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Meeting MS&T22: Materials Science & Technology
Symposium Energy Materials for Sustainable Development
Presentation Title Probing BaCo<sub>0.4</sub>Fe<sub>0.4</sub>Zr<sub>0.2-X</sub>Y<sub>X</sub>O<sub>3-δ</sub> Triple-Conductors as Cathode Materials for Protonic Ceramic Fuel Cells
Author(s) Jack H. Duffy, Yuqing Meng, Harry W. Abernathy, Kyle S. Brinkman
On-Site Speaker (Planned) Jack H. Duffy
Abstract Scope Protonic ceramic fuel cells (PCFCs) are a promising technology to efficiently convert fuel into energy. However, sluggish kinetics at intermediate temperatures necessitates improved cathode materials for future commercialization. In this work, BaCo<sub>0.4</sub>Fe<sub>0.4</sub>Zr<sub>0.2-X</sub>Y<sub>X</sub>O<sub>3-δ</sub> (BCFZY<sub>X</sub>) triple-conducting materials are characterized for their bulk material properties. Oxygen permeation and hydrogen permeation are utilized to probe the bulk ionic conductivity of the compositional range. DC four-point probe with electrical conductivity relaxation revealed sufficient electrical conductivity and excellent surface exchange kinetics. With increasing yttrium content, there is a general tradeoff between the materials’ bulk conductivity with their surface reaction kinetics. These measurements revealed the novel material BaCo<sub>0.4</sub>Fe<sub>0.4</sub>Y<sub>0.2</sub>O<sub>3-δ</sub> (BCFY), which is mixed with BaCe<sub>0.7</sub>Zr<sub>0.1</sub>Y<sub>0.1</sub>Yb<sub>0.1</sub>O<sub>3-δ</sub> (BCZYYb) to form a novel composite cathode. The BCFY-BCZYYb cathode is synthesized in 4:1, 2:1, and 1:1 ratios to achieve high performance PCFC composite cathodes. These results highlight the tunability of triple ionic-electronic conductors for both single-phase and composite cathode development.


A Metal-insulator Transition in a Complex Oxide at T ≥ 293K
A Thermodynamic and Properties Database for Permanent Magnetic Materials
Ab Initio Modeling of Ionic and Electronic Conductivity of La2NiO4+δ Cathode Material for Solid Oxide Fuel Cell
Bandgap Engineering and Electrochemical Properties of Disordered LaFeO3 and Heterostructures
Bulk Nanostructured Oxide-metal Composites for Wind Turbines and Electric Vehicles
Calcium Cobaltate Based Composite Ceramics for Thermoelectric Energy Harvesting
Caloric Materials for New Heat-management Technologies
Ceramic-based Solid-state Sodium-ion Batteries Fabricated in a Single Step via Cold Sintering
Computational Study of Iron/Nitrogen Doped Carbon Electrocatalysts for Sustainable Energy Technology
Cycling Demonstration of Sequential Deposition Synthesis-synthesized Lithium Garnet Films in Full Batteries
Design, Modeling, and Direct Write Additive Manufacturing (DWAM) of Electrodes for Batteries
Detection of Proton Incorporation and Diffusion in Electrolyte Materials for SOFCs
Effect of Infiltrates on Cr-poisoning in Solid Oxide Fuel Cell Cathode Using Microstructurally Resolved HPC Simulations of Electrochemistry
Electret Energy Sources Based on Electrical Conductors
Electronic Structure Calculations of Materials Converting Energy: Thermoelectrics and Ion Batteries
Electrospun Vanadium Pentoxide Nanofibers as a Photocathode in a Light Rechargeable LIB
Experimental and Computational Investigations of the Multiple Impurities Effects on the SOFC Cathode Materials
Fabrication Strategies for Lightweight and High-performance Tubular Solid Oxide Fuel Cells
Highly Stable and Efficient Perovskite Solar Cells with Functional Nanocomposites
Iron Oxide Redox Cycling for Low-cost Iron-air Batteries
L-13: Cu2O Single Crystal Synthesis via Strain-Induced Abnormal Grain Growth
L-14: Effects of Activation on Generated Biochar from Co-pyrolyzed Soursop Seeds (Annona muricata) and Mango Seeds (Magnifera indica) Biomass.
L-15: Electrochemical Properties of a Titanium-Substituted KVPO4F Cathode for K-Ion Batteries
L-16: Nucleation and Growth of Cu2O: Effect of pH, Potential and Substrate
L-17: Proton Conducting Layered Perovskites of the Form Ba5Er2Al2ZrO13
L-18: Thin-Film Glassy Solid Electrolytes Enabling High Energy Density Li Solid State Batteries
Low-temperature Integration of Oxide-based All-solid-state Batteries Using a Ceramic Binder
Machine Learning Methods for Predicting Microstructural Changes in Solid Oxide Cell Electrodes
Metal Composite Nano-Catalyst Enhanced Solid Oxide Fuel Cell Anodes for Increased Stability within Hydrocarbon Containing Fuels
Molecular Pathways to Al2S3 for Next Generation Battery Application
Molecular Precursors for Li2S as Cathode Material for Sustainable Energy Storage
Multi-layer Numerical Modeling of Selective Laser Melting Based Additive Manufacturing of Thermoelectric Powders
Non-precious Metal Catalysts with Core@shell Structure for AEM Electrolyzers
Probing BaCo0.4Fe0.4Zr0.2-XYXO3-δ Triple-Conductors as Cathode Materials for Protonic Ceramic Fuel Cells
Processing and Characterization of Li7La3Zr0.5Nb0.5Ta0.5Hf0.5O12 High-entropy Li-garnet Electrolyte
Properties of Carbon Nanotube Composite Conductors for High Performance Propulsion Motors
Self-propagating High Temperature Synthesis of Chevrel Phase Sulfides from Elemental Precursors
Sustainable Bio-Engineered Magnetoelectric Nanogenerator to Convert Ambient Stray Magnetic Noise to Electricity
Synthesis of Ce-Doped NaSICON Using Mechanical-Activation-Enhanced-Process
The Development of a Machine Learning Guided Process for the Additive Manufacturing of Thermoelectric Materials
Thermoelectric Properties of Additively Manufactured Fe3Al2Si3
Thermoplastic Elastomers for High Performance Barocaloric Cooling

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