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Showing 1 to 12 of 12 for “"MIEC"”.
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Lithium deposition and stripping in solid-state battery via coble creep
… in mixed ionic-electronic conductor (MIEC) hollow tubules, an intriguing result that (a) Li metal can flow and retract inside 3D MIEC channels as a single crystal, (b) Coble creep dominates via interfacial diffusion along the MIEC/metal phase boundary, (c) this MIEC electrochemical …
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Water splitting for hydrogen and syngas production over a novel bi-layer perovskite membrane
… 2 emissions. Mixed ionic-electronic conducting (MIEC) membrane is one of the most promising technologies for CO2 mitigation due to its potential to enhance the efficiency and performance in various industrial applications. The perovskite MIEC membranes have high oxygen permeability and 100% …
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Controlling and understanding electro-chemo-mechanical properties of layered cuprate thin films
… mixed ionic-electronic conducting (MIEC) ABO₃ perovskite oxides have been extensively explored as model systems to understand oxygen surface exchange kinetics for solid oxide fuel cell (SOFC) electrodes. Traditionally, transport properties are examined as functions of type and …
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Electrochemomechanics in Mixed Ionic Electronic Conductors and solid oxide cells
… in Mixed Ionic Electronic Conductors (MIEC). A continuum model is formulated to simulate the transport of ionic defects and the stress distribution in the conductor arising from the chemical expansion associated with the defects. First, a finite element formulation of the model is …
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Understanding and Controlling the Surface Chemistry of Oxides to Enhance Catalytic Activity at Elevated Temperatures
… using mixed ionic-electronic conductors (MIEC) as a backbone electrode and OCM-active secondary particles deposited onto the surface of the MIEC electrode. Optimizing the dispersion of the OCM-active secondary particles has been proposed as a promising way for improving the OCM selectivity …
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High temperature ceramic membrane for CO₂ reuse and syngas production
… use mixed ionic-electronic conducting membrane (MIEC) in CO2 reuse and syngas production by taking the advantage of low quality energy resource. The membrane under investigation is a La0,9Cao01FeO3 -6 (LCF) perovskite membrane. Membranes with perovskite structure have shown high oxygen …
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Defect equilibria and electrode kinetics in Prx̳Ce1̳-̳x̳O2̳-̳[̳d̳e̳l̳t̳a̳]̳ mixed conducting thin films : an in-situ optical and electrochemical investigation
… PCO shows mixed ionic and electronic conducting (MIEC) characteristics at relatively high pO2 regimes (e.g. air), which is beneficial for solid oxide fuel cells (SOFCs) cathode performance. The Pr impurity levels in PCO allow for optical transitions (2.0 - 3.3 eV), leading to the red coloration of …
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Fundamental studies of perovskite related oxide thin films for oxygen electrocatalysis at intermediate temperatures
… Mixed ionic and electronic conductors (MIECs) such as Lai.xSrxCoO₃-[delta] (LSC₁₁₃) and Lai-xSrxCo1-yFeyO3-[delta] (LSCF₁₁₃) are currently utilized for applications including oxygen permeation membranes and solid oxide fuel cells (SOFCs), but alternative materials with higher catalytic …
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Electro-chemo-mechanical Studies of Perovskite-Structured Mixed Ionic-Electronic Conducting SrSni-₁₋xFexO₃₋x/₂₊[epsilon]
… the mixed ionic and electronic conducting (MIEC) perovskite-structured SrSni-₁₋xFexO₃₋x/₂₊[epsilon] (STF) materials system was identified as a promising candidate for SOFC cathodes given rapid oxygen surface exchange kinetics. The exchange kinetics were correlated with the minority electron …
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Chromium poisoning mitigation in solid oxide fuel cell air electrodes: mechanisms for Cr deposition and removal
… Cr-tolerant mixed electronic/ionic conducting (MIEC) electrode materials.
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$^{17}$O Solid-State NMR Spectroscopy of Functional Oxides for Energy Conversion
… used as mixed ionic-electronic conductors (MIECs) for SOFC cathodes, and (2) further uses of multinuclear variable-temperature NMR spectroscopy, with emphasis on $^{17}$O NMR results, to elucidate mechanistic details of oxide-ion motion and sublattice exchange in a novel family of promising …
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Atomistic modeling of mixed ion/electron conductors exhibiting configurational disorder: Application to iron-substituted strontium titanate
… mixed ion-electron conductors (MIECs). The perovskite-derivative MIECs are of interest in a wide range of applications due to their ability to conduct both ions and electrons. A classic example is iron-substituted strontium titanate (SrTi1-xFexO3-d, STF) which is a promising …