Abstract
We have prepared nanocomposite proton exchange membranes (PEMs) based on Nafion with sulfonic acid functionalized zeolite beta (AFB) as an additive. 2.5 and 5 wt% AFB composite membranes possess proton conductivity/methanol permeability (selectivity) ratios as much as 93% higher than commercial Nafion 117 at 21 °C, and 63% higher at 80 °C. These 2.5 and 5 wt% AFB composite membranes also outperform commercial Nafion 117 in direct methanol fuel cell performance evaluations. The composite membranes are characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, four-electrode impedance for proton conductivity, two-compartment permeation for methanol crossover, and direct methanol fuel cell performance. © 2008 Elsevier B.V. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 86-92 |
| Journal | Journal of Membrane Science |
| Volume | 320 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 15 Jul 2008 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]Funding
We would like to thank Riverside Public Utilities and NSF (CTS-0404376) for the funding of this project. We would also like to thank E-TEK for their kind donation of the catalysts used in this study.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Research Keywords
- Acid functional groups
- Composite membrane
- Fuel cell
- Methanol crossover
- Zeolite nanocrystals
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