Dynamic simulation of a reversible solid oxide cell system for efficient H2 production and power generation

Sun, Yuting; Tang, Qian; Zhu, Jingdong; Zheng, Nan; Han, Yu; Xiao, Gang; Ni, Meng; Xu, Haoran

doi:10.1016/j.energy.2022.125725

Cited by 12 publications

(3 citation statements)

References 29 publications

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“…Electrolytes must match other materials during cell operation to avoid issues such as detachment or cracking due to thermal expansion mismatch. [25] Currently, the most commonly used electrolyte material in RSOC is yttria-stabilized zirconia (YSZ), known for its exceptional oxygen ion conductivity and mechanical strength. However, it's important to note that while the melting point of ZrO 2 is approximately 2973 K, it undergoes a transition from monoclinic to tetragonal crystal structures around 1373 K and a cubic fluorite-form phase transition around 2643 K, potentially leading to significant volume changes.…”

Section: Electrolytementioning

confidence: 99%

“…Finally, the matching of thermal expansion coefficients is another critical factor. Electrolytes must match other materials during cell operation to avoid issues such as detachment or cracking due to thermal expansion mismatch [25] . Currently, the most commonly used electrolyte material in RSOC is yttria‐stabilized zirconia (YSZ), known for its exceptional oxygen ion conductivity and mechanical strength.…”

Section: Research Progress Of Rsoc Electrode Materialsmentioning

confidence: 99%

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Recent Development in Reversible Solid Oxide Fuel Cells: Theory, Integration and Prospective

Yang,

Lei,

Huang

et al. 2023

ChemElectroChem

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Reversible solid oxide fuel cell (RSOC) has gained widespread attention due to their potential for high efficiency in implementing multi‐energy distributed systems. When high power demand is required, RSOC can operate in the solid oxide fuel cell (SOFC) mode, directly converting the chemical energy from hydrogen or other renewable fuels into electricity. When excess electricity is available, RSOC can operate in the solid oxide electrolysis cell (SOEC) mode, producing fuels through the electrolysis of water or co‐electrolysis of water and carbon dioxide. The reversible operation of RSOC enables the direct conversion between chemical energy and electricity, offering a promising solution for clean and sustainable energy with low cost and high round‐trip efficiency. This paper introduces the research background and working principles of RSOC, provides a detailed overview of the current research status of electrolyte, fuel electrode, and oxygen electrode materials, discusses the optimization design of RSOC stacks and energy utilization strategies in the system. In addition, the future development directions of RSOC were also explored, which is of significant importance for the commercialization of RSOC.

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Section: Electrolytementioning

confidence: 99%

Section: Research Progress Of Rsoc Electrode Materialsmentioning

confidence: 99%

Recent Development in Reversible Solid Oxide Fuel Cells: Theory, Integration and Prospective

Yang,

Lei,

Huang

et al. 2023

ChemElectroChem

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“…SOCs can operate reversibly in both electrolysis and fuel cell modes 3 , 4 . In electrolysis mode, solid oxide electrolysis cells (SOECs) can convert the intermittent solar 5 and wind energy 6 to the chemical energy of alternative fuels such as hydrogen and syngas 7 – 10 . In fuel cell mode, solid oxide fuel cells (SOFCs) can generate power from fuels previously produced by SOECs 11 , 12 .…”

Section: Introductionmentioning

confidence: 99%

Discovering two general characteristic times of transient responses in solid oxide cells

Liang,

Wang,

Ren

et al. 2024

Nat Commun

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A comprehensive understanding of the transient characteristics in solid oxide cells (SOCs) is crucial for advancing SOC technology in renewable energy storage and conversion. However, general formulas describing the relationship between SOC transients and multiple parameters remain elusive. Through comprehensive numerical analysis, we find that the thermal and gaseous response times of SOCs upon rapid electrical variations are on the order of two characteristic times (τh and τm), respectively. The gaseous response time is approximately 1τm, and the thermal response time aligns with roughly 2τh. These characteristic times represent the overall heat and mass transfer rates within the cell, and their mathematical relationships with various SOC design and operating parameters are revealed. Validation of τh and τm is achieved through comparison with an in-house experiment and existing literature data, achieving the same order of magnitude for a wide range of electrochemical cells, showcasing their potential use for characterizing transient behaviors in a wide range of electrochemical cells. Moreover, two examples are presented to demonstrate how these characteristic times can streamline SOC design and control without the need for complex numerical simulations, thus offering valuable insights and tools for enhancing the efficiency and durability of electrochemical cells.

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Performance and Stress Analysis of Flat-Tubular Solid Oxide Fuel Cells Fueled with Methane and Hydrogen

Yu,

Guo,

Pan

et al. 2024

Acta Mech. Solida Sin.

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Dynamic simulation of a reversible solid oxide cell system for efficient H2 production and power generation

Cited by 12 publications

References 29 publications

Recent Development in Reversible Solid Oxide Fuel Cells: Theory, Integration and Prospective

Recent Development in Reversible Solid Oxide Fuel Cells: Theory, Integration and Prospective

Discovering two general characteristic times of transient responses in solid oxide cells

Performance and Stress Analysis of Flat-Tubular Solid Oxide Fuel Cells Fueled with Methane and Hydrogen

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