Design of multi-layer sputter-deposited anode to reduce catalyst loading for liquid DMFC

• Autorzy: Saito H. , Nakashima T. , Nakase K. , Sudoh M.
• Konferencja: 8th International Conference on Global Research and Education – Inter-Academia 2009
• Języki publikacji: EN

Abstrakty

EN

Superior catalyst utilization of direct methanol fuel cells (DMFCs) may be obtained by localized catalyst loading on reaction sites. The objective of this work is to improve the catalyst utilization by multi-layer structure and reduction of loading catalyst. Multi-layer anode consisted of sputter-deposited Pt-Ru catalyst layer and the support layer of Nafion-carbon-Isopropanol ink (NCI). Single layer anode consisted of sputter-deposited Pt-Ru catalyst layer and the layer of carbon-glycerin ink (CG). Multi-layer (1~4 layers) and single-layer (0.04, 0.10 and 0.24 mg cm-2) were evaluated by using electrochemical measurement and SEM images. Three-layer anode provided 50.9 W g-1, 3.4 times as mass activity of conventional paste method anode. Methanol residues stripping voltammetry revealed that electrochemical surface area (ECSA) was increased with the number of layers. Additionally, single-layer anode (0.04 mg cm-2) provided over 150 W g-1. These results suggested that reduction of loading catalyst per unit layer and multilayer structure enhanced catalyst utilization.

Słowa kluczowe

EN

liquid DMFC; low catalyst loading; sputter-deposition; multi-layer anode

• Wydawca: Łukasiewicz Industrial Research Institute for Automation and Measurements PIAP
• Czasopismo: Journal of Automation Mobile Robotics and Intelligent Systems
• Rocznik: 2009
• Tom: Vol. 3, No. 4
• Strony: 175--178
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Saito H.

autor

Nakashima T.

autor

Nakase K.

autor

Sudoh M.

• Department of Materials Science and Chemical Engineering, Shizuoka University, 3-5-1 Johoku, Naka ward, Hamamatsu, 432-8561, Japan,

Bibliografia

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