T
Tetsuo Sakai
Researcher at National Institute of Advanced Industrial Science and Technology
Publications - 418
Citations - 5101
Tetsuo Sakai is an academic researcher from National Institute of Advanced Industrial Science and Technology. The author has contributed to research in topics: Electrode & Battery (electricity). The author has an hindex of 31, co-authored 418 publications receiving 5006 citations. Previous affiliations of Tetsuo Sakai include Toray Industries & Stockholm University.
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Electrochemical impedance and deterioration behavior of metal hydride electrodes
Nobuhiro Kuriyama,Tetsuo Sakai,Hiroshi Miyamura,I. Uehara,Hiroshi Ishikawa,Toshikatsu Iwasaki +5 more
TL;DR: In this paper, Electrochemical impedance spectroscopy (EIS) was applied to metal hydride electrodes to investigate the deterioration of metal hydide electrodes using a mischmetal-based alloy, MmNi 3.5 Co 0.7 Al 0.8, using EIS.
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Some factors affecting the cycle lives of LaNi5-based alloy electrodes of hydrogen batteries
Tetsuo Sakai,Keisuke Oguro,Hiroshi Miyamura,Nobuhiro Kuriyama,Akihiko Kato,Hiroshi Ishikawa,Chiaki Iwakura +6 more
TL;DR: In this article, the effect of substituting elements to improve the cycle life increased in the order: M ≡ Mn, Ni, Cu, Cr, AlandCo, and the lower the capacity, the smaller the volume expansion ratio, the slower the pulverizing rate, and lower the Vickers hardness were.
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Rechargeable hydrogen batteries using rare-earth-based hydrogen storage alloys
TL;DR: In this article, a columnar structure was formed so that the c -axis of the hexagonal structure was oriented parallel to the cooling plane, and the cylindrical sealed cell also showed a very long cycle life (a capacity decay of 6% after 2000 cycles).
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Metal Hydride Anodes for Nickel‐Hydrogen Secondary Battery
TL;DR: In this paper, the relationship between chemical compositions and anode properties was examined in terms of surface oxide film which worked as a barrier for preventing the diffusion of hydrogen and for protecting the alloy from further corrosion.
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Structural investigation and hydrogen capacity of YMg2Ni9 and (Y0.5Ca0.5)(MgCa)Ni9: new phases in the AB2C9 system isostructural with LaMg2Ni9
K. Kadir,Tetsuo Sakai,I. Uehara +2 more
TL;DR: In this paper, two ternary magnesium-based alloys, YMg2Ni9 and (Y0.5Ca 0.5)(MgCa)Ni9 have been synthesized and their crystal structures were determined by Guinier-Hagg X-ray powder diffraction.