Results 21 to 30 of about 51,351 (261)

Developing CeO2-CoAl2O4 Semiconductor Ionic Based Heterostructure Composite Electrolyte for Low-Temperature Solid Oxide Fuel Cells (SOFCs)

open access: yesCrystals, 2023
Semiconductor ionic electrolytes, especially heterostructure composites, have a significant role in enhancing oxide ion conductivity and peak power density (PPD) because of their interfacial contact.
Yiwang Dong   +8 more
doaj   +1 more source

Chemistry of accessory chromian spinel in serpentinites from the Penjwen ophiolite rocks, Zagros thrust zone, [PDF]

open access: yesKirkuk Journal of Science, 2009
Chromian spinel is a widespread accessory mineral in ultramafic rocks of the Penjwen ophiolite, occurring in two modes; fresh grains in dunite rocks that crop out in the eastern part and altered grains in serpentinized peridotites in the western part of ...
Sabah A.Ismail
doaj   +1 more source

Fabrication and Characterization of Hybrid Films Based on NiFe2O4 Nanoparticles in a Polymeric Matrix for Applications in Organic Electronics

open access: yesNanomaterials, 2023
Hybrid films for applications in organic electronics from NiFe2O4 nanoparticles (NPs) in poly(3,4 ethylene dioxythiophene), poly(4-styrenesulfonate) (PEDOT:PSS), and poly(methyl methacrylate) (PMMA) were fabricated by the spin-coating technique.
María Elena Sánchez Vergara   +5 more
doaj   +1 more source

Listvenites: new insights of a hydrothermal system fossilized in Cerro Matoso peridotites, Montelíbano, Córdoba Department, Colombia

open access: yesBoletín Geológico, 2020
The products of metasomatic alteration (e.g., carbonation) of peridotites are called listvenites. Based on a description of the outcrops in the laterite deposit at Cerro Matoso located in the NW of Colombia, the mineralogical composition confirmed by ...
Andrés Castrillón, Javier Guerrero
doaj   +1 more source

Densification during hot-pressing of carbon nanotube–metal–magnesium aluminate spinel nanocomposites [PDF]

open access: yes, 2007
The densification by hot-pressing of ceramic–matrix composites containing a dispersion of carbon nanotubes (CNT), mostly single-walled, is studied for the first time.
Lefèvre-Schlick, Florent   +4 more
core   +1 more source

Spinel-Anchored Iridium Single Atoms Enable Efficient Acidic Water Oxidation via Intermediate Stabilization Effect

open access: yes, 2023
Iridium oxide is considered the only practical catalyst for oxygen evolution reaction (OER) in commercial proton exchange membrane (PEM) electrolyzers.
Xulin Mu (14373912)   +15 more
core   +1 more source

The Spinel Explorer - Interactive Visual Analysis of Spinel Group Minerals [PDF]

open access: yes, 2014
Geologists usually deal with rocks that are up to several thousand million years old. They try to reconstruct the tectonic settings where these rocks were formed and the history of events that affected them through the geological time.
Gargiulo, Florencia   +6 more
core   +2 more sources

Effects of microsilica content on microstructure and strength of lightweight castable refractories containing porous corundum-spinel aggregate [PDF]

open access: yesScience of Sintering, 2009
High-strength, lightweight castable refractories based on spinel were prepared by introducing porous corundum-spinel aggregate and appropriate microsilica.
Yan W., Li N., Han B.Q.
doaj   +1 more source

Characterization of Red, Pink, Orange, and Purple Gem-Quality Spinel from Four Important Areas

open access: yesCrystals, 2023
Spinel is a precious stone with a long history. In ancient societies spinel was considered to be an imitation of ruby. With the depletion of ruby mineral resources, gem—grade spinel has attracted more and more attention from consumers. In the last decade,
Qian Xu, Bo Xu, Yujie Gao, Siying Li
doaj   +1 more source

Thermal Growth Cu1.2Mn1.8O4 Spinel Coatings on Metal Interconnects for Solid Oxide Fuel Cell Applications

open access: yesMetals, 2017
A novel cobalt-free Cu1.2Mn1.8O4 spinel coating is prepared and evaluated for the metal interconnect of solid oxide fuel cell. Mn-35Cu and Co-35Mn alloy coatings are deposited on 430 SS substrate and then in-situ oxidized in air at 750 °C for 100 h.
Pingyi Guo   +4 more
doaj   +1 more source

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