Effects of Carbonization Temperature and Time during Carbon Riveting Process on the Stability of Pt/C Catalyst

Effects of carbonization temperature and time during carbon riveting process on the stability of Pt/C catalysts have been investigated systematically. X‐ray diffraction, transmission electron microscopy, cyclic voltammograms, and accelerated potential cycling tests have been performed to characteriz...

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Veröffentlicht in:	Fuel cells (Weinheim an der Bergstrasse, Germany) Germany), 2014-08, Vol.14 (4), p.660-666
Hauptverfasser:	Jiang, Z.-Z., Wang, Z.-B., Rivera, H., Qu, W.-L., Gu, D.-M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Carbonization Temperature Carbonization Time Catalysts Fuel cells Particle size Proton Exchange Membrane Fuel Cells Sintering Stability
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container_title	Fuel cells (Weinheim an der Bergstrasse, Germany)
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creator	Jiang, Z.-Z. Wang, Z.-B. Rivera, H. Qu, W.-L. Gu, D.-M.
description	Effects of carbonization temperature and time during carbon riveting process on the stability of Pt/C catalysts have been investigated systematically. X‐ray diffraction, transmission electron microscopy, cyclic voltammograms, and accelerated potential cycling tests have been performed to characterize the catalysts. The experimental results show that the activity of the riveted Pt/C catalyst decreases with the increasing of the heat‐treated temperature and the extension of heat‐treated time due to sintering of Pt nanoparticles. The stability of the carbon riveted Pt/C catalysts exhibits the increasing trend with the increase of the carbonization time and temperature. Considering both of the activity and stability of the riveted Pt/C catalysts, the optimized carbonization temperature and time are 400 °C and 60 min for a Pt/VulcanXC‐72 catalyst with starting particle size before carbonization of 2.2 nm and 20 wt% platinum loading, respectively.
doi_str_mv	10.1002/fuce.201300280
format	Article
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X‐ray diffraction, transmission electron microscopy, cyclic voltammograms, and accelerated potential cycling tests have been performed to characterize the catalysts. The experimental results show that the activity of the riveted Pt/C catalyst decreases with the increasing of the heat‐treated temperature and the extension of heat‐treated time due to sintering of Pt nanoparticles. The stability of the carbon riveted Pt/C catalysts exhibits the increasing trend with the increase of the carbonization time and temperature. Considering both of the activity and stability of the riveted Pt/C catalysts, the optimized carbonization temperature and time are 400 °C and 60 min for a Pt/VulcanXC‐72 catalyst with starting particle size before carbonization of 2.2 nm and 20 wt% platinum loading, respectively.</abstract><cop>Weinheim</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/fuce.201300280</doi><tpages>7</tpages></addata></record>
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subjects	Carbonization Temperature Carbonization Time Catalysts Fuel cells Particle size Proton Exchange Membrane Fuel Cells Sintering Stability
title	Effects of Carbonization Temperature and Time during Carbon Riveting Process on the Stability of Pt/C Catalyst
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