Application of Screen-Printed Catalytic E1ectrodes to MEMS-Based Fuel Cells (特集:燃料電池を支えるMEMS/NEMS技術)
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概要
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This paper describes trials to realize a MEMS-based polymer electrolyte fuel cell (PEFC) with Pt-loaded carbon electrodes. We first developed screen-printing technology to pattern Pt-loaded carbon electrodes on MEMS-based PEFCs. Iso-propyl alcohol (IPA) and dibutyl phthalate (DBP) were compared as the dispersion media of Pt-loaded carbon powder. We found that DBP-based paste had better screen-printability, and revealed the reason by measuring the relationship between the shear rate and viscosity of the pastes. Next, we applied the Pt loaded carbon paste to two types of MEMS-based PEFCs. One is the PEFC which uses porous SiO2 as a gas diffusion layer. The Pt-loaded carbon paste was screen-printed on the Pt current collector which was sputter-deposited on the porous SiO2. The obtained power density was only 70 μW/cm2. The other type of MEMS-based PEFC is a thin film PEFC. A Pt-loaded carbon anode and cathode were screen-printed on a silicon/Pyrex glass support substrate. The obtained power density was 1.5 μW/cm2. The low performance may be due to the low performance of the prepared Pt-loaded carbon, and/or the poor adhesion of the anode with the current collector and the PEM. For the thin film PEFC, the high resistance of the Pt-loaded carbon electrodes can be another reason, because there are no current collector on the Pt-loaded carbon electrodes.
- 社団法人 電気学会の論文
著者
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TANAKA Shuji
Department of Nanomechanics, Graduate School of Engineering, Tohoku University
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ESASHI Masayoshi
New Industry Creation Hatchery Center, Tohoku University
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Kato Noriyuki
Department Of Radiology Mie University School Of Medicine
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Kato Noriyuki
Department Of Neurosurgery Mito Medical Center
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Min Kyong-Bok
Department of Nanomechanics, Tohoku University
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Oikawa Hiroyuki
Department of Nanomechanics, Tohoku University
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Esashi Masayoshi
New Industry Creation Hatchery Center Tohoku Univ.
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Tanaka Shuji
Department Of Nanomechanics Tohoku University
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Tanaka Shuji
Department Of Information Electronics Faculty Of Engineering Fukuoka Institute Of Technology
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Kato Noriyuki
Department Of Cardiovascular Surgery Social Insurance Chukyo Hospital
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Esashi Masayoshi
New Industry Creation Hatchery Center (niche) Tohoku University
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Tanaka Shuji
Department Of Electronics Faculty Of Engineering Fukuoka Institute Of Technology
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Tanaka Shuji
Department of Electronic Materials Engineering, Fukuoka Institute of Technology,
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Kato Noriyuki
Department of Nanomechanics, Tohoku University
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