A5107772118- Advancements in Solid Oxide Fuel Cells
- Electronic and Structural Properties of Oxides
- Gas Sensing Nanomaterials and Sensors
- Catalytic Processes in Materials Science
- Magnetic and transport properties of perovskites and related materials
- Catalysis and Oxidation Reactions
- Molten salt chemistry and electrochemical processes
- Nuclear materials and radiation effects
- Semiconductor materials and devices
- Electronic Packaging and Soldering Technologies
- Advancements in Battery Materials
- Thermal Expansion and Ionic Conductivity
- Chemical Looping and Thermochemical Processes
- Fuel Cells and Related Materials
- 3D IC and TSV technologies
Xi'an University of Architecture and Technology
2024
Redox Power Systems (United States)
2015-2023
Fuzhou University
2023
Taiyuan University of Technology
2023
University of Maryland, College Park
2011-2020
This study explores cofiring ceria (CeO2) with NiO and 8 mol% yttria-stabilized zirconia (YSZ) to form Ni-based cermet anodes for high-temperature solid oxide fuel cells (SOFCs) operating on syngas n-butane/steam feeds. Particular attention is paid the suppression of carbon deposit growth in carbonaceous CeO2 was cofired YSZ a porous Ni anode support layer after reduction H2 at 800°C. The (1 mm thick) combined Ni/YSZ functional (∼25 μm thick), dense electrolyte (10–20 La0.8Sr0.2MnO3−x...
Abstract In operando, ambient-pressure x-ray photoelectron spectroscopy (AP-XPS) has been used to evaluate surface states of gadolinia-doped ceria (GDC) thin-film electrodes during H 2 oxidation and O electrolysis, on yttria-stabilized zirconia (YSZ)-supported solid oxide electrochemical cells (SOCs). Porous nickel (Ni) gold (Au) overlayers deposited separate GDC thin films served as current collectors potential electrocatalysts facilitate heterogeneous chemistry for or electrolysis....
To better understand carbon oxide chemistry in Ni/GDC anode functional layers, we have studied CO oxidation and 2 dissociation on sputtered thin-film GDC (Ce 0.8 Gd 0.2 O 1.9 ) electrodes with open Ni overlayers. The well-characterized electrode allows optical access to study fundamental reactions around interfaces both dry wet environments. isolate the chemistry, cell results were compared those from films less active Au Dry are slower than their H analogs fitted exchange current densities...
<title>Abstract</title> Y doped BaZrO<sub>3</sub> is a promising cermet hydrogen separation membrane material. The conductivity of ceramics depends on the concentration their oxygen vacancies. In this study, BaZrO3 with and Pr were prepared by citrate sol-gel combustion method. effects doping ceramic phase structure, vacancies micromorphology studied XRD, Raman spectroscopy, XPS SEM techniques. conductivity, permeability stability...
SOFCs with GDC electrolytes present challenges for stack modeling due to the variation in conductivity and chemical activity of as a function effective oxygen partial pressure P O2 , which varies significantly down channel SOFC anodes increasing fuel utilization. This paper presents 3-D model an intermediate-temperature electrolytes, Ni/GDC anodes, LSCF/GDC cathodes. The uses fitted kinetics capture, internal reforming water-gas-shift anode well variations open circuit voltage activation...
Thin-film GDC (Ce0.8Gd0.2O2-x 300 nm thick) electrodes with porous Ni or Au metal overlayers (300 were sputter-deposited on polycrystalline YSZ substrates and tested in single-chamber cells. With a back-side Pt-counter electrode, the electrochemical cells characterized by linear-sweep voltammetry impedance spectroscopy between 650 to 750 ºC mixtures of H2/H2O/Ar diluent. To complement electro-chemical tests, ambient-pressure XPS at Advanced Light Source was performed active H2/H2O measure...
Abstract not Available.
Abstract not Available.