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739 results on '"Kato, Satoru"'

7. Liquid Water Visualization in the Pt‐Loading Cathode Catalyst Layers of Polymer Electrolyte Fuel Cells Using Operando Synchrotron X‐ray Radiography.

Author

Yoshimune, Wataru, Kato, Akihiko, Hayakawa, Tetsuichiro, Yamaguchi, Satoshi, and Kato, Satoru

Subjects
FUEL cell vehicles, POLYMER solutions, WATER-gas, WATER management, WATER storage, PROTON exchange membrane fuel cells
Abstract

Water management is important for addressing the challenges posed by next‐generation fuel cell electric vehicles. Although X‐ray imaging techniques are useful for probing the mechanism of water transport in the gas diffusion layer of polymer electrolyte fuel cells, they cannot be easily applied to the Pt‐loading catalyst layer because of its low X‐ray transmittance due to the high absorption coefficient of Pt. Herein, a method to realize the high‐resolution X‐ray imaging of a 30 μm‐thick cathode catalyst layer in polymer electrolyte fuel cells using synchrotron X‐ray radiography is proposed, thus bridging the above gap. The results of operando synchrotron X‐ray radiography measurements reveal that water accumulation in the cathode catalyst layer depends on the cell temperature, feed gas humidity, and cell voltage, while time‐slice analysis shows that the water accumulation rate in the cathode catalyst layer immediately after the power generation is faster than that in the cathode gas diffusion layer. The proposed imaging method can be used to evaluate the water storage capacity of the catalyst layer and thus deepen the understanding of flooding phenomena and cold‐start behavior at subzero temperatures. [ABSTRACT FROM AUTHOR]

Published
2024
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13. Alternative Splicing for Activation of Coagulation Factor XIII-A in the Fish Retina After Optic Nerve Injury

Author

Sugitani, Kayo, Koriyama, Yoshiki, Ogai, Kazuhiro, Furukawa, Ayako, Kato, Satoru, COHEN, IRUN R., Series Editor, LAJTHA, ABEL, Series Editor, LAMBRIS, JOHN D., Series Editor, PAOLETTI, RODOLFO, Series Editor, REZAEI, NIMA, Series Editor, Ash, John D., editor, Anderson, Robert E., editor, LaVail, Matthew M., editor, Bowes Rickman, Catherine, editor, Hollyfield, Joe G., editor, and Grimm, Christian, editor

Published
2018
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29. Regeneration-Associated Genes on Optic Nerve Regeneration in Fish Retina

Author

Ogai, Kazuhiro, Nishitani, Maki, Kuwana, Ayaka, Mawatari, Kazuhiro, Koriyama, Yoshiki, Sugitani, Kayo, Nakashima, Hiroshi, Kato, Satoru, Lambris, John D., Series editor, Ash, John D., editor, Grimm, Christian, editor, Hollyfield, Joe G., editor, Anderson, Robert E., editor, LaVail, Matthew M., editor, and Bowes Rickman, Catherine, editor

Published
2014
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44. A Study on Clustering Method by Self-Organizing Map and Information Criteria

Author

Kato, Satoru, Horiuchi, Tadashi, Itoh, Yoshio, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Leung, Chi Sing, editor, Lee, Minho, editor, and Chan, Jonathan H., editor

Published
2009
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