Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Hideki Koyanaka"'
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 322:1889-1895
This study reports the separation of tritium from tritiated heavy water at room temperature using a membrane containing deuterated manganese dioxide. A continuous decrease in the tritium concentration in tritiated heavy water was observed when using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::762af3ce7e94b73329e7f3405adcd4ff
https://doi.org/10.1007/s10967-019-06905-y
https://doi.org/10.1007/s10967-019-06905-y
Autor:
Hideki Koyanaka, Satoshi Fukutani
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 318:175-182
This study shows a membrane containing a protonated manganese dioxide powder that is able to continually extract tritium from light water at room temperature. The method of using membrane-supplied protons through a proton conductive polymer film from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc1d437428b9e6383e2a9ca9df538c4f
https://doi.org/10.1007/s10967-018-6022-y
https://doi.org/10.1007/s10967-018-6022-y
Publikováno v:
ECS Transactions. 58:15-18
Introduction Hydrogen (H2) promises to be a major clean fuel in the near future. Thus, many kinds of H2 sensors have been studying up to now. From the viewpoint of safe utilization, H2 sensors that can operate around room temperature are preferable [
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8fa55ed024d2cdb30deda82b7929a8f
https://doi.org/10.1149/05825.0015ecst
https://doi.org/10.1149/05825.0015ecst
Publikováno v:
Sensors and Actuators B: Chemical. 183:641-647
Sensoring properties of a hydrogen sensor that used electrolytes made of different crystal type manganese dioxides were compared. An electrolyte made of a manganese dioxide, which has a high purity of ramsdellite-type crystal structure, provided the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::420ee077d1ded96b3142de723db246ab
https://doi.org/10.1016/j.snb.2013.03.074
https://doi.org/10.1016/j.snb.2013.03.074
Publikováno v:
KAGAKU KOGAKU RONBUNSHU. 39:53-59
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fd6637213ec6a56e2e06d792809ec8c
https://doi.org/10.1252/kakoronbunshu.39.53
https://doi.org/10.1252/kakoronbunshu.39.53
Autor:
Ken Takeuchi, Hideki Koyanaka, Yomei Tokuda, Toshinobu Yoko, Alexander I. Kolesnikov, Yoshikatsu Ueda
Publikováno v:
Solid State Ionics. 225:282-285
A high-purity, ramsdellite-crystal type manganese dioxide (Koyanaka et al., 2005 [1]; Iikubo et al., 2010 [2]) was used for an electrolyte in a hydrogen gas sensor (Ueda et al., 2011 [3]). In this report, the electrochemical properties of the hydroge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6550dfd44cbb0a45647ffed9cf0cd740
https://doi.org/10.1016/j.ssi.2012.04.006
https://doi.org/10.1016/j.ssi.2012.04.006
Autor:
Satoshi Nishioka, Hideki Koyanaka, Yomei Tokuda, Toshinobu Yoko, Hirokazu Masai, Yoshikatsu Ueda, Masahide Takahashi
Publikováno v:
Solid State Ionics. 225:232-235
A novel organic–inorganic hybrid titanophosphite membrane that exhibits proton conductivity at 100–150 °C was successfully prepared. Graded monomer conversion was achieved in the membrane by ultraviolet light (UV) absorption during polymerizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22118ee789e30d0a3d19cdd2eafb620e
https://doi.org/10.1016/j.ssi.2012.01.040
https://doi.org/10.1016/j.ssi.2012.01.040
Autor:
Satoshi Nishioka, Toshinobu Yoko, Yomei Tokuda, Hirokazu Masai, Yoshikatsu Ueda, Masahide Takahashi, Hideki Koyanaka
Publikováno v:
Solid State Ionics. 206:22-27
Further advances in polymer electrolyte fuel cells require membranes that can operate at intermediate temperatures between 100 and 150 °C. In this study, we report a unique organic–inorganic hybrid titanophosphite membrane possessing high proton c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fedd45e96b8f16ef791a2232685ac28b
http://hdl.handle.net/2433/152382
http://hdl.handle.net/2433/152382
Publikováno v:
Sensors and Actuators B: Chemical. 155(2):893-896
Hydrogen gas promises to be a major clean fuel in the near future. Thus, sensors that can measure the concentrations of hydrogen gas over a wide dynamic range (e.g., 1–99.9%) are in demand for the production, storage, and utilization of hydrogen ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::559ee7dccaba05120999995f99f69e33
http://hdl.handle.net/2433/142591
http://hdl.handle.net/2433/142591
Autor:
Hideki Koyanaka, Koichi Ui, Kenjiro Fujimoto, Ryosuke Tai, Ken Takeuchi, Shigeru Ito, Nobuyuki Koura
Publikováno v:
ECS Transactions. 35(1):2755-2759
We have developed intermediate-temperature solid oxide fuel cell (SOFC) with a proton conducting oxide BaCe0.8Y0.2O3-δ(BCY20) as the electrolyte for direct utilization of dimethylether (DME) fuel. We tried to improve the cell performance of the SOFC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ba8355fe11d14a96f1187f507b7407a
https://iwate-u.repo.nii.ac.jp/records/10331
https://iwate-u.repo.nii.ac.jp/records/10331