Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Takeshi Shiomi"'
Publikováno v:
Electrochimica Acta. 117:367-378
Key challenges to the acceptance of Proton Exchange Membrane Fuel Cells (PEMFCs) for Fuel Cell Electric Vehicles (FCEVs) are the cost reduction and improvements in power density for compactness. High current density operation is one of the most effec
Autor:
Yuichiro Tabuchi, Daniel S. Hussey, Richard S. Fu, Takeshi Shiomi, Ugur Pasaogullari, David L. Jacobson
Publikováno v:
Journal of The Electrochemical Society. 159:F545-F553
Publikováno v:
ECS Transactions. 41:439-448
The relationship between micro structures of the GDL/MPL and mass transport property was investigated through coupled visualization and numerical analyses. The electron transport resistance of the GDL was high with the increase in compression pressur
Publikováno v:
Electrochimica Acta. 56:352-360
Key challenges to the acceptance of polymer electrolyte membrane fuel cells (PEMFCs) for automobiles are the cost reduction and improvement in its power density for compactness. In order to get the solution, the further improvement in a fuel cell per
Autor:
Takeshi Shiomi, David L. Jacobson, Ugur Pasaogullari, Daniel S. Hussey, Richard S. Fu, Yuichiro Tabuchi, Joshua S. Preston
Publikováno v:
ECS Transactions. 25:543-552
A fundamental experimental study of the reported water transport across the PEM under a temperature gradient is sought. We wish to experimentally verify the water transport phenomenon observed with neutron radiography and numerical modeling. The expe
Autor:
Hiroshi Kotaki, Akihide Shibata, Masayuki Nakano, Yoshiaki Kamigaki, Sugimoto Kazuo, Tetsu Negishi, Takeshi Shiomi, Noriaki Shinohara, Tetsuya Okumine, Fumiyoshi Yoshioka, Atsushi Toki
Publikováno v:
Japanese Journal of Applied Physics. 47:2684-2686
We have proposed a novel oxide–nitride–oxide (ONO)-sidewall 2-bit/cell nonvolatile memory and fabricated 70-nm-node nonvolatile memory devices. For low-pressure chemical-vapor-deposition (LPCVD)-SiN films, with increasing SiH4/NH3 mixture gas rat
Autor:
Takeshi Shiomi, Changqing Zhan, Watanabe Keiji, Paul J. Schuele, John W. Hartzell, Akihide Shibata, Kenji Komiya, Sato Takuya, Hiroshi Kotaki, Mark A. Crowder
Publikováno v:
2013 IEEE International Meeting for Future of Electron Devices, Kansai.
This paper demonstrates electrophoresis of silicon micro-rods by applying asymmetric AC bias to two electrodes capped with a thin dielectric film. The silicon micro-rods migrate bi-directionally when asymmetric AC bias is applied to the electrodes. T
Autor:
Yuichiro Tabuchi, Kazuhiko Shinohara, Takeshi Shiomi, Osamu Aoki, Yosuke Fukuyama, Norio Kubo
Publikováno v:
ASME/JSME 2011 8th Thermal Engineering Joint Conference.
Key challenges to the acceptance of Polymer Electrolyte Membrane Fuel Cells (PEMFCs) for automobiles are the cost reduction and its improvement in power density for compactness. In order to get the solutions for these issues, further improvement in t
Autor:
Yosuke Fukuyama, Takeshi Shiomi, Yuichiro Tabuchi, Norio Kubo, Shinichi Miyazaki, Hiromasa Sakai
Publikováno v:
ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology.
The influences of rib/channel geometries on the oxygen transport resistances in a polymer electrolyte fuel cell (PEFC) were investigated through experimental and numerical analyses. A limiting current method was used for evaluating the oxygen transpo
Autor:
Richard S. Fu, Ugur Pasaogullari, Kazuhiko Shinohara, Yuichiro Tabuchi, Daniel S. Hussey, Norio Kubo, Shinichi Miyazaki, David L. Jacobson, Takeshi Shiomi
Publikováno v:
ASME 2010 8th International Fuel Cell Science, Engineering and Technology Conference: Volume 1.
Improved oxygen diffusivity is essential for reducing mass transport losses in polymer electrolyte fuel cells (PEFCs). In this work, effective oxygen diffusivity in the presence of liquid water inside a gas diffusion layer (GDL) was investigated by m