Fe, N-Doped Metal Organic Framework Prepared by the Calcination of Iron Chelated Polyimines as the Cathode-Catalyst of Proton Exchange Membrane Fuel Cells
Aromatic polyimine (PIM) was prepared through condensation polymerization between p-phenylene diamine and terephthalaldehyde via Schiff reactions. PIM can be physically crosslinked with ferrous ions into gel. The gel-composites, calcined at two consecutive stages, with temperatures ranging from 600...
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MDPI AG
2021-11-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/21/3850 |
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| author | Yu-Wei Cheng Wen-Yao Huang Ko-Shan Ho Tar-Hwa Hsieh Li-Cheng Jheng Yang-Ming Kuo |
| author_facet | Yu-Wei Cheng Wen-Yao Huang Ko-Shan Ho Tar-Hwa Hsieh Li-Cheng Jheng Yang-Ming Kuo |
| author_sort | Yu-Wei Cheng |
| collection | DOAJ |
| description | Aromatic polyimine (PIM) was prepared through condensation polymerization between p-phenylene diamine and terephthalaldehyde via Schiff reactions. PIM can be physically crosslinked with ferrous ions into gel. The gel-composites, calcined at two consecutive stages, with temperatures ranging from 600 to 1000 °C, became Fe- and N-doped carbonaceous organic frameworks (FeNC), which demonstrated both graphene- and carbon nanotube-like morphologies and behaved as an electron-conducting medium. After the two-stage calcination, one at 1000 °C in N<sub>2</sub> and the other at 900 °C in a mixture of N<sub>2</sub> and NH<sub>3</sub>, an FeNC composite (FeNC-1000A900) was obtained, which demonstrated a significant O<sub>2</sub> reduction peak in its current–voltage curve in the O<sub>2</sub> atmosphere, and thus, qualified as a catalyst for the oxygen reduction reaction. It also produced a higher reduction current than that of commercial Pt/C in a linear scanning voltage test, and the calculated e-transferred number reached 3.85. The max. power density reached 400 mW·cm<sup>−2</sup> for the single cell using FeNC-1000A900 as the cathode catalyst, which was superior to other FeNC catalysts that were calcined at lower temperatures. The FeNC demonstrated only 10% loss of the reduction current at 1600 rpm after 1000 redox cycles, as compared to be 25% loss for the commercial Pt/C catalyst in the durability test. |
| first_indexed | 2024-03-10T05:53:50Z |
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| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T05:53:50Z |
| publishDate | 2021-11-01 |
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| series | Polymers |
| spelling | doaj.art-5ac9d5b7456b47d38f5888c0100751c52023-11-22T21:29:40ZengMDPI AGPolymers2073-43602021-11-011321385010.3390/polym13213850Fe, N-Doped Metal Organic Framework Prepared by the Calcination of Iron Chelated Polyimines as the Cathode-Catalyst of Proton Exchange Membrane Fuel CellsYu-Wei Cheng0Wen-Yao Huang1Ko-Shan Ho2Tar-Hwa Hsieh3Li-Cheng Jheng4Yang-Ming Kuo5Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, TaiwanDepartment of Photonics, National Sun Yat-Sen University, 70 Lienhai Rd., Kaohsiung 80424, TaiwanDepartment of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415, Chien-Kuo Road, Kaohsiung 80782, TaiwanDepartment of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415, Chien-Kuo Road, Kaohsiung 80782, TaiwanDepartment of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415, Chien-Kuo Road, Kaohsiung 80782, TaiwanDepartment of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415, Chien-Kuo Road, Kaohsiung 80782, TaiwanAromatic polyimine (PIM) was prepared through condensation polymerization between p-phenylene diamine and terephthalaldehyde via Schiff reactions. PIM can be physically crosslinked with ferrous ions into gel. The gel-composites, calcined at two consecutive stages, with temperatures ranging from 600 to 1000 °C, became Fe- and N-doped carbonaceous organic frameworks (FeNC), which demonstrated both graphene- and carbon nanotube-like morphologies and behaved as an electron-conducting medium. After the two-stage calcination, one at 1000 °C in N<sub>2</sub> and the other at 900 °C in a mixture of N<sub>2</sub> and NH<sub>3</sub>, an FeNC composite (FeNC-1000A900) was obtained, which demonstrated a significant O<sub>2</sub> reduction peak in its current–voltage curve in the O<sub>2</sub> atmosphere, and thus, qualified as a catalyst for the oxygen reduction reaction. It also produced a higher reduction current than that of commercial Pt/C in a linear scanning voltage test, and the calculated e-transferred number reached 3.85. The max. power density reached 400 mW·cm<sup>−2</sup> for the single cell using FeNC-1000A900 as the cathode catalyst, which was superior to other FeNC catalysts that were calcined at lower temperatures. The FeNC demonstrated only 10% loss of the reduction current at 1600 rpm after 1000 redox cycles, as compared to be 25% loss for the commercial Pt/C catalyst in the durability test.https://www.mdpi.com/2073-4360/13/21/3850FeNC catalystpolyiminetwo-stage calcinationoxygen reduction reaction |
| spellingShingle | Yu-Wei Cheng Wen-Yao Huang Ko-Shan Ho Tar-Hwa Hsieh Li-Cheng Jheng Yang-Ming Kuo Fe, N-Doped Metal Organic Framework Prepared by the Calcination of Iron Chelated Polyimines as the Cathode-Catalyst of Proton Exchange Membrane Fuel Cells Polymers FeNC catalyst polyimine two-stage calcination oxygen reduction reaction |
| title | Fe, N-Doped Metal Organic Framework Prepared by the Calcination of Iron Chelated Polyimines as the Cathode-Catalyst of Proton Exchange Membrane Fuel Cells |
| title_full | Fe, N-Doped Metal Organic Framework Prepared by the Calcination of Iron Chelated Polyimines as the Cathode-Catalyst of Proton Exchange Membrane Fuel Cells |
| title_fullStr | Fe, N-Doped Metal Organic Framework Prepared by the Calcination of Iron Chelated Polyimines as the Cathode-Catalyst of Proton Exchange Membrane Fuel Cells |
| title_full_unstemmed | Fe, N-Doped Metal Organic Framework Prepared by the Calcination of Iron Chelated Polyimines as the Cathode-Catalyst of Proton Exchange Membrane Fuel Cells |
| title_short | Fe, N-Doped Metal Organic Framework Prepared by the Calcination of Iron Chelated Polyimines as the Cathode-Catalyst of Proton Exchange Membrane Fuel Cells |
| title_sort | fe n doped metal organic framework prepared by the calcination of iron chelated polyimines as the cathode catalyst of proton exchange membrane fuel cells |
| topic | FeNC catalyst polyimine two-stage calcination oxygen reduction reaction |
| url | https://www.mdpi.com/2073-4360/13/21/3850 |
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