Research of Non-Platinum gas diffusion electrode preparation for anion exchange membrane fuel cells
One of the most merits of AEMFCs compared to PEMFCs is the ORR at cathode is much faster, resulting in that non-noble metals can be used as cathode catalysts. However, based on the principle of AEMFCs, it is expected that water management in AEMFCs is more complicated than that in PEMFCs. On the oth...
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| Ngôn ngữ: | vie |
| Được phát hành: |
National Chung Hsing University
2021
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| Truy cập trực tuyến: | https://opac.tvu.edu.vn/pages/opac/wpid-detailbib-id-36826.html |
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| Thư viện lưu trữ: | Trung tâm Học liệu – Phát triển Dạy và Học, Trường Đại học Trà Vinh |
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| Tóm tắt: | One of the most merits of AEMFCs compared to PEMFCs is the ORR at cathode is much faster, resulting in that non-noble metals can be used as cathode catalysts. However, based on the principle of AEMFCs, it is expected that water management in AEMFCs is more complicated than that in PEMFCs. On the other hand, it is known that GDL structure which is very complicated has a significant influence on the water condition in the cell and thereby an AEMFC performance. Until now, few research has been done on investigating the effect of GDL properties, especially its hydrophobic level, which strongly influence on water transport in the cell, on the AEMFC performance. Hence, it is essential to understand the influence of hydrophobic treatment of a gas diffusion substrate on its properties as well as on the overall performance of the cell. In addition, successful development of efficient non-platinum electrodes used for AEMFCs is a critical step to make them commercialized. The objective of this dissertation deals with some aspects of preparation of non-platinum electrode for AEMFCs. Accordingly, a non-noble metal-based catalyst for oxygen reduction in AEMFCs is firstly developed and evaluated. Secondly, the effects of the PTFE content in the gas diffusion substrate and microporous layer on the performance of anion exchange membrane fuel cells are systematically investigated. Finally, the effects of cell temperature and humidification of the inlet reactants on the moisture conditions in the AEMFCs is discussed in details. It is expected that these findings in this dissertation can significantly contribute to the progress of non-platinum electrode development for AEMFCs. |
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