Abstract
Investigating HPA functionalized mesoporous silica materials for use as high temperature proton exchange membranes
Hands-on Workshop Density - Functional Theory and Beyond Program and Abstracts Booklet, p.31
Hands-on Workshop Density - Functional Theory and Beyond: First-Principles Simulations of Molecules and Materials, 2015 (Berlin, Germany, 13-Jul-2015–23-Jul-2015)
2015
Abstract
Medium temperature proton exchange membrane fuel cells (MT-PEMFCs) are solid-state energy conversion devices that electrochemically convert chemical energy (e.g., from alcohols) into electricity. MT-PEMFCs have advantages over low temperature fuel cells, such as elimination of carbon monoxide poisoning of the electrocatalyst [1], enhanced oxidation kinetics of alcohol fuels such as methanol [2], and the use of liquid fuels [3]. Heteropoly acids (HPA) such as phosphotungstic acid (HPW) can be used to impregnate ordered mesoporous silica (MSN) to make nanocomposite proton exchange membranes (PEMs) [4]. While these HPW MSN mixes have been studied extensively as catalysts [5], HPW MSNs have only recently be studied for use in MT-PEMFCs using methanol as a fuel [6]. Previous studies have investigated the correlations between physical stability, temperature, and fuel cell performance [6]. However, the structure of the HPW MSNs and how this affects the proton conduction efficiency and mechanism of proton conduction in these materials has not been investigated. In this project, MT-PEMFCs with HPW MSN have been studied using synchrotron, desktop and neutron scattering and spectroscopic techniques. The results show that the physical properties vary with increased HPW content, however further analysis is required to demonstrate the exact functional changes and how this impacts the proton conduction mechanism.
Details
- Title
- Investigating HPA functionalized mesoporous silica materials for use as high temperature proton exchange membranes
- Authors
- Krystina Lamb (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringRoland De Marco (Author) - University of the Sunshine CoastJohn R Bartlett (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringVanessa K Peterson (Author)San Ping Jiang (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
- Publication details
- Hands-on Workshop Density - Functional Theory and Beyond Program and Abstracts Booklet, p.31
- Conference details
- Hands-on Workshop Density - Functional Theory and Beyond: First-Principles Simulations of Molecules and Materials, 2015 (Berlin, Germany, 13-Jul-2015–23-Jul-2015)
- Publisher
- Fritz Haber Institute of the Max Planck Society
- Date published
- 2015
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; Office of the Deputy Vice-Chancellor (Research and Innovation)
- Language
- English
- Record Identifier
- 99449827502621
- Output Type
- Abstract
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