Oxygen reduction activity of thermally decomposed tetraphenylporphyrin as cathode catalyst of DMFC

Masami Taguchi; Hiroyuki Tamori; William H. Smyrl

doi:10.5188/ijsmer.13.141

Oxygen reduction activity of thermally decomposed tetraphenylporphyrin as cathode catalyst of DMFC

Masami Taguchi, Hiroyuki Tamori, William H. Smyrl

Chemical Engineering and Materials Science

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3 Scopus citations

Abstract

DMFC has a serious technical problem, which is called "crossover" . The crossover CH₃OH, which passes through the polymer electrolyte from the anode to cathode, usually adsorbs on the surface of the cathode catalyst (Pt black) that decreases the DMFC performance. In this study, tetraphenylporphine and tetraphenylporphyrin-metals (metals: Co, Mn and Ru) were thermally decomposed at 673-1173 K for 7.2 ks and the activity of the oxygen reduction of the product was investigated using a rotating disk electrode in order to develop a new cathode catalyst with CH₃OH tolerance. The thermally decomposed TPP-Co and TPP-Ru, which have no activity toward CH ₃OH oxidation, are possible materials as the cathode catalyst of the DMFC, thus being a substitute for the Pt black.

Original language	English (US)
Pages (from-to)	141-147
Number of pages	7
Journal	International Journal of the Society of Material Engineering for Resources
Volume	13
Issue number	2
DOIs	https://doi.org/10.5188/ijsmer.13.141
State	Published - Mar 2006

Keywords

Cathode Catalyst
DMFC
Oxygen Reduction
Tetraphenylporphyrin-metals

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AU - Smyrl, William H.

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N2 - DMFC has a serious technical problem, which is called "crossover" . The crossover CH3OH, which passes through the polymer electrolyte from the anode to cathode, usually adsorbs on the surface of the cathode catalyst (Pt black) that decreases the DMFC performance. In this study, tetraphenylporphine and tetraphenylporphyrin-metals (metals: Co, Mn and Ru) were thermally decomposed at 673-1173 K for 7.2 ks and the activity of the oxygen reduction of the product was investigated using a rotating disk electrode in order to develop a new cathode catalyst with CH3OH tolerance. The thermally decomposed TPP-Co and TPP-Ru, which have no activity toward CH 3OH oxidation, are possible materials as the cathode catalyst of the DMFC, thus being a substitute for the Pt black.

AB - DMFC has a serious technical problem, which is called "crossover" . The crossover CH3OH, which passes through the polymer electrolyte from the anode to cathode, usually adsorbs on the surface of the cathode catalyst (Pt black) that decreases the DMFC performance. In this study, tetraphenylporphine and tetraphenylporphyrin-metals (metals: Co, Mn and Ru) were thermally decomposed at 673-1173 K for 7.2 ks and the activity of the oxygen reduction of the product was investigated using a rotating disk electrode in order to develop a new cathode catalyst with CH3OH tolerance. The thermally decomposed TPP-Co and TPP-Ru, which have no activity toward CH 3OH oxidation, are possible materials as the cathode catalyst of the DMFC, thus being a substitute for the Pt black.

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Oxygen reduction activity of thermally decomposed tetraphenylporphyrin as cathode catalyst of DMFC

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