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Results for “oxidation”
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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Chemistry of Select Electroceramic Materials: Lead zirconium titanate (PZT) indium tin oxide (ITO) and zinc oxide.
Abstract not provided.
Key role of paracrystalline motifs on iridium oxide surfaces for acidic water oxidation
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Conversion of CO2 on a highly active and stable Cu/FeOx/CeO2 catalyst: tuning catalytic performance by oxide-oxide interactions
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Targeting complex plutonium oxides by combining crystal chemical reasoning with density-functional theory calculations: the quaternary plutonium oxide Cs 2 PuSi 6 O 15
The stability of the novel Pu( iv ) silicate, Cs 2 PuSi 6 O 15 , was predicted from a combination of crystal chemical reasoning and DFT calculations and confirmed by its synthesis via flux crystal growth.
Strong reinforcement effects in 2D cellulose nanofibril-graphene oxide (CNF-GO) nanocomposites due to GO-induced CNF ordering
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The sensitive surface chemistry of Co-free, Ni-rich layered oxides: identifying experimental conditions that influence characterization results
Recent studies have suggested that Co-free, Ni-rich layered cathodes (e.g., doped LiNiO2) can provide promising battery performance for practical applications. However, these layered cathodes suffer from significant surface instability during various stages of the sample history, which generates inherent challenges for achieving stable battery performance and obtaining statistically representative characterization results. To reliably report the surface chemistry of these materials, delicate controls of stepwise sample preparation are required. In this study, we aim to reveal how the surface chemistry of LiNiO2 based materials changes with various environments, including human exhalation, sample storage, sample preparation, electrochemistry cycling, and surface doping. Our results demonstrate that the surface of these materials is highly reactive and prone to alter at various stages of sample handling and characterization. The sensitive surface could impact the interpretation of the surface chemical and structural information, including surface carbonate formation, transition metal reduction and dissolution, and surface reconstruction. Importantly, the heterogeneity of the surface degradation calls for a consolidation of nanoscale, high-resolution characterization, and ensemble-averaged methods in order to improve statistical representation. Furthermore, the doping chemistry can effectively mitigate the surface degradation and improve overall battery performance due to the enhanced surface oxygen retention. Our study highlights the necessity of strict measurements through complementary characterizations at multiple length scales to eliminate unintentional biased conclusions.
The characterisation of commercial 2D carbons: graphene, graphene oxide and reduced graphene oxide
Commercial 2D carbon materials are shown to be largely nanographite with a small percentage of single layer material present.
Machine learning improves predictions of agricultural nitrous oxide (N 2 O) emissions from intensively managed cropping systems
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Chloroplast Autophagy and Ubiquitination Combine to Manage Oxidative Damage and Starvation Responses
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High-Frequency Metal-Oxide Varistor Modeling Response to Early-time Electromagnetic Pulses.
Abstract not provided.
Slab-derived sulfate generates oxidized basaltic magmas in the southern Cascade arc (California, USA
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IC w22_phadiagractox Highlight: Systematics of the ambient melting points of stoichiometric uranium oxides and mixed-oxide (MOX) fuel [Slide]
Abstract not provided.
Prospects of hydrogen cogeneration and carbon dioxide utilization in electrochemical refineries for ethylene production via oxidative coupling of methane: A techno-economic assessment
Ethylene is recognized as one of the most significant chemicals globally. The projected ethylene production for 2023 stands at 227.6 million tonnes, with expectations of continued demand growth. The primary use of ethylene, accounting for over 76%, lies in the production of plastics such as polyethylene, polyvinyl chloride, and polystyrene. Despite the enduring carbon retention potential of plastics themselves, traditional ethylene feedstock production from fossil resources contributes substantially to greenhouse gas emissions, ranging from 0.29 to 2.29 kg CO2 /kg Ethylene depending on various factors like feedstock and process design. Various decarbonization strategies, including the utilization of hydrogen as a primary heat source, have been proposed to reduce the carbon footprint of ethylene production, but their efficacy remains limited, offering at best a 0–30% reduction in on-site CO 2 emissions.
Influence of Spontaneous Surface Oxide Decomposition on High Temperature Carbon Oxidation Rates
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Influence of Spontaneous Surface Oxide Decomposition on High Temperature Carbon Oxidation Rates
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Radiation-Promoted Redox in the PuO 2 -H 2 O System: Kinetic Control of Oxidation-State Concentrations in the Oxide and in Solution
The spontaneous alpha promoted PuO 2 -H 2 O reaction proceeds with establishment of a steady state that is unattainable via an equilibrium-controlled reaction or a sequence of equilibrium reactions.
Replication Data for: Hydrogen migration at restructuring palladium-silver oxide boundaries dramatically enhances reduction rate of silver oxide
The data underlying this published work have been made publicly available in this repository as part of the IMASC Data Management Plan. This work was supported as part of the Integrated Mesoscale Architectures for Sustainable Catalysis (IMASC), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award # DE-SC0012573.