Development of In Situ Formed Metal Pyrophosphates (MP2O7, Where M = Sn, Ti, and Zr)/PA/PBI Based Composite Membranes for Fuel Cells
Development of high temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) at elevated temperatures is important for the enhancement of tolerance toward CO impurities and for the development of non-precious metal catalysts. The key challenge in such HT-PEMFCs is the high temperature polymer...
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| Format: | Journal Article |
| Language: | English |
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WILEY-V C H VERLAG GMBH
2023
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| Online Access: | http://purl.org/au-research/grants/arc/DP180100568 http://hdl.handle.net/20.500.11937/94733 |
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| author | Wang, Z. Zhang, J. Lu, S. Xiang, Y. Shao, Zongping Jiang, San Ping |
| author_facet | Wang, Z. Zhang, J. Lu, S. Xiang, Y. Shao, Zongping Jiang, San Ping |
| author_sort | Wang, Z. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Development of high temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) at elevated temperatures is important for the enhancement of tolerance toward CO impurities and for the development of non-precious metal catalysts. The key challenge in such HT-PEMFCs is the high temperature polymer electrolyte membranes. Herein, the development of in situ formed metal pyrophosphates (MP2O7, where M = Sn, Ti, and Zr) in phosphoric acid doped polybenzimidazole (PA/PBI) composite membranes for HT-PEMFCs is reported. The formation mechanism of MP2O7, and characteristics of MP2O7/PA/PBI composite membranes are studied in detail. In contrast to the rapid decay in performance of pristine PA/PBI membrane cells, the in situ formed MP2O7/PA/PBI composite membranes show significantly higher proton conductivity, improved performance, and stability at elevated temperatures of 200–250 °C. The best results are obtained on the in situ formed SnP2O7/PA/PBI composite membrane cells, exhibiting a high peak power density of 476 mW cm−2 and proton conductivity of 51.3 mS cm−1 at 250 °C. The excellent durability of SnP2O7/PA/PBI composite membrane is due to the uniform distribution of in situ formed SnP2O7 nanoparticles in PBI membranes and the formation of a gel-like region, thin and irregular amorphous layer on the SnP2O7 with the high acid retention ability. This effectively alleviates the PA leaching at elevated temperatures of the new HT-PEMFCs. |
| first_indexed | 2025-11-14T11:42:43Z |
| format | Journal Article |
| id | curtin-20.500.11937-94733 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:42:43Z |
| publishDate | 2023 |
| publisher | WILEY-V C H VERLAG GMBH |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-947332024-04-10T09:28:08Z Development of In Situ Formed Metal Pyrophosphates (MP2O7, Where M = Sn, Ti, and Zr)/PA/PBI Based Composite Membranes for Fuel Cells Wang, Z. Zhang, J. Lu, S. Xiang, Y. Shao, Zongping Jiang, San Ping Science & Technology Technology Green & Sustainable Science & Technology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science acid retention high temperature polymer electrolyte membrane fuel cells metal pyrophosphates SnP2O7 polybenzimidazole composite membranes PROTON CONDUCTIVITY PHOSPHORIC-ACID NANOCOMPOSITE MEMBRANES GRAPHENE OXIDE TEMPERATURE POLYBENZIMIDAZOLE PBI DURABILITY ENHANCEMENT DISSOLUTION Development of high temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) at elevated temperatures is important for the enhancement of tolerance toward CO impurities and for the development of non-precious metal catalysts. The key challenge in such HT-PEMFCs is the high temperature polymer electrolyte membranes. Herein, the development of in situ formed metal pyrophosphates (MP2O7, where M = Sn, Ti, and Zr) in phosphoric acid doped polybenzimidazole (PA/PBI) composite membranes for HT-PEMFCs is reported. The formation mechanism of MP2O7, and characteristics of MP2O7/PA/PBI composite membranes are studied in detail. In contrast to the rapid decay in performance of pristine PA/PBI membrane cells, the in situ formed MP2O7/PA/PBI composite membranes show significantly higher proton conductivity, improved performance, and stability at elevated temperatures of 200–250 °C. The best results are obtained on the in situ formed SnP2O7/PA/PBI composite membrane cells, exhibiting a high peak power density of 476 mW cm−2 and proton conductivity of 51.3 mS cm−1 at 250 °C. The excellent durability of SnP2O7/PA/PBI composite membrane is due to the uniform distribution of in situ formed SnP2O7 nanoparticles in PBI membranes and the formation of a gel-like region, thin and irregular amorphous layer on the SnP2O7 with the high acid retention ability. This effectively alleviates the PA leaching at elevated temperatures of the new HT-PEMFCs. 2023 Journal Article http://hdl.handle.net/20.500.11937/94733 10.1002/adsu.202200432 English http://purl.org/au-research/grants/arc/DP180100568 http://purl.org/au-research/grants/arc/DP180100731 http://creativecommons.org/licenses/by/4.0/ WILEY-V C H VERLAG GMBH fulltext |
| spellingShingle | Science & Technology Technology Green & Sustainable Science & Technology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science acid retention high temperature polymer electrolyte membrane fuel cells metal pyrophosphates SnP2O7 polybenzimidazole composite membranes PROTON CONDUCTIVITY PHOSPHORIC-ACID NANOCOMPOSITE MEMBRANES GRAPHENE OXIDE TEMPERATURE POLYBENZIMIDAZOLE PBI DURABILITY ENHANCEMENT DISSOLUTION Wang, Z. Zhang, J. Lu, S. Xiang, Y. Shao, Zongping Jiang, San Ping Development of In Situ Formed Metal Pyrophosphates (MP2O7, Where M = Sn, Ti, and Zr)/PA/PBI Based Composite Membranes for Fuel Cells |
| title | Development of In Situ Formed Metal Pyrophosphates (MP2O7, Where M = Sn, Ti, and Zr)/PA/PBI Based Composite Membranes for Fuel Cells |
| title_full | Development of In Situ Formed Metal Pyrophosphates (MP2O7, Where M = Sn, Ti, and Zr)/PA/PBI Based Composite Membranes for Fuel Cells |
| title_fullStr | Development of In Situ Formed Metal Pyrophosphates (MP2O7, Where M = Sn, Ti, and Zr)/PA/PBI Based Composite Membranes for Fuel Cells |
| title_full_unstemmed | Development of In Situ Formed Metal Pyrophosphates (MP2O7, Where M = Sn, Ti, and Zr)/PA/PBI Based Composite Membranes for Fuel Cells |
| title_short | Development of In Situ Formed Metal Pyrophosphates (MP2O7, Where M = Sn, Ti, and Zr)/PA/PBI Based Composite Membranes for Fuel Cells |
| title_sort | development of in situ formed metal pyrophosphates (mp2o7, where m = sn, ti, and zr)/pa/pbi based composite membranes for fuel cells |
| topic | Science & Technology Technology Green & Sustainable Science & Technology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science acid retention high temperature polymer electrolyte membrane fuel cells metal pyrophosphates SnP2O7 polybenzimidazole composite membranes PROTON CONDUCTIVITY PHOSPHORIC-ACID NANOCOMPOSITE MEMBRANES GRAPHENE OXIDE TEMPERATURE POLYBENZIMIDAZOLE PBI DURABILITY ENHANCEMENT DISSOLUTION |
| url | http://purl.org/au-research/grants/arc/DP180100568 http://purl.org/au-research/grants/arc/DP180100568 http://hdl.handle.net/20.500.11937/94733 |