Papers:
In-plane and through-plane electrochemical conductivity and fuel cell performance of thin-film YSZ electrolytes
Submicron electrolyte films are a key component of intermediate temperature solid oxide fuel cells. Several groups have reported size-dependent in-plane ionic conductivity in thin films of yttria-stabilized zirconia (YSZ) and gadolinia-doped ceria. Here we report [...]
Continuous Hydrothermal Flow Syntheses of Nanosize Materials Used In Solid Oxide Fuel Cells
Our research group has developed a novel nanomaterials synthesis method using a continuous hydrothermal flow synthesis (CHFS) reactor. In this reactor, nanosize particles are produced through co-precipitation in supercritical water. Sub 50 nm sized particles [...]
Effects of Spin Coating Catalysts on Micro-Fuel Cells Efficiency
Using spin coating as the catalyst application technique in order to receive an even distribution on the porous silicon PEM. With even distribution, resistivity is more consistent, which produces a better power output from the [...]
Modeling the Temperature Field in Reforming Anodes of a Button-Shaped SOFC
A new model for the determination of the temperature field in porous reforming anodes of SOFCs is presented. The model is implemented in a commercial CFD software package. Heat transfer, fluid flow and electrochemical reactions [...]
Directed self-organization and Molecular wiring of catalytic nanoparticles for fuel cells
The usefulness of nanosized metallic particles in new generation devices and materials has prompted researchers to synthesize particles on various novel supports. The tunability in size and distribution of nanoparticles via bottom up tools opens [...]
Novel Composite Membranes Containing Functionalised Silsesquioxanes and Ionic Liquids for High Temperature Fuel Cell Applications
Today most of our energy supply comes from non-renewable energy resources such as fossil fuels, but there is an increasing drive towards the use of more environmentally friendly, renewable energy source. Of these alternative energies, [...]
Nanomaterials for Desulfurization & Hydrogen Generation
Energy R&D is being driven by concerns about global warming and air pollution largely attributed to pollutants from the burning of fossil fuels. While long-term energy strategies may call for the complete replacement of petroleum-based [...]
Bifurcation Behavior of a Novel Auto-thermal Circulating Fluidized Bed (CFB) Membrane Reformer
Static Bifurcation (SB), which mostly exhibits itself as multiple steady states, is characteristic of a novel auto-thermal Circulating Fluidized Bed Membrane Steam Reformer (CFB_MSR) for hydrocarbons. The present paper focuses on the practical implications of [...]
Development of Efficient, Compact and Environmentally Friendly Hydrocarbon Reformer for the Production of Pure Hydrogen
Hydrogen represents one of the most promising clean fuels for the future. Reforming of hydrocarbons (e.g. natural gas, gasoline, diesel, etc.) represents the most promising route for the production of hydrogen because it yields hydrogen [...]
New Catalytic system for Producing Pure Hydrogen -Water-gas-shift Reaction of Supported Copper Catalysts-
The catalytic activity of water-gas-shift (WGS) reaction was investigated for alumina-supported copper and copper-iron oxides catalysts calcined at different temperatures. Alumina-supported copper catalysts calcined at 1073 K, followed by the treatment in H2 at 523 [...]
Computer Simulation of Hydrogen Storage Materials
We develope a new software to design the hydrogen storage materials. The energetic and dynamical behavior of the materials are studied. As an example, we illustrate the amorphization process of intermetallics by hydrogenation, i.e. hydrogen [...]
Zirconia Aerogel-Polyxometalate Composites Synthesis with Applications in Solid Oxide/Acid Fuell Cells
Nicoara A., Cosoveanu V., Ladiu I., Baia L., Baia M., Baia L., Baia M., Muresan L., Stamatin I., Danciu V., Babes-Bolyai University cluj-Napoca, RO
Zirconia is based material with various applications in catalysis, oxygen sensors, SOFC and electrochemical pumps. Zirconia aerogels dopped or functionalized with solid heteropolyacids extend applications to high performances materials with improved features such as: high [...]
Study on the Cathode Materials for Achieving IT-SOFC with Proton Conductor
Proton conductor is the potential candidate as an electrolyte for an intermediate temperature-solid oxide fuel cell (IT-SOFC). However, a major issue with the reduced operating temperature is the decrease in the catalytic activity of the [...]
Structural Stability of Hydrogen Storage Materials
Elastic instability by hydrogenation and hydrogen diffusion are studied by molecular dynamics method. The bulk modulus instability causes the anorphization by hydrogenation. The atomic relaxation reduces the pressure fluctuation terms i n the elastic constant, [...]
Carbon Aerogel -Supported Pt with Applications in Fuel-Cells
Cotet L.C., Andronie A., Stamatin I., Stamatin I.D., Stamatin I., Stamatin I.D., Cosoveanu V., Danciu V., Babes-Bolyai University, RO
Carbon–supported Pt materials still remain as reference electrocatalysts for the reactions in fuel cells [1]. Related to cost–performances carbon aerogel-supported Pt joins the catalytic properties of the Pt with attractive structural properties of the aerogels, [...]
Generating Hydrogen on Demand by Splitting Water with Al Rich Alloys
Our group has been pioneering the production of on-demand hydrogen using aluminum-gallium alloys to split water into hydrogen, heat, and alumina. Recently, we have found that we can split water on demand using solid alloys [...]
Protective Sensor Coatings for High-Throughput Screening of Hydrogen-Producing Microbes
Microbe-based hydrogen production is a potentially cost-effective, non-polluting approach to the production of hydrogen. Research efforts are underway to identify, isolate, and enhance microbial strains which facilitate direct sunlight-to-hydrogen conversion. These efforts are hampered by [...]
An Assessment of Renewable Hydrogen Costs, Infrastucture, and Resource Constraints
This study uses a hydrogen logistics model to determine the most economic renewable resources and infrastructure to supply hydrogen to demand centers across the U.S. The model minimizes the projected average price for renewable-hydrogen using [...]
Domestic hydrogen production by an integrated biomass gasification/sponge iron process
The share of hydrogen in the energy market is increasing with the implementation of fuel cell systems and the growing demand for zero-emission fuels. One major challenge is a distribution system for hydrogen. This drawback [...]
Renewable Hydrogen Production Around the Globe
Survey of demonstration projects involving renewably produced hydrogen around the world.
Production of Renewable Solar Hydrogen using Semiconductor Metal oxides by Water Photoelectrolysis
Semiconductor metal oxide catalysts are exploited as photoelectro catalyst to generate hydrogen by water photoelectrolysis. A special design is carried to to get high volume of hydrogen for longer time.
Deposition and Characterization of Platinum Nanoparticles on Highly Orientated Pyrolytic Graphite
Elizondo-Villarreal N., Novar C., Zhou J.P., Alvarez Contreras L., Tel Vered R., Universidad Autonoma de Nuevo Leon, MX
Platinum is considered one of the best electrocatalyst for low temperature reactions in a H2/O2 fuel cell. Metallic nanoparticles are of great interest because of the modification of properties observed due to size effects, modifying [...]
Micropatterning Layers by Flame Aerosol Deposition – Annealing
The development of scalable methods, which effectively bind nanoparticles to surfaces and provide precise patterns, is a key step towards the commercial exploitation of the distinctive properties of nanoparticles. In this context, the direct deposition [...]
Journal: TechConnect Briefs
Volume: Technical Proceedings of the 2008 Clean Technology Conference and Trade Show
Published: June 1, 2008
Industry sector: Energy & Sustainability
Topic: Fuel cells & Hydrogen
ISBN: 1-4200-8502-0