Synthesis and characterization of Nafion/60SiO2-30P 2O5-10ZrO2 sol-gel composite membranes for PEMFCs

M. Aparicio; L. C. Klein

doi:10.1149/1.1852443

Synthesis and characterization of Nafion/60SiO₂-30P ₂O₅-10ZrO₂ sol-gel composite membranes for PEMFCs

M. Aparicio, L. C. Klein

School of Engineering, Materials Science & Engineering

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

A limitation of Nafion membranes in proton-exchange membrane fuel cells (PEMFCs) is their poor water retention above 100°C. The incorporation of SiO₂-P₂O₅-ZrO₂ gels into Nafion membranes can improve their thermal stability. Therefore, composite membranes were prepared either by infiltration of Nafion membranes with SiO ₂-P₂O₅-ZrO₂ sol or by recasting a film using Nafion solution and SiO₂-P₂O ₅-ZrO₂ sol. The membranes were characterized by thermal analysis, microstructural analysis, functional testing in a fuel cell, and electrochemical impedance spectroscopy. The incorporation of the SiO ₂-P₂O₅-ZrO₂ gel resulted in improved electrochemical behavior at 130°C, with current density-cell potential values as good as those obtained at 80°C with unmodified Nafion membranes.

Original language	English (US)
Pages (from-to)	A493-A496
Journal	Journal of the Electrochemical Society
Volume	152
Issue number	3
DOIs	https://doi.org/10.1149/1.1852443
State	Published - 2005

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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abstract = "A limitation of Nafion membranes in proton-exchange membrane fuel cells (PEMFCs) is their poor water retention above 100°C. The incorporation of SiO2-P2O5-ZrO2 gels into Nafion membranes can improve their thermal stability. Therefore, composite membranes were prepared either by infiltration of Nafion membranes with SiO 2-P2O5-ZrO2 sol or by recasting a film using Nafion solution and SiO2-P2O 5-ZrO2 sol. The membranes were characterized by thermal analysis, microstructural analysis, functional testing in a fuel cell, and electrochemical impedance spectroscopy. The incorporation of the SiO 2-P2O5-ZrO2 gel resulted in improved electrochemical behavior at 130°C, with current density-cell potential values as good as those obtained at 80°C with unmodified Nafion membranes.",

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AU - Klein, L. C.

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N2 - A limitation of Nafion membranes in proton-exchange membrane fuel cells (PEMFCs) is their poor water retention above 100°C. The incorporation of SiO2-P2O5-ZrO2 gels into Nafion membranes can improve their thermal stability. Therefore, composite membranes were prepared either by infiltration of Nafion membranes with SiO 2-P2O5-ZrO2 sol or by recasting a film using Nafion solution and SiO2-P2O 5-ZrO2 sol. The membranes were characterized by thermal analysis, microstructural analysis, functional testing in a fuel cell, and electrochemical impedance spectroscopy. The incorporation of the SiO 2-P2O5-ZrO2 gel resulted in improved electrochemical behavior at 130°C, with current density-cell potential values as good as those obtained at 80°C with unmodified Nafion membranes.

AB - A limitation of Nafion membranes in proton-exchange membrane fuel cells (PEMFCs) is their poor water retention above 100°C. The incorporation of SiO2-P2O5-ZrO2 gels into Nafion membranes can improve their thermal stability. Therefore, composite membranes were prepared either by infiltration of Nafion membranes with SiO 2-P2O5-ZrO2 sol or by recasting a film using Nafion solution and SiO2-P2O 5-ZrO2 sol. The membranes were characterized by thermal analysis, microstructural analysis, functional testing in a fuel cell, and electrochemical impedance spectroscopy. The incorporation of the SiO 2-P2O5-ZrO2 gel resulted in improved electrochemical behavior at 130°C, with current density-cell potential values as good as those obtained at 80°C with unmodified Nafion membranes.

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Synthesis and characterization of Nafion/60SiO₂-30P ₂O₅-10ZrO₂ sol-gel composite membranes for PEMFCs

Abstract

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