Search results

Now showing 1 - 10 of 12
  • Publication
    EWGP--a work in progress....
    (2007-03-09) Fischer, John E
    The need for energy affects almost every aspect of modern society. Indeed, the advent of coal as a widely-used energy source is sometimes viewed as the spark that started the Industrial Revolution. However, we are about to enter a new era due to increased competition from developing nations for the world's dwindling energy supplies and to the growing recognition that our current energy usage is unsustainable and is affecting the world's climate. It is apparent that research on energy-related issues will become increasingly important in the coming years.
  • Publication
    Use of High Strength Steel for Hydrogen Containment
    (2007-03-09) Liu, X. Y.; Kameda, Jun A; McMahon, C. J.
    The research involves experiments on model lab heats of an ultra-high-strength steel (high C, low Ni ) and a high-toughness, high-strength steel (high Ni, low C) to determine the limits of toughness as a function of yield strength, grain-boundary purity, and hydrogen fugacity. In addition, the existence and mechanism of brittle intergranular cracking in ideally pure steels is being investigated.
  • Publication
    From Fundamental Understanding to Predicting New Nanomaterials for High-Capacity Hydrogen Storage
    (2007-03-09) Zhou, Wei; Simmons, Jason; Fischer, John E; Yildirim, Taner
    • H2-Storage Materials: Current Impasse • Promising Hybrid Materials • Direct Adsorption Measurements • Neutron Scattering Capabilities • First Principles Calculations • Use a combination of experimental and theoretical studies to understand the detailed guest-host interactions in novel storage materials • Armed with this, develop advanced guest-host materials that can meet the DOE hydrogen storage challenge
  • Publication
    Block Copolymer Nano-Structured Materials
    (2007-03-09) Fryd, Mychael; Wayland, Bradford B
  • Publication
    Fabrication of Photonic Crystals with high refractive index
    (2007-03-09) Xu, Yongan; Yang, Shu; Moon, Jun Hyuk; Johnson, Alan T; Dan, Yaping; Perry, Joseph W; Adibi, Ali; Hotchkiss, Peter; Marder, Seth
    • Complete photonic bandgap • High contrast of refractive index (RI) • Polymer material with a low RI • Inorganic material with a higher RI, such as silicon, titania. • Fabrication of diamond-like PCs by MBIL, • Fabrication of high RI inorganic PCs via double templating, • Core-shell morphology of replica • Pinch-off problem • Development of combined level-surface to address pinch-off problem • Electrodeposition of titania 3D structure • Electrophoretic deposition of surface charged nanoparticles
  • Publication
    Electrodes for Solid Oxide Electrolysis (SOE) and Natural-Gas Assisted Steam Electrolysis (NGASE)
    (2007-05-18) Gorte, Raymond J; Vohs, John M; Wang, Wei; Gross, Michael D; Bidrawn, Fred; Glass, Robert S; Woo, Leta Y; Martin, L. P
  • Publication
    Carbide-Derived Carbons with Tunable Porosity Optimized for Hydrogen Storage
    (2007-05-16) Fischer, John E; Gogotsi, Yury; Yildirim, Taner
    Relevance: Improvements in gravimetric and volumetric capacity were realized by processes which increase pore volume, heat of adsorption and powder density. Volumetric capacity was more than doubled by rolling peels with PTFE binder and pellet pressing. Even larger gains may be achieved with bulk precursors. Approach: A suite of post-processing strategies were developed and optimized for specific precursors. Technical Accomplishments and Progress: Excess H2 adsorption over 4.3 wt.% and 0.034 kg/L was demonstrated in as-produced CDC having a moderate SSA and pore volume @ (77K, 55 atm). Max heat of H2 adsorption up to 11 kJ/mol (with average values ~ 8 kJ/mol) demonstrated. Proposed Future Research: Further science-based modification of CDC porosity, microstructure and chemistry for improved H2uptake.
  • Publication
    The Advanced Energy Initiative: Challenges, Progress, and Opportunities
    (2007-03-09) Milliken, JoAnn; Yuzugullu, Elvin; Stanford, Joseph
    This talk will address hybrid vehicles and battery technology, ethanol as a fuel, and hydrogen fuel cells, the ability of these technologies to reduce oil dependence and the challenges for each approach, and the progress made. Stationary power generation, solar buildings, and portable power fuel cells will also be discussed. The presentation will be at a programmatic level and will touch on the applied research and technology development opportunities under the Advanced Energy Initiative.
  • Publication
    The Global Energy Challenge
    (2007-03-09) Crabtree, George
    The expected doubling of global energy demand by 2050 and its impact on supply, security, environment and climate challenge our traditional patterns of energy production, distribution and use. New routes are needed for the efficient conversion of energy from chemical fuel, sunlight, and heat to electricity or hydrogen as an energy carrier and finally to end uses like transportation, lighting, communication and information processing. Opportunities for efficient new energy conversion routes based on nanoscale materials will be presented, with emphasis on the sustainable energy technologies they enable.
  • Publication
    Atomistic Studies of Deformation and Fracture in Materials with Mixed Metallic and Covalent Bonding
    (2007-03-09) Vitek, Vaclav; Cawkwell, Marc J; Gröger, Roman
    Materials with high melting temperatures (over 2000°C) tend to be brittle at ambient and even relatively high temperatures. High melting temperatures originate in strong interatomic bonding arising from formation of dd or dp bonds that also affect and/or control crystal structures and properties of extended defects, such as dislocations, grain boundaries. These, in turn, govern plastic deformation and fracture. General goal: Establish relationship between electronic structure and mechanical behavior