Stack performance of phosphotungstic acid functionalized mesoporous silica (HPW-mesosilica) nanocomposite high temperature proton exchange membrane fuel cells
In this paper, a series of short stacks with 2-cell, 6-cell and 10-cell employing phosphotungstic acid functionalized mesoporous silica (HPW-meso-silica) nanocomposite proton exchange membranes (PEMs) have been successfully fabricated, assembled and tested from room temperature to 200 °C. The effect...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
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Elsevier Ltd
2013
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/43703 |
| _version_ | 1848756780131155968 |
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| author | Zeng, J. Jin, B. Shen, P. He, B. Lamb, K. De Marco, Roland Jiang, San Ping |
| author_facet | Zeng, J. Jin, B. Shen, P. He, B. Lamb, K. De Marco, Roland Jiang, San Ping |
| author_sort | Zeng, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this paper, a series of short stacks with 2-cell, 6-cell and 10-cell employing phosphotungstic acid functionalized mesoporous silica (HPW-meso-silica) nanocomposite proton exchange membranes (PEMs) have been successfully fabricated, assembled and tested from room temperature to 200 °C. The effective surface area of the membrane was 20 cm2 and fabricated by a modified hot-pressing method. With the 2-cell stack, the open circuit voltage was 1.94 V and it was 5.01 V for the 6-cell stack, indicating a low gas permeability of the HPW-meso-silica membranes. With the 10-cell stack, a maximum power density of 74.4 W (equivalent to 372.1 mW cm−2) occurs at 150 °C in H2/O2, and the stack produces a near-constant power output of 31.6 W in H2/air at 150 °C without external humidification for 50 h. The short stack also displays good performance and stability during startup and shutdown cycling testing for 8 days at 150 °C in H2/air. Although the stack test period may be too short to extract definitive conclusions, the results are very promising, demonstrating the feasibility of the new inorganic HPW-meso-silica nanocomposites as PEMs for fuel cell stacks operating at elevated temperatures in the absence of external humidification. |
| first_indexed | 2025-11-14T09:17:38Z |
| format | Journal Article |
| id | curtin-20.500.11937-43703 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:17:38Z |
| publishDate | 2013 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-437032017-09-13T15:32:49Z Stack performance of phosphotungstic acid functionalized mesoporous silica (HPW-mesosilica) nanocomposite high temperature proton exchange membrane fuel cells Zeng, J. Jin, B. Shen, P. He, B. Lamb, K. De Marco, Roland Jiang, San Ping stack performance phosphotungstic acid functionalized mesoporous silica high temperature PEM proton exchange membrane fuel cells startup and shut-down In this paper, a series of short stacks with 2-cell, 6-cell and 10-cell employing phosphotungstic acid functionalized mesoporous silica (HPW-meso-silica) nanocomposite proton exchange membranes (PEMs) have been successfully fabricated, assembled and tested from room temperature to 200 °C. The effective surface area of the membrane was 20 cm2 and fabricated by a modified hot-pressing method. With the 2-cell stack, the open circuit voltage was 1.94 V and it was 5.01 V for the 6-cell stack, indicating a low gas permeability of the HPW-meso-silica membranes. With the 10-cell stack, a maximum power density of 74.4 W (equivalent to 372.1 mW cm−2) occurs at 150 °C in H2/O2, and the stack produces a near-constant power output of 31.6 W in H2/air at 150 °C without external humidification for 50 h. The short stack also displays good performance and stability during startup and shutdown cycling testing for 8 days at 150 °C in H2/air. Although the stack test period may be too short to extract definitive conclusions, the results are very promising, demonstrating the feasibility of the new inorganic HPW-meso-silica nanocomposites as PEMs for fuel cell stacks operating at elevated temperatures in the absence of external humidification. 2013 Journal Article http://hdl.handle.net/20.500.11937/43703 10.1016/j.ijhydene.2013.07.108 Elsevier Ltd restricted |
| spellingShingle | stack performance phosphotungstic acid functionalized mesoporous silica high temperature PEM proton exchange membrane fuel cells startup and shut-down Zeng, J. Jin, B. Shen, P. He, B. Lamb, K. De Marco, Roland Jiang, San Ping Stack performance of phosphotungstic acid functionalized mesoporous silica (HPW-mesosilica) nanocomposite high temperature proton exchange membrane fuel cells |
| title | Stack performance of phosphotungstic acid functionalized mesoporous silica (HPW-mesosilica) nanocomposite high temperature proton exchange membrane fuel cells |
| title_full | Stack performance of phosphotungstic acid functionalized mesoporous silica (HPW-mesosilica) nanocomposite high temperature proton exchange membrane fuel cells |
| title_fullStr | Stack performance of phosphotungstic acid functionalized mesoporous silica (HPW-mesosilica) nanocomposite high temperature proton exchange membrane fuel cells |
| title_full_unstemmed | Stack performance of phosphotungstic acid functionalized mesoporous silica (HPW-mesosilica) nanocomposite high temperature proton exchange membrane fuel cells |
| title_short | Stack performance of phosphotungstic acid functionalized mesoporous silica (HPW-mesosilica) nanocomposite high temperature proton exchange membrane fuel cells |
| title_sort | stack performance of phosphotungstic acid functionalized mesoporous silica (hpw-mesosilica) nanocomposite high temperature proton exchange membrane fuel cells |
| topic | stack performance phosphotungstic acid functionalized mesoporous silica high temperature PEM proton exchange membrane fuel cells startup and shut-down |
| url | http://hdl.handle.net/20.500.11937/43703 |