Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Fumiya Shiraki"'
Autor:
Hisaaki Kudo, Taeko Yoshikawa, Fumiya Shiraki, Tomohiro Takahashi, Tatsuya Urakawa, Takeshi Murakami, Toshitaka Oka, Yuji Oshima, Hajime Fujita, Masakazu Washio, Akihiro Oshima, Naoyuki Fukutake, Yoshimasa Hama, Yuya Takasawa, Tomoko Gowa Oyama
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 269:1777-1781
The graded energy deposition of heavy ion beam irradiation to polymeric materials was utilized to synthesize a novel proton exchange membrane (PEM) with the graded density of sulfonic acid groups toward the thickness direction. Stacked Poly(tetrafluo
Autor:
Yuji Oshima, Akihiro Oshima, Taeko Yoshikawa, Fumiya Shiraki, T. Tatsumi, Hajime Fujita, Masakazu Washio, Takashi Sasaki
Publikováno v:
Radiation Physics and Chemistry. 80:201-206
Novel proton exchange membranes (PEMs) with functionally gradient ionic sites were fabricated utilizing low energy electron beam (EB) irradiations. The low energy electron beam irradiation to polymer membranes possessed the property of gradient energ
Autor:
Fumiya Shiraki, Kazuki Fujii, Hajime Fujita, Naohiro Mitani, Yuji Oshima, Masakazu Washio, Akihiro Oshima, Yukiko Sato
Publikováno v:
Radiation Physics and Chemistry. 80:164-168
The performance of a polymer electrolyte fuel cell (PEFC) is affected by the interfacial property between the proton exchange membrane (PEM) and the electrodes. Thus, development of well-laminated membrane electrode assemblies (MEAs) has been carried
Publikováno v:
Radiation Physics and Chemistry. 80:196-200
An ultra low energy electron beam (UL-EB) was used to irradiate various polymeric materials such as fluorinated polymers and a polyimide under an oxygen-free atmosphere. After the irradiation of the polyimide, the change in the thermal properties was
Publikováno v:
Journal of Photopolymer Science and Technology. 23:387-392
The revolutionary functionally gradient proton exchange membranes were fabricated by EB irradiation with heterogeneous energy deposition. These heterogeneous energy deposition profiles (Depth-Dose profiles) were simulated by Monte Carlo simulation co
Publikováno v:
Journal of Photopolymer Science and Technology. 22:335-340
Perfluoro-sulfonic acid (PFSA) membranes were exposed to UV for the improvement of surface adhesion property. The photochemical effect of PFSA was evaluated by UV-visible spectroscopy. The changes of the chemical structure of UV-exposed PFSA were stu