Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Yuzo Nagumo"'
Autor:
Masahiro Watanabe, Takeo Suga, Kazuhiro Takanohashi, Toshihide Ueda, Makoto Uchida, Junji Inukai, Hiroyuki Nishide, Yuzo Nagumo
Publikováno v:
Journal of Power Sources. 343:135-141
Understanding the reaction distributions inside a polymer electrolyte fuel cell (PEFC) is essential for the higher performance and durability. We have developed a new see-through cell and visualized the distributions of oxygen partial pressure and cu
Autor:
Junji Inukai, Makoto Uchida, Takeo Suga, Yuzo Nagumo, Masahiro Watanabe, Hiroyuki Nishide, Katsuya Nagase
Publikováno v:
Journal of Power Sources. 273:873-877
Visualization inside polymer electrolyte fuel cells (PEFCs) for elucidating the reaction distributions is expected to improve the performance, durability, and stability. An oxygen-sensitive film of a luminescent porphyrin was used to visualize the ox
Autor:
Yuzo Nagumo, Wihatmoko Waskitoaji, Yuta Ishigami, Masakazu Yoneda, Hiroyuki Nishide, Takeo Suga, Junji Inukai, Makoto Uchida, Kenji Takada, Masahiro Watanabe, Tsuyoshi Hyakutake
Publikováno v:
Journal of Power Sources. 269:556-564
Visualization of the oxygen partial pressures was carried out at the surface of a gas diffusion layer (GDL) for the first time together with the upper part of the gas-flow channel of the cathode of a running polymer electrolyte fuel cell (PEFC) using
Autor:
Hiroshi Takano, Yuta Ishigami, Masahiro Watanabe, Yuzo Nagumo, Hiroyuki Nishide, Kenji Takada, Junji Inukai
Publikováno v:
Journal of Power Sources. 196:2635-2639
Visualization inside polymer electrolyte fuel cells (PEFCs) is important for elucidating reaction distributions to improve the performance and durability of the cells. An O2-sensitive porphyrin luminescent dye film was used to visualize oxygen partia
Autor:
Masahiro Watanabe, Tsuyoshi Hyakutake, Yuta Ishigami, Junji Inukai, Hiroyuki Nishide, Yuzo Nagumo, Makoto Uchida, Kenji Takada, Hiroshi Yano
Publikováno v:
Journal of Power Sources. 196:3003-3008
During start-up/shut-down processes of a polymer electrolyte fuel cell, platinum particles are lost from the catalyst layer at the cathode due to corrosion of the carbon supports. We simulated the start-up/shut-down cycle by exchanging gases at the a
Autor:
Kenji Takada, Yuzo Nagumo, Satoki Hirakata, Masahiro Watanabe, Makoto Uchida, Junji Inukai, Hiroyuki Nishide, Yuta Ishigami
Publikováno v:
Electrochemistry. 79:388-391
Gas diffusion layer (GDL) is an important component for the performance of polymer electrolyte fuel cells controlling the gas flow and the water transport. In this study, the real-time formation process of water droplets on two GDLs with different po
Publikováno v:
Hyomen Kagaku. 22:601-606
Autor:
S. Yamagami, H. Daido, H. Nagatomo, M. Suzuki, Y. Murakami, Li Woo Choi, H. Fiedorowicz, A. Bartnik, R. Rakowski, W. Yu, A. Sasaki, T. Utsumi, K. Moribayashi, T. Kawachi, M. Kado, N. Hasegawa, Y. Ueshima, T. Tajima, Yuzo Nagumo, Shigeki Hayashi, Takashi Yagi, Takeshi Matsumura, Susumu Yamazaki, Isao Kojima, Kazumasa Honda, A. Shimoura, T. Mochizuki, S. Miyamoto, S. Amano, Denis Joyeux, Daniel Phalippou, Gerard Jamelot, E. Takahashi, I. Okuda, Y. Matsumoto, I. Matsushima, S. Kato, K. Kuwahara, Y. Owadano, M. Iwasaki, T. Jitsuno, S. Motokoshi, N. Nishi, M. Nakatsuka, Koichi Mori, Kimiya Komurasaki, Yoshihiro Arakaw, M. Ishimoto, S. Uchida, K. Imasaki, X. Zhou, S. Sakabe, N. Kawashima, Shinichirou OKIHARA, Fuminobu SATOA, Takehiro SHIMADA, Kouji TAKAHASHI, Yusuke SAKABE, Takayoshi NORIMA'TUA, Yasukazu IZAWAA, Toshiyuki IIDA, Kazuhisa NAKAJIMA, Shuhei KANAZAWA, Masaki KANDO, Shuji KONDO, Hideyuki KOTAKI, Hideki DEWA, Tomonao HOSOKAI, M. YODA, Y. BABA, N. MUKAI, Y. SANO, T. OGlSU, M. Yamaura, S. Ihara, S. Satoh, C. Yamabe, S. Nozawa, Y. Shimada, A. Ogata, T. Yamanaka, C. Yamanaka, Y. Ishikubo, K. Kawabata
Publikováno v:
The Review of Laser Engineering. 28:69-71,74
Autor:
Junji Inukai, Masahiro Watanabe, Hiroshi Takano, Makoto Aoki, Kenji Takada, Hiroyuki Nishide, Kenji Miyatake, Yuzo Nagumo, Masayuki Watanabe, Tsuyoshi Hyakutake
Publikováno v:
Angewandte Chemie (International ed. in English). 47(15)
Fuel cells are devices that produce electric power by means of the chemical reaction of oxygen and fuels more efficiently than current technologies, and they are expected to become a cleaner source of energy. Despite considerable recent advances, esp
Publikováno v:
Applied optics. 37(21)
We report on a widely tunable, diode-pumped, continuous-wave, single-frequency Cr(3+):LiSrAlF(6) laser with a novel double-ring cavity configuration. The optical diode and the tuning element were located in the ring subcavity to decrease their insert