Carbonized Nickel Complex of Sodium Pectate as Catalyst for Proton-Exchange Membrane Fuel Cells
Sodium pectate derivatives with 25% replacement of sodium ions with nickel ions were obtained by carbonization to temperatures of 280, 550, and 800 °C, under special protocols in an inert atmosphere by carbonization to temperatures of 280, 550, and 800 °C. The 25% substitution is the upper limit of...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/13/7/635 |
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| author | Kirill V. Kholin Aigul F. Sabirova Danis M. Kadirov Ayrat R. Khamatgalimov Mikhail N. Khrizanforov Irek R. Nizameev Mikhail V. Morozov Radis R. Gainullin Timur P. Sultanov Salima T. Minzanova Eugene S. Nefed’ev Marsil K. Kadirov |
| author_facet | Kirill V. Kholin Aigul F. Sabirova Danis M. Kadirov Ayrat R. Khamatgalimov Mikhail N. Khrizanforov Irek R. Nizameev Mikhail V. Morozov Radis R. Gainullin Timur P. Sultanov Salima T. Minzanova Eugene S. Nefed’ev Marsil K. Kadirov |
| author_sort | Kirill V. Kholin |
| collection | DOAJ |
| description | Sodium pectate derivatives with 25% replacement of sodium ions with nickel ions were obtained by carbonization to temperatures of 280, 550, and 800 °C, under special protocols in an inert atmosphere by carbonization to temperatures of 280, 550, and 800 °C. The 25% substitution is the upper limit of substitution of sodium for nickel ions, above which the complexes are no longer soluble in water. It was established that the sample carburized to 550 °C is the most effective active element in the hydrogen-oxidation reaction, while the sample carbonized up to 800 °C was the most effective in the oxygen-reduction reaction. The poor performance of the catalytic system involving the pectin coordination biopolymer carbonized up to 280 °C was due to loss of proton conductivity caused by water removal and mainly by two-electron transfer in one catalytic cycle of the oxygen-reduction reaction. The improved performance of the system with coordination biopolymer carbonized up to 550 °C was due to the better access of gases to the catalytic sites and four-electron transfer in one catalytic cycle. The (Ni-NaPG)<sub>800C</sub> sample contains metallic nickel nanoparticles and loose carbon, which enhances the electrical conductivity and gas capacity of the catalytic system. In addition, almost four-electron transfer is observed in one catalytic cycle of the oxygen-reduction reaction. |
| first_indexed | 2024-03-11T00:50:49Z |
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| id | doaj.art-60f59f46a25e416090fac32192b7be77 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-11T00:50:49Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-60f59f46a25e416090fac32192b7be772023-11-18T20:26:08ZengMDPI AGMembranes2077-03752023-06-0113763510.3390/membranes13070635Carbonized Nickel Complex of Sodium Pectate as Catalyst for Proton-Exchange Membrane Fuel CellsKirill V. Kholin0Aigul F. Sabirova1Danis M. Kadirov2Ayrat R. Khamatgalimov3Mikhail N. Khrizanforov4Irek R. Nizameev5Mikhail V. Morozov6Radis R. Gainullin7Timur P. Sultanov8Salima T. Minzanova9Eugene S. Nefed’ev10Marsil K. Kadirov11Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan 420088, RussiaArbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan 420088, RussiaDepartment of Physics, Kazan National Research Technological University, Kazan 420015, RussiaArbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan 420088, RussiaArbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan 420088, RussiaArbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan 420088, RussiaDepartment of Nanotechnology in Electronics, Kazan National Research Technical University named after A.N. Tupolev—KAI, Kazan 420111, RussiaArbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan 420088, RussiaArbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan 420088, RussiaArbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan 420088, RussiaDepartment of Physics, Kazan National Research Technological University, Kazan 420015, RussiaArbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan 420088, RussiaSodium pectate derivatives with 25% replacement of sodium ions with nickel ions were obtained by carbonization to temperatures of 280, 550, and 800 °C, under special protocols in an inert atmosphere by carbonization to temperatures of 280, 550, and 800 °C. The 25% substitution is the upper limit of substitution of sodium for nickel ions, above which the complexes are no longer soluble in water. It was established that the sample carburized to 550 °C is the most effective active element in the hydrogen-oxidation reaction, while the sample carbonized up to 800 °C was the most effective in the oxygen-reduction reaction. The poor performance of the catalytic system involving the pectin coordination biopolymer carbonized up to 280 °C was due to loss of proton conductivity caused by water removal and mainly by two-electron transfer in one catalytic cycle of the oxygen-reduction reaction. The improved performance of the system with coordination biopolymer carbonized up to 550 °C was due to the better access of gases to the catalytic sites and four-electron transfer in one catalytic cycle. The (Ni-NaPG)<sub>800C</sub> sample contains metallic nickel nanoparticles and loose carbon, which enhances the electrical conductivity and gas capacity of the catalytic system. In addition, almost four-electron transfer is observed in one catalytic cycle of the oxygen-reduction reaction.https://www.mdpi.com/2077-0375/13/7/635carbonizationcoordination biopolymersproton-exchange membrane fuel celloxygen-reduction reactionhydrogen-oxidation reactionnickel complex |
| spellingShingle | Kirill V. Kholin Aigul F. Sabirova Danis M. Kadirov Ayrat R. Khamatgalimov Mikhail N. Khrizanforov Irek R. Nizameev Mikhail V. Morozov Radis R. Gainullin Timur P. Sultanov Salima T. Minzanova Eugene S. Nefed’ev Marsil K. Kadirov Carbonized Nickel Complex of Sodium Pectate as Catalyst for Proton-Exchange Membrane Fuel Cells Membranes carbonization coordination biopolymers proton-exchange membrane fuel cell oxygen-reduction reaction hydrogen-oxidation reaction nickel complex |
| title | Carbonized Nickel Complex of Sodium Pectate as Catalyst for Proton-Exchange Membrane Fuel Cells |
| title_full | Carbonized Nickel Complex of Sodium Pectate as Catalyst for Proton-Exchange Membrane Fuel Cells |
| title_fullStr | Carbonized Nickel Complex of Sodium Pectate as Catalyst for Proton-Exchange Membrane Fuel Cells |
| title_full_unstemmed | Carbonized Nickel Complex of Sodium Pectate as Catalyst for Proton-Exchange Membrane Fuel Cells |
| title_short | Carbonized Nickel Complex of Sodium Pectate as Catalyst for Proton-Exchange Membrane Fuel Cells |
| title_sort | carbonized nickel complex of sodium pectate as catalyst for proton exchange membrane fuel cells |
| topic | carbonization coordination biopolymers proton-exchange membrane fuel cell oxygen-reduction reaction hydrogen-oxidation reaction nickel complex |
| url | https://www.mdpi.com/2077-0375/13/7/635 |
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