Three-dimensional modeling of performance degradation of planar SOFC with phosphine exposure

Sezer, Hayri; Mason, Jeffrey T.; Yang, Tao

doi:10.1016/j.ijhydene.2020.11.176

Cited by 25 publications

(13 citation statements)

References 40 publications

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“…To increase overall output/input voltage, cells, interconnects and seals are precisely assembled into stacks [ 7 , 8 ]. The seals can prevent gas mixing in the anode and cathode to ensure the stable operation of the stack.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Long-Term Stability of Vermiculite Seals for Reversible Solid Oxide Cell

et al. 2023

Molecules

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A reversible solid oxide cell (RSOC) integrating solid oxide fuel (SOFC) and a solid oxide electrolysis cell (SOEC) usually utilizes compressive seals. In this work, the vermiculite seals of various thickness and compressive load during thermal cycles and long-term operation were investigated. The leakage rates of seals were gradually increased with increasing thickness and input gas pressure. The thinner seals had good sealing performance. The compressive load was carried out at thinner seals, the possible holes were squeezed, and finally the leakage rates were lower. With a fixed input gas pressure of 1 psi, 2 psi, and 3 psi, the leakage rates of 0.50 mm vermiculite remained at around 0.009 sccm/cm, 0.017 sccm/cm and 0.028 sccm/cm during twenty thermal cycles, while the leakage rates remained at around 0.011 sccm/cm for about 240 h. Simultaneously, elemental diffusions between seals and components were limited, implying good compatibility. Furthermore, the open circuit voltage (OCV) remained at around 1.04 V during 17 thermal cycles, which is close to Nernst potentials. The stack performance confirmed that the vermiculite seals can meet the structural support and sealing requirements. Therefore, the vermiculite shows good promise for application in stacks during thermal cycles and long-term operation.

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Section: Introductionmentioning

confidence: 99%

Investigation on Long-Term Stability of Vermiculite Seals for Reversible Solid Oxide Cell

et al. 2023

Molecules

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“…Hayri et al [29] develop a three-dimensional model to predict the degradation level of planar SOFC when fueled with coal syn-gas. The developed model has been calibrated with the experimental work.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic sensitivity analysis of SOFC integrated with blade cooled gas turbine hybrid cycle

Choudhary

Verma

SAHU³

et al. 2023

Journal of Thermal Engineering

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In the area of clean energy production along with higher efficiency, integrated combine power system, specifically gas turbine (GT) cycle with solid oxide fuel (SOFC) system, is gaining the attention of researchers. Thermodynamic modeling for the SOFC-GT hybrid cycle has been presented in this paper. For the proposed hybrid cycle, a high-temperature SOFC has successfully integrated with the recuperated-blade cooled gas turbine cycle. The gas turbine outlet waste heat has perfectly utilized the recuperator to power the fuel cell system. However, to maintain the temperature of the gas turbine blade within the permissible limit, air–film blade cooling scheme has been used. The SOFC-GT hybrid cycle has been operated under steady-state conditions, and a developed MATLAB program has been used to solve the governing equations for the components of the hybrid cycle. The impact of main operating parameters such as the temperature intake turbine (TIT), compression ratio (rpc), fuel utilization ratio (UF), and recirculation ratio are examined. From the obtained result, it can be revealed that the integration of the SOFC has seen significant improves overall hybrid cycle efficiency. The performance of fuel cell (SOFC) increases notably as the level of recuperation increases. To check the influence of main operating parameters, a sensitivity analysis has been performed for the hybrid cycle, and the maximum efficiency of 73% has been achieved. Moreover, to extend this research, an exclusive performance map has been plotted for power plant designers.

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“…The main work focused on correlating the governing equations and the dimensionless parameters to physicochemical performance parameters such as current density, power density, and gas consumption. Sezer et al 28 established a 3D model to predict the degradation of SOFC anode performance under the influences of pollutants in coal synthesis gas and analyzed the influences of pollutants on current and temperature distributions. Besides, based on the establishment of a heterogeneous model, local impedance spectra evolutions simulated were applied to investigate the location-dependent degradation phenomena to clarify detailed degradation mechanisms.…”

Section: Introductionmentioning

confidence: 99%

A novel multi-physics coupled heterogeneous single-cell numerical model for solid oxide fuel cell based on 3D microstructure reconstructions

Zhong

Jiao

2022

Energy Environ. Sci.

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Three-dimensional modeling of performance degradation of planar SOFC with phosphine exposure

Cited by 25 publications

References 40 publications

Investigation on Long-Term Stability of Vermiculite Seals for Reversible Solid Oxide Cell

Investigation on Long-Term Stability of Vermiculite Seals for Reversible Solid Oxide Cell

Thermodynamic sensitivity analysis of SOFC integrated with blade cooled gas turbine hybrid cycle

A novel multi-physics coupled heterogeneous single-cell numerical model for solid oxide fuel cell based on 3D microstructure reconstructions

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