Miniature fuel cell with monolithically fabricated Si electrodes _ Alloy catalyst formation _

13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Ogura, Daiki^1 ; Suzuki, Takahiro^1 ; Katayama, Noboru^2 ; Dowaki, Kiyoshi^3 ; Hayase, Masanori^1

Department of Mechanical Engineering, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan^1

Department of Electrical Engineering, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan^2

Department of Industrial Administration, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan^3

关键词: Alloy catalyst;    Formation process;    Galvanic replacements;    Miniature fuel cells;    Pd Pt catalyst;    Process steps;    Prototype cells;    Underpotential deposition;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/476/1/012066/pdf
DOI  :  10.1088/1742-6596/476/1/012066

来源: IOP

【 摘 要 】

A novel Pd-Pt catalyst formation process was proposed for reduction of Pt usage. In our miniature fuel cells, porous Pt was used as the catalyst, and the Pt usage was quite high. To reduce the Pt usage, we have attempted to deposit Pt on porous Pd by galvanic replacement, and relatively large output was demonstrated. In this study, in order to reduce more Pt usage and explore the alloy catalyst formation process, atomic layer deposition by UPD-SLRR (Under Potential Deposition-Surface Limited Redox Replacement) was applied to the Pd-Pt catalyst formation. The new process was verified at each process steps by EDS elemental analysis, and the expected spectra were obtained. Prototype cells were constructed by the new process, and cell output was raised to 420mW/cm2by the Pd-Pt catalyst from 125mW/cm2with Pd catalyst.