Calcined Co-chelating, imine-crosslinking chitosan as the ORR catalyst of an anion exchange membrane fuel cell
Cobalt-chelating imine-crosslinked chitosan (Co-ICCA) is synthesized via Schiff base condensation of terephthalaldehyde and chitosan in the presence of cobalt chloride. Co-ICCA transforms into Co, N-co-doped carbon cathode catalysts (Co-N-Cs) upon calcination. The successful synthesis is confirmed u...
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Elsevier
2025-01-01
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| Series: | Carbon Trends |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667056924001238 |
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| author | Yen-Zen Wang Ko-Shan Ho Yu-Chang Huang Yu-Wei Cheng Chia-Long Miao Pei-Ying Yeh |
| author_facet | Yen-Zen Wang Ko-Shan Ho Yu-Chang Huang Yu-Wei Cheng Chia-Long Miao Pei-Ying Yeh |
| author_sort | Yen-Zen Wang |
| collection | DOAJ |
| description | Cobalt-chelating imine-crosslinked chitosan (Co-ICCA) is synthesized via Schiff base condensation of terephthalaldehyde and chitosan in the presence of cobalt chloride. Co-ICCA transforms into Co, N-co-doped carbon cathode catalysts (Co-N-Cs) upon calcination. The successful synthesis is confirmed using Fourier Transform Infrared Spectroscopy. The porous morphologies of the calcined Co-ICCA are characterized by transmission electron microscopy, high-resolution transmission electron microscopy, and field-emission scanning electron microscopy. The Co-N-Cs exhibit a high specific surface area (433 m²/g) and porosity, as analyzed by a BET analyzer. X-ray diffraction patterns reveal sharp graphite diffraction peaks and feature peaks of Co-crystal with an FCC lattice when the calcination temperature exceeds 800 °C, indicating high crystallinity.Meanwhile, Raman spectra show a higher G-band intensity compared to the D-band. The performance of Co-N-Cs as cathode catalysts, particularly in the oxygen reduction reaction, is evaluated through current-voltage and linear sweep voltammetry curves and compared to commercial Pt/C catalysts. Single-cell using the Co-N-C catalyst as the cathode reaches a high maximum power density of 221 mW cm-2, close to the 285 mW cm-² achieved with Pt/C as the cathode catalyst. |
| format | Article |
| id | doaj-art-ba57f7e8f13a426fa378fbf94e011497 |
| institution | Kabale University |
| issn | 2667-0569 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Trends |
| spelling | doaj-art-ba57f7e8f13a426fa378fbf94e0114972025-01-10T04:38:16ZengElsevierCarbon Trends2667-05692025-01-0118100444Calcined Co-chelating, imine-crosslinking chitosan as the ORR catalyst of an anion exchange membrane fuel cellYen-Zen Wang0Ko-Shan Ho1Yu-Chang Huang2Yu-Wei Cheng3Chia-Long Miao4Pei-Ying Yeh5Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, 123, Sec. 3, University Road, Dou-Liu City, Yun-Lin 64301, TaiwanDepartment of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415, Chien-Kuo Road, Kaohsiung 80782, Taiwan; Corresponding authors.Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415, Chien-Kuo Road, Kaohsiung 80782, Taiwan; Corresponding authors.Department of Chemical Engineering, Ming Chi University of Technology, 84 Gungjuan Road, Taishan Dist., New Taipei City 243303, 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 Yunlin University of Science and Technology, 123, Sec. 3, University Road, Dou-Liu City, Yun-Lin 64301, TaiwanCobalt-chelating imine-crosslinked chitosan (Co-ICCA) is synthesized via Schiff base condensation of terephthalaldehyde and chitosan in the presence of cobalt chloride. Co-ICCA transforms into Co, N-co-doped carbon cathode catalysts (Co-N-Cs) upon calcination. The successful synthesis is confirmed using Fourier Transform Infrared Spectroscopy. The porous morphologies of the calcined Co-ICCA are characterized by transmission electron microscopy, high-resolution transmission electron microscopy, and field-emission scanning electron microscopy. The Co-N-Cs exhibit a high specific surface area (433 m²/g) and porosity, as analyzed by a BET analyzer. X-ray diffraction patterns reveal sharp graphite diffraction peaks and feature peaks of Co-crystal with an FCC lattice when the calcination temperature exceeds 800 °C, indicating high crystallinity.Meanwhile, Raman spectra show a higher G-band intensity compared to the D-band. The performance of Co-N-Cs as cathode catalysts, particularly in the oxygen reduction reaction, is evaluated through current-voltage and linear sweep voltammetry curves and compared to commercial Pt/C catalysts. Single-cell using the Co-N-C catalyst as the cathode reaches a high maximum power density of 221 mW cm-2, close to the 285 mW cm-² achieved with Pt/C as the cathode catalyst.http://www.sciencedirect.com/science/article/pii/S2667056924001238ChitosanCobalt-chelationCatalystCalcinationOxygen reduction reaction |
| spellingShingle | Yen-Zen Wang Ko-Shan Ho Yu-Chang Huang Yu-Wei Cheng Chia-Long Miao Pei-Ying Yeh Calcined Co-chelating, imine-crosslinking chitosan as the ORR catalyst of an anion exchange membrane fuel cell Carbon Trends Chitosan Cobalt-chelation Catalyst Calcination Oxygen reduction reaction |
| title | Calcined Co-chelating, imine-crosslinking chitosan as the ORR catalyst of an anion exchange membrane fuel cell |
| title_full | Calcined Co-chelating, imine-crosslinking chitosan as the ORR catalyst of an anion exchange membrane fuel cell |
| title_fullStr | Calcined Co-chelating, imine-crosslinking chitosan as the ORR catalyst of an anion exchange membrane fuel cell |
| title_full_unstemmed | Calcined Co-chelating, imine-crosslinking chitosan as the ORR catalyst of an anion exchange membrane fuel cell |
| title_short | Calcined Co-chelating, imine-crosslinking chitosan as the ORR catalyst of an anion exchange membrane fuel cell |
| title_sort | calcined co chelating imine crosslinking chitosan as the orr catalyst of an anion exchange membrane fuel cell |
| topic | Chitosan Cobalt-chelation Catalyst Calcination Oxygen reduction reaction |
| url | http://www.sciencedirect.com/science/article/pii/S2667056924001238 |
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