Zobrazeno 1 - 10
of 235
pro vyhledávání: '"Hideto Imai"'
Autor:
Albert Mufundirwa, Yoshiharu Sakurai, Masazumi Arao, Masashi Matsumoto, Hideto Imai, Hiroyuki Iwamoto
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-9 (2024)
Abstract In the process of developing carbon-supported metal catalysts, determining the catalyst particle-size distribution is an essential step, because this parameter is directly related to the catalytic activities. The particle-size distribution i
Externí odkaz:
https://doaj.org/article/04f763eb7b6e41108234a166680726e7
Publikováno v:
Journal of Chemical Engineering of Japan, Vol 56, Iss 1 (2023)
An oxygen reduction reaction (ORR) activity of platinum (Pt)-based catalysts for polymer electrolyte fuel cells correlates with the adsorption characteristics of oxygen species during ORR on Pt surfaces and Pt oxidation (poisoning) by water. This stu
Externí odkaz:
https://doaj.org/article/df3c4da3343c464f8448dee7345f068c
Autor:
Daisuke Takimoto, Shino Toma, Yuya Suda, Tomoki Shirokura, Yuki Tokura, Katsutoshi Fukuda, Masashi Matsumoto, Hideto Imai, Wataru Sugimoto
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-9 (2023)
2D metals are promising electrocatalysts due to their potentially large surface area. Here we report double-layer Pt nanosheets derived from exfoliated PtOx nanosheets with higher electrochemically active surface area, oxygen reduction reaction activ
Externí odkaz:
https://doaj.org/article/afffbd3efe9c4025900fa7840afe7a8e
Autor:
Tetsuya Miyazawa, Naruki Tsuji, Daiki Fujioka, Takuma Kaneko, Yuki Mizuno, Yoshiharu Uchimoto, Hideto Imai, Yoshiharu Sakurai
Publikováno v:
Applied Sciences, Vol 13, Iss 19, p 10753 (2023)
Compton scattering imaging with intense, high-energy synchrotron X-rays allows us to visualize a light element substance in an operating electrochemical device. In this paper, we report the first experiment of Compton scattering imaging (CSI) on an o
Externí odkaz:
https://doaj.org/article/2d16ead2a62145bfa87179841086f78a
Autor:
Xiao Gao, Kentaro Yamamoto, Tomoyasu Hirai, Noboru Ohta, Tomoki Uchiyama, Toshiki Watanabe, Hideto Imai, Seiho Sugawara, Kazuhiko Shinohara, Yoshiharu Uchimoto
Publikováno v:
ACS Omega, Vol 6, Iss 22, Pp 14130-14137 (2021)
Externí odkaz:
https://doaj.org/article/0c016be3dcfe4dfa8456d8c056c8acc1
Autor:
Heidy Visbal, Takuya Omura, Kohji Nagashima, Takanori Itoh, Tsukuru Ohwaki, Hideto Imai, Toru Ishigaki, Ayaka Maeno, Katsuaki Suzuki, Hironori Kaji, Kazuyuki Hirao
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
Abstract We utilized nanoporous mayenite (12CaO·7Al2O3), a cost-effective material, in the hydride state (H−) to explore the possibility of its use for hydrogen storage and transportation. Hydrogen desorption occurs by a simple reaction of mayenit
Externí odkaz:
https://doaj.org/article/4c7ad8d673cf4bcda5c394e9f1a19926
Autor:
Chen LIU, Tomoki UCHIYAMA, Jyunichi ISHIHARA, Kentaro YAMAMOTO, Toshiki WATANABE, Hideto IMAI, Koichiro OSHIMA, Shigeki SAKURAI, Minoru INABA, Yoshiharu UCHIMOTO
Publikováno v:
Electrochemistry, Vol 89, Iss 1, Pp 31-35 (2021)
This study provides evidence of the enhancement of the oxygen reduction reaction (ORR) activity of Pt/C and Pd-core Pt-shell catalysts upon ionic liquid modification. Under high potential at 1.15 V (vs. reversible hydrogen electrode), the lower cover
Externí odkaz:
https://doaj.org/article/e770cd9af7e741df8d50a35c7f2f6dd5
Publikováno v:
Applied Sciences, Vol 11, Iss 9, p 3851 (2021)
Synchrotron-based Compton scattering imaging with intense high-energy X-rays allows the visualization of light element substances in an electrochemical device under an operando condition. In this study, we apply this imaging technique to a water-cont
Externí odkaz:
https://doaj.org/article/39750d814477450f941d31a5913372f2
Autor:
Akihiko Hirata, Shinji Kohara, Toshihiro Asada, Masazumi Arao, Chihiro Yogi, Hideto Imai, Yongwen Tan, Takeshi Fujita, Mingwei Chen
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-7 (2016)
Amorphous silicon monoxide is known to undergo disproportionation to silicon- and silicon dioxide-like regions, however direct observation of the atomic-scale heterogeneity is still missing. Here, the authors use angstrom-beam electron diffraction to
Externí odkaz:
https://doaj.org/article/57e460c287024c48a16460fe1ab93716
Autor:
Weijie Cao, Neha Thakur, Mukesh Kumar, Tomoki Uchiyama, Yunfei Gao, Satoshi Tominaka, Akihiko Machida, Toshiki Watanabe, Ryota Sato, Toshiharu Teranishi, Masashi Matsumoto, Hideto Imai, Yoshiharu Sakurai, Yoshiharu Uchimoto
Publikováno v:
Journal of Materials Chemistry A; 11/21/2024, Vol. 12 Issue 43, p29843-29853, 11p