Improved membrane and electrode assemblies for proton exchange membrane fuel cells
Three electrodes—E1 (0.18 mg Pt cm−2), E2 (0.38 mg Pt cm−2), E3 (0.4 mg Pt cm−2 without a gas-diffusion layer)—are fabricated and compared with a commercial product (E-TEK). The performance of the electrodes increases with increase in Pt loading in the catalyst layer. The performance of the E2 elect...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2003
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/111732/ http://psasir.upm.edu.my/id/eprint/111732/3/111732.pdf |
| _version_ | 1848865766248546304 |
|---|---|
| author | Iyuke, Sunny E. Mohamad, Abu Bakar Kadhum, Abdul Amir H. Daud, Wan R.W. Rachid, Chebbi |
| author_facet | Iyuke, Sunny E. Mohamad, Abu Bakar Kadhum, Abdul Amir H. Daud, Wan R.W. Rachid, Chebbi |
| author_sort | Iyuke, Sunny E. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Three electrodes—E1 (0.18 mg Pt cm−2), E2 (0.38 mg Pt cm−2), E3 (0.4 mg Pt cm−2 without a gas-diffusion layer)—are fabricated and compared with a commercial product (E-TEK). The performance of the electrodes increases with increase in Pt loading in the catalyst layer. The performance of the E2 electrode is superior to that of E1, E-TEK or E3. Elimination of the diffusion layer between the carbon-cloth substrate and the catalyst layer affects the performance of electrode E3 in particular. The power density shows a similar pattern to current density. The difference in performance between E2 and E-TEK electrodes may be due to the difference in the method of fabrication. Increase in exchange current density results in an increase in efficiency. The curves for E1, E2 and E-TEK electrodes appear to stabilize at constant efficiency, which indicates maximum efficiency at a lower exchange current density, compared with the E2 electrode, which does not approach a steady efficiency even at an exchange current density of 1 mA cm−2. This means that the E2 electrode has greater efficiency than E1, E3 or E-TEK electrodes. Voltage and irreversibility curves for the four electrodes meet at different voltage operational limits; namely, 0.48, 0.55, 0.46 and 0.42 V at 1.2, 0.85, 0.4 and 0.3 mA cm−2, for E-TEK, E2, E1 and E3 electrodes, respectively. Hence, while these electrodes can be operated conveniently, the E2 electrode with a 0.38 mg Pt cm−2 loading can be operated at optimum conditions of 0.55 V and 0.85 mA cm−2. |
| first_indexed | 2025-11-15T14:09:55Z |
| format | Article |
| id | upm-111732 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:09:55Z |
| publishDate | 2003 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1117322025-03-12T08:19:53Z http://psasir.upm.edu.my/id/eprint/111732/ Improved membrane and electrode assemblies for proton exchange membrane fuel cells Iyuke, Sunny E. Mohamad, Abu Bakar Kadhum, Abdul Amir H. Daud, Wan R.W. Rachid, Chebbi Three electrodes—E1 (0.18 mg Pt cm−2), E2 (0.38 mg Pt cm−2), E3 (0.4 mg Pt cm−2 without a gas-diffusion layer)—are fabricated and compared with a commercial product (E-TEK). The performance of the electrodes increases with increase in Pt loading in the catalyst layer. The performance of the E2 electrode is superior to that of E1, E-TEK or E3. Elimination of the diffusion layer between the carbon-cloth substrate and the catalyst layer affects the performance of electrode E3 in particular. The power density shows a similar pattern to current density. The difference in performance between E2 and E-TEK electrodes may be due to the difference in the method of fabrication. Increase in exchange current density results in an increase in efficiency. The curves for E1, E2 and E-TEK electrodes appear to stabilize at constant efficiency, which indicates maximum efficiency at a lower exchange current density, compared with the E2 electrode, which does not approach a steady efficiency even at an exchange current density of 1 mA cm−2. This means that the E2 electrode has greater efficiency than E1, E3 or E-TEK electrodes. Voltage and irreversibility curves for the four electrodes meet at different voltage operational limits; namely, 0.48, 0.55, 0.46 and 0.42 V at 1.2, 0.85, 0.4 and 0.3 mA cm−2, for E-TEK, E2, E1 and E3 electrodes, respectively. Hence, while these electrodes can be operated conveniently, the E2 electrode with a 0.38 mg Pt cm−2 loading can be operated at optimum conditions of 0.55 V and 0.85 mA cm−2. Elsevier 2003 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/111732/3/111732.pdf Iyuke, Sunny E. and Mohamad, Abu Bakar and Kadhum, Abdul Amir H. and Daud, Wan R.W. and Rachid, Chebbi (2003) Improved membrane and electrode assemblies for proton exchange membrane fuel cells. Journal of Power Sources, 114 (2). pp. 195-202. ISSN 0378-7753; eISSN: 1873-2755 https://linkinghub.elsevier.com/retrieve/pii/S0378775303000168 10.1016/s0378-7753(03)00016-8 |
| spellingShingle | Iyuke, Sunny E. Mohamad, Abu Bakar Kadhum, Abdul Amir H. Daud, Wan R.W. Rachid, Chebbi Improved membrane and electrode assemblies for proton exchange membrane fuel cells |
| title | Improved membrane and electrode assemblies for proton exchange membrane fuel cells |
| title_full | Improved membrane and electrode assemblies for proton exchange membrane fuel cells |
| title_fullStr | Improved membrane and electrode assemblies for proton exchange membrane fuel cells |
| title_full_unstemmed | Improved membrane and electrode assemblies for proton exchange membrane fuel cells |
| title_short | Improved membrane and electrode assemblies for proton exchange membrane fuel cells |
| title_sort | improved membrane and electrode assemblies for proton exchange membrane fuel cells |
| url | http://psasir.upm.edu.my/id/eprint/111732/ http://psasir.upm.edu.my/id/eprint/111732/ http://psasir.upm.edu.my/id/eprint/111732/ http://psasir.upm.edu.my/id/eprint/111732/3/111732.pdf |