A novel sintering resistant and corrosion resistant Pt4ZrO2/C catalyst for high temperature PEMFCs
- 1. Graduate School of the Chinese Academy of Sciences, Beijing 100039 (China)
- 2. Proton Exchange Membrane Fuel Cell Key Materials and Technology Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China)
Description
A novel Pt4ZrO2/C catalyst was prepared and compared with 20 wt.% Pt/C in terms of the sintering resistance and corrosion resistance. To evaluate their sintering resistance and corrosion resistance properties, an accelerated ageing test (AAT) was performed. The catalysts before and after AAT were characterized by cyclic voltammetry (CV), rotating disk electrode (RDE) and X-ray diffraction (XRD). After AAT, the dissolution rate of Pt and Zr in H3PO4 media (105 wt.%, 204 deg. C) was characterized by inductively coupled plasma-atomic emission spectroscopy (ICP-AES). The electrochemical area (ECA) changes of thin film electrodes based on Pt4ZrO2/C and Pt/C catalysts were also evaluated using continuous CV sweep technique. All the results showed that Pt4ZrO2/C has higher sintering resistance and corrosion resistance than Pt/C. 'Anchor effect' is proposed to explain the enhanced effect of ZrO2 in Pt4ZrO2/C binary catalyst compared with Pt/C that contain platinum alone
Additional details
Identifiers
- DOI
- 10.1016/j.electacta.2006.03.004;
- PII
- S0013-4686(06)00222-2;
Publishing Information
- Journal Title
- Electrochimica Acta
- Journal Volume
- 51
- Journal Issue
- 26
- Journal Page Range
- p. 5710-5714
- ISSN
- 0013-4686
- CODEN
- ELCAAV
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38022064
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- AUGER ELECTRON SPECTROSCOPY; CORROSION RESISTANCE; ELECTROCATALYSTS; EMISSION SPECTROSCOPY; PHOSPHORIC ACID; PLATINUM COMPOUNDS; PROTON EXCHANGE MEMBRANE FUEL CELLS; SINTERING; TEMPERATURE RANGE 0400-1000 K; THIN FILMS; VOLTAMETRY; X-RAY DIFFRACTION; ZIRCONIUM OXIDES
- Descriptors DEC
- CATALYSTS; CHALCOGENIDES; COHERENT SCATTERING; DIFFRACTION; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; ELECTRON SPECTROSCOPY; FABRICATION; FILMS; FUEL CELLS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; SCATTERING; SOLID ELECTROLYTE FUEL CELLS; SPECTROSCOPY; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.