dynamics and Degradation in Battery Electrodes
… microscopy to examine state-of-the-art Ni-rich layered oxide cathodes. Here, a continuous change in scattering intensity with state-of-charge (SOC) enables direct observation of kinetically-induced lithium-heterogeneities within single-crystal LiNixMnyCo<sub>(1−x−y)</sub>O₂ (NMC). Upon …
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Design and Assembly of Nanostructured Complex Metal Oxide Materials for the Construction of Batteries and Thermoelectric Devices
… have used to prove my hypotheses - complex metal oxides.</p> <p>Complex metal oxides can be used for both energy generation and storage as they are stable at high temperatures, are benign and inexpensive, and are chemically stable. . Nevertheless, complex metal oxide-based materials have drawbacks …
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Developing new techniques to synthesize layered cathode materials for lithium-ion batteries
… glycerol solvent was LiMn₁/₃Ni₁/₃Co₁/₃O₂ (LMNC) layered oxide cathode material. Temperature's effects on the particles' morphologies, sizes, and electrochemical performances have been studied at four different temperatures. LMN2 was annealed at 900 °C/8hr and shows desirable particles size of …
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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 …
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Multiscale chemistry and design principles of stable cathode materials for Na-ion and Li-ion batteries
… structural and chemical complexities of sodium layered oxide materials to synthesize stable cathode materials for half cell and full cell sodium-ion batteries. Meanwhile, challenges with enabling long term cycling (more than 1000 cycles) are deciphered to be transition metal dissolution and …
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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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Understanding and Controlling the Degradation of Nickel-rich Lithium-ion Layered Cathodes
… more energy from batteries. Nickel-rich layered LiNi<sub>1-x-y</sub>Mn<sub>x</sub>Co<sub>y</sub>O₂ (1-x-y ≥ 0.6, NMC) cathodes could potentially provide the necessary energy to meet the demand of the high energy applications. Overcoming the stability issues from oxygen activation in …