Anhydrous phosphoric acid functionalized sintered mesoporous silica nanocomposite proton exchange membranes for fuel cells
A novel inorganic proton exchange membrane based on phosphoric acid (PA)-functionalized sintered mesoporous silica, PA-meso-silica, has been developed and investigated. After sintering at 650 °C, the meso-silica powder forms a dense membrane with a robust and ordered mesoporous structure, which is c...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
American Chemical Society
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/37861 |
| _version_ | 1848755163542585344 |
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| author | Zeng, J. He, B. Lamb, K. De Marco, Roland Shen, P. Jiang, San Ping |
| author_facet | Zeng, J. He, B. Lamb, K. De Marco, Roland Shen, P. Jiang, San Ping |
| author_sort | Zeng, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A novel inorganic proton exchange membrane based on phosphoric acid (PA)-functionalized sintered mesoporous silica, PA-meso-silica, has been developed and investigated. After sintering at 650 °C, the meso-silica powder forms a dense membrane with a robust and ordered mesoporous structure, which is critical for retention of PA and water within the porous material. The PA-meso-silica membrane achieved a high proton conductivity of 5 × 10–3 to 5 × 10–2 S cm–1 in a temperature range of 80–220 °C, which is between 1 and 2 orders of magnitudes higher than a typical membrane Nafion 117 or polybenzimidazole (PBI)/PA in the absence of external humidification. Furthermore, the PA-meso-silica membranes exhibited good chemical stability along with high performance at elevated temperatures, producing a peak power density of 632 mW cm–2 using a H2 fuel at 190 °C in the absence of external humidification. The high membrane proton conductivity and excellent fuel cell performance demonstrate the utility of PA-meso-silica as a new class of inorganic proton exchange membranes for use in the high-temperature proton exchange membrane fuel cells (PEMFCs). |
| first_indexed | 2025-11-14T08:51:56Z |
| format | Journal Article |
| id | curtin-20.500.11937-37861 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:51:56Z |
| publishDate | 2013 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-378612017-10-02T02:28:05Z Anhydrous phosphoric acid functionalized sintered mesoporous silica nanocomposite proton exchange membranes for fuel cells Zeng, J. He, B. Lamb, K. De Marco, Roland Shen, P. Jiang, San Ping fuel cells high-temperature proton exchange membrane sintered mesoporous silica phosphoric acid A novel inorganic proton exchange membrane based on phosphoric acid (PA)-functionalized sintered mesoporous silica, PA-meso-silica, has been developed and investigated. After sintering at 650 °C, the meso-silica powder forms a dense membrane with a robust and ordered mesoporous structure, which is critical for retention of PA and water within the porous material. The PA-meso-silica membrane achieved a high proton conductivity of 5 × 10–3 to 5 × 10–2 S cm–1 in a temperature range of 80–220 °C, which is between 1 and 2 orders of magnitudes higher than a typical membrane Nafion 117 or polybenzimidazole (PBI)/PA in the absence of external humidification. Furthermore, the PA-meso-silica membranes exhibited good chemical stability along with high performance at elevated temperatures, producing a peak power density of 632 mW cm–2 using a H2 fuel at 190 °C in the absence of external humidification. The high membrane proton conductivity and excellent fuel cell performance demonstrate the utility of PA-meso-silica as a new class of inorganic proton exchange membranes for use in the high-temperature proton exchange membrane fuel cells (PEMFCs). 2013 Journal Article http://hdl.handle.net/20.500.11937/37861 10.1021/am403479t American Chemical Society restricted |
| spellingShingle | fuel cells high-temperature proton exchange membrane sintered mesoporous silica phosphoric acid Zeng, J. He, B. Lamb, K. De Marco, Roland Shen, P. Jiang, San Ping Anhydrous phosphoric acid functionalized sintered mesoporous silica nanocomposite proton exchange membranes for fuel cells |
| title | Anhydrous phosphoric acid functionalized sintered mesoporous silica nanocomposite proton exchange membranes for fuel cells |
| title_full | Anhydrous phosphoric acid functionalized sintered mesoporous silica nanocomposite proton exchange membranes for fuel cells |
| title_fullStr | Anhydrous phosphoric acid functionalized sintered mesoporous silica nanocomposite proton exchange membranes for fuel cells |
| title_full_unstemmed | Anhydrous phosphoric acid functionalized sintered mesoporous silica nanocomposite proton exchange membranes for fuel cells |
| title_short | Anhydrous phosphoric acid functionalized sintered mesoporous silica nanocomposite proton exchange membranes for fuel cells |
| title_sort | anhydrous phosphoric acid functionalized sintered mesoporous silica nanocomposite proton exchange membranes for fuel cells |
| topic | fuel cells high-temperature proton exchange membrane sintered mesoporous silica phosphoric acid |
| url | http://hdl.handle.net/20.500.11937/37861 |