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Iron oxide is one of the most promising materials as an electrode of lithium-ion batteries due to its low toxicity and low cost. In this study, composites of nano-sized γ-ferric oxide (γ-Fe2O3) and carbon material is synthesized by aqueous solution method, which is generally conducted at low cost. Acetylene black (AB) or ketjen black (KB) is adopted for the carbon component in the composite. These...
TiO2-based nanomaterials (including layered titanates, H2TinO2n+1, which transform into TiO2 at high temperatures) have attracted much attention because of their fascinating characteristics relating to renewable energy and environmental applications. Recently, one-dimensional (1D) TiO2 nanomaterials, such as nanotube, nanowire, nanorod, nanofiber, have been investigated for electrode materials in...
We present a systematic study of material processing and evaluation for TiO2 using microwave/far/mid-infrared light techniques. A mid-infrared free electron laser (MIR-FEL: 5–20 μm) facility (KU-FEL: Kyoto University Free Electron Laser) has been constructed in Institute of Advanced Energy Kyoto University, and first laser saturation at 13.2 μm was achieved in May 2008. Currently, we have started...
Development of an artificial photosynthesis complex composed of an assembly of functional biomolecules is desired for the establishment of the renewable energy system in the age of global warming. As the basic methodology for constructing such functional biomolecules, we have developed a stepwise functionalization strategy for RNA and peptide complex (ribonucleopeptide: RNP). Our strategy based on...
In this study, direct numerical simulation (DNS) of heat transfer in a turbulent channel flow with Giesekus model was conducted at turbulent Reynolds number is 150, Prandtl number is 5 and Weissenberg number based on the friction velocity is 30. Temperature field was treated as a passive scalar and constant temperature difference condition was imposed at the wall. As the results, fundamental DNS database...
At the Kyoto University Research Reactor Institute, the first injection of the spallation neutrons generated by the high-energy proton beams into a reactor core was accomplished on 4 March 2009. Using three detectors which located at near active core regions, the prompt and delayed neutron behaviors by proton injection were experimentally observed and the neutron beam characteristics at the beam duct...
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