Structural and electrical study of nanocomposite Fe
 0.
 <scp>
 2
 Ni0
 0
 </scp>
 .
 <scp>
 3
 Cu
 0
 </scp>
 .5
 anode with effect of graphene oxide (
 <scp>GO</scp>
 ) for low‐temperature
 <scp>SOFCs</scp>

Ahmad, Khalil; Abbas, Ghazanfar; Ahmad, Muhammad

doi:10.1002/er.8360

Intl J of Energy Research

2022

DOI: 10.1002/er.8360

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Structural and electrical study of nanocomposite Fe _0. ₂ Ni0 ₀ _. ₃ Cu ₀ _.5 anode with effect of graphene oxide ( GO ) for low‐temperature SOFCs

Khalil Ahmad

Ghazanfar Abbas

Muhammad Ahmad

Abstract: Solid oxide fuel cell (SOFC) found to be promising alternative energy conver-

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Cited by 2 publications

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Solid Oxide Fuel Cell Anode Porosity and Tortuosity Effect on the Exergy Efficiency

Zouhri,

Mohamed,

Nulph

et al. 2024

International Journal of Energy Research

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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 µm 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.

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Solid Oxide Fuel Cell Anode Porosity and Tortuosity Effect on the Exergy Efficiency

Zouhri,

Mohamed,

Nulph

et al. 2024

International Journal of Energy Research

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Synergistic Electrochemical Properties of Graphene Incorporated LCZ-Oxide Cathode for Low Temperature Solid Oxide Fuel Cell

Ahmad

et al. 2023

Crystals

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Mixed metallic oxides are getting increasing attention as novel electrode materials for energy conversion devices. However, low mixed ionic-electronic conductivity and high operating temperature hamper the practical applications of these devices. This study reports an effective strategy to improve the conductivity and performance of the fuel cell at low temperature by partially incorporating graphene in the Li0.1Cu0.2Zn0.7-oxide (LCZ) composite. The proposed cathode material is synthesized via the cost effective conventional solid-state route. Graphene incorporated LCZ shows excellent performance, which is attributed to the favorable charge transport paths offering low area-specific resistance. An X-ray diffractometer (XRD) and scanning electron microscope (SEM) are employed for microstructural and surface morphological analyses, respectively. Electrical conductivities of all the materials are determined by the DC four probe method, and interestingly, LCZ-1.5% graphene exhibits an excellent conductivity of 3.5 S/cm in air atmosphere at a temperature of 450 °C with a minimum value of 0.057 Ωcm2 area-specific resistance (ASR) that demonstrates significantly good performance. Moreover, the three-layer fuel cell device is fabricated using sodium carbonated Sm0.2Ce0.8O (NSDC) as an electrolyte, which can operate at low temperatures exhibiting open circuit voltage 0.95 V and shows a peak power density, i.e., 267.5 mW/cm2 with hydrogen as the fuel.

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Structural and electrical study of nanocomposite Fe _0. ₂ Ni0 ₀ _. ₃ Cu ₀ _.5 anode with effect of graphene oxide ( GO ) for low‐temperature SOFCs

Abstract: Solid oxide fuel cell (SOFC) found to be promising alternative energy conver-

Cited by 2 publications

References 70 publications

Solid Oxide Fuel Cell Anode Porosity and Tortuosity Effect on the Exergy Efficiency

Solid Oxide Fuel Cell Anode Porosity and Tortuosity Effect on the Exergy Efficiency

Synergistic Electrochemical Properties of Graphene Incorporated LCZ-Oxide Cathode for Low Temperature Solid Oxide Fuel Cell

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Structural and electrical study of nanocomposite Fe 0. 2 Ni0 0 . 3 Cu 0 .5 anode with effect of graphene oxide ( GO ) for low‐temperature SOFCs

Abstract: Solid oxide fuel cell (SOFC) found to be promising alternative energy conver-

Cited by 2 publications

References 70 publications

Solid Oxide Fuel Cell Anode Porosity and Tortuosity Effect on the Exergy Efficiency

Solid Oxide Fuel Cell Anode Porosity and Tortuosity Effect on the Exergy Efficiency

Synergistic Electrochemical Properties of Graphene Incorporated LCZ-Oxide Cathode for Low Temperature Solid Oxide Fuel Cell

Contact Info

Product

Resources

About

Structural and electrical study of nanocomposite Fe _0. ₂ Ni0 ₀ _. ₃ Cu ₀ _.5 anode with effect of graphene oxide ( GO ) for low‐temperature SOFCs