Solid Oxide Fuel Cell Anode Porosity and Tortuosity Effect on the Exergy Efficiency
Improving the efficiency of solid oxide fuel cells (SOFCs) is critical for advancing clean energy solutions on a global scale. One major challenge in enhancing SOFC efficiency is reducing anode diffusion polarization, which can significantly hinder performance. This study addresses this issue by inv...
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| description | Improving the efficiency of solid oxide fuel cells (SOFCs) is critical for advancing clean energy solutions on a global scale. One major challenge in enhancing SOFC efficiency is reducing anode diffusion polarization, which can significantly hinder performance. This study addresses this issue by investigating the effects of anode tortuosity and porosity on the exergy efficiency of SOFCs. The novelty of this research lies in its comprehensive numerical model, which uniquely incorporates detailed material properties and their impact on SOFC performance—specifically focusing on anode tortuosity and porosity. Using advanced Multiphysics software, we developed a model that solves mass, electron transfer, and energy equations discretized via the finite differences method. The study meticulously examines how variations in these parameters influence SOFC efficiency, providing new insights into optimal anode design. Our methodology involves simulating different anode configurations to pinpoint the key parameters that affect exergy efficiency, thereby minimizing the experimental costs and time associated with traditional approaches. The quantitative results of this study are significant. We found that an anode tortuosity of 5.5 and a porosity range of 0.05–0.1 optimize exergy efficiency, achieving a 15% improvement compared to conventional designs. Additionally, a mean pore radius between 15 and 20 µ m was identified as optimal for enhancing cell voltage. These findings elucidate the critical relationship between anode material properties and SOFC performance, offering a practical pathway to improving efficiency. This research provides a novel numerical approach to understanding and optimizing anode characteristics in SOFCs. By highlighting the importance of specific material properties, such as tortuosity and porosity, and demonstrating their impact on exergy efficiency, this study offers valuable guidance for future SOFC design and development. |
| doi_str_mv | 10.1155/2024/4928675 |
| format | Article |
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One major challenge in enhancing SOFC efficiency is reducing anode diffusion polarization, which can significantly hinder performance. This study addresses this issue by investigating the effects of anode tortuosity and porosity on the exergy efficiency of SOFCs. The novelty of this research lies in its comprehensive numerical model, which uniquely incorporates detailed material properties and their impact on SOFC performance—specifically focusing on anode tortuosity and porosity. Using advanced Multiphysics software, we developed a model that solves mass, electron transfer, and energy equations discretized via the finite differences method. The study meticulously examines how variations in these parameters influence SOFC efficiency, providing new insights into optimal anode design. Our methodology involves simulating different anode configurations to pinpoint the key parameters that affect exergy efficiency, thereby minimizing the experimental costs and time associated with traditional approaches. The quantitative results of this study are significant. We found that an anode tortuosity of 5.5 and a porosity range of 0.05–0.1 optimize exergy efficiency, achieving a 15% improvement compared to conventional designs. Additionally, a mean pore radius between 15 and 20 µ m was identified as optimal for enhancing cell voltage. These findings elucidate the critical relationship between anode material properties and SOFC performance, offering a practical pathway to improving efficiency. This research provides a novel numerical approach to understanding and optimizing anode characteristics in SOFCs. By highlighting the importance of specific material properties, such as tortuosity and porosity, and demonstrating their impact on exergy efficiency, this study offers valuable guidance for future SOFC design and development.</description><identifier>ISSN: 0363-907X</identifier><identifier>EISSN: 1099-114X</identifier><identifier>DOI: 10.1155/2024/4928675</identifier><language>eng</language><publisher>Bognor Regis: Hindawi Limited</publisher><subject>Anodes ; Anodic cleaning ; Anodic polarization ; Boundary conditions ; Cell anodes ; Clean energy ; Clean technology ; Composite materials ; Configuration management ; Efficiency ; Electric currents ; Electrode materials ; Electrode polarization ; Electrodes ; Electrolytes ; Electron transfer ; Energy ; Exergy ; Fuel cells ; Fuel technology ; Material properties ; Mathematical analysis ; Mathematical models ; Nanomaterials ; Numerical models ; Optimization ; Oxidoreductions ; Parameters ; Partial differential equations ; Porosity ; Scale (corrosion) ; Solid oxide fuel cells ; Thermodynamics ; Tortuosity</subject><ispartof>International journal of energy research, 2024-01, Vol.2024 (1)</ispartof><rights>Copyright © 2024 Khalid Zouhri et al. This is an open access article distributed under the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 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One major challenge in enhancing SOFC efficiency is reducing anode diffusion polarization, which can significantly hinder performance. This study addresses this issue by investigating the effects of anode tortuosity and porosity on the exergy efficiency of SOFCs. The novelty of this research lies in its comprehensive numerical model, which uniquely incorporates detailed material properties and their impact on SOFC performance—specifically focusing on anode tortuosity and porosity. Using advanced Multiphysics software, we developed a model that solves mass, electron transfer, and energy equations discretized via the finite differences method. The study meticulously examines how variations in these parameters influence SOFC efficiency, providing new insights into optimal anode design. Our methodology involves simulating different anode configurations to pinpoint the key parameters that affect exergy efficiency, thereby minimizing the experimental costs and time associated with traditional approaches. The quantitative results of this study are significant. We found that an anode tortuosity of 5.5 and a porosity range of 0.05–0.1 optimize exergy efficiency, achieving a 15% improvement compared to conventional designs. Additionally, a mean pore radius between 15 and 20 µ m was identified as optimal for enhancing cell voltage. These findings elucidate the critical relationship between anode material properties and SOFC performance, offering a practical pathway to improving efficiency. This research provides a novel numerical approach to understanding and optimizing anode characteristics in SOFCs. By highlighting the importance of specific material properties, such as tortuosity and porosity, and demonstrating their impact on exergy efficiency, this study offers valuable guidance for future SOFC design and development.</description><subject>Anodes</subject><subject>Anodic cleaning</subject><subject>Anodic polarization</subject><subject>Boundary conditions</subject><subject>Cell anodes</subject><subject>Clean energy</subject><subject>Clean technology</subject><subject>Composite materials</subject><subject>Configuration management</subject><subject>Efficiency</subject><subject>Electric currents</subject><subject>Electrode materials</subject><subject>Electrode polarization</subject><subject>Electrodes</subject><subject>Electrolytes</subject><subject>Electron transfer</subject><subject>Energy</subject><subject>Exergy</subject><subject>Fuel cells</subject><subject>Fuel technology</subject><subject>Material properties</subject><subject>Mathematical 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One major challenge in enhancing SOFC efficiency is reducing anode diffusion polarization, which can significantly hinder performance. This study addresses this issue by investigating the effects of anode tortuosity and porosity on the exergy efficiency of SOFCs. The novelty of this research lies in its comprehensive numerical model, which uniquely incorporates detailed material properties and their impact on SOFC performance—specifically focusing on anode tortuosity and porosity. Using advanced Multiphysics software, we developed a model that solves mass, electron transfer, and energy equations discretized via the finite differences method. The study meticulously examines how variations in these parameters influence SOFC efficiency, providing new insights into optimal anode design. Our methodology involves simulating different anode configurations to pinpoint the key parameters that affect exergy efficiency, thereby minimizing the experimental costs and time associated with traditional approaches. The quantitative results of this study are significant. We found that an anode tortuosity of 5.5 and a porosity range of 0.05–0.1 optimize exergy efficiency, achieving a 15% improvement compared to conventional designs. Additionally, a mean pore radius between 15 and 20 µ m was identified as optimal for enhancing cell voltage. These findings elucidate the critical relationship between anode material properties and SOFC performance, offering a practical pathway to improving efficiency. This research provides a novel numerical approach to understanding and optimizing anode characteristics in SOFCs. By highlighting the importance of specific material properties, such as tortuosity and porosity, and demonstrating their impact on exergy efficiency, this study offers valuable guidance for future SOFC design and development.</abstract><cop>Bognor Regis</cop><pub>Hindawi Limited</pub><doi>10.1155/2024/4928675</doi><orcidid>https://orcid.org/0000-0002-7567-0717</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Anodes Anodic cleaning Anodic polarization Boundary conditions Cell anodes Clean energy Clean technology Composite materials Configuration management Efficiency Electric currents Electrode materials Electrode polarization Electrodes Electrolytes Electron transfer Energy Exergy Fuel cells Fuel technology Material properties Mathematical analysis Mathematical models Nanomaterials Numerical models Optimization Oxidoreductions Parameters Partial differential equations Porosity Scale (corrosion) Solid oxide fuel cells Thermodynamics Tortuosity |
| title | Solid Oxide Fuel Cell Anode Porosity and Tortuosity Effect on the Exergy Efficiency |
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