A proton conducting solid oxide fuel cell---implementation of the reduced order model in available software and verification based on experimental data

Milewski, Jarosław; Szczęśniak, Arkadiusz; Szabłowski, Łukasz

doi:10.1016/j.jpowsour.2021.229948

Cited by 20 publications

(7 citation statements)

References 44 publications

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“…2S), and permitted to compute one polarization point in 5 min on a laptop with 32 Gb ram (vs 10 min of the previous version). Nonetheless, this time scale did not allow to fit the unknown parameters by means of regressive algorithms (reduced cell models should instead be applied to this scope 35 ), and simple expost minimization of the squared errors was used. The impedance problem was solved in the frequency range, after linearization of the model equations around the steady state solution and conversion from the time-based domain to the frequency-based domain.…”

Section: Modelmentioning

confidence: 99%

Experimental and Model Investigation of a Solid Oxide Fuel Cell Operated Under Low Fuel Flow Rate

Neri,

Cammarata,

Donazzi

2023

J. Electrochem. Soc.

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A state-of-the-art anode-supported Ni-YSZ/YSZ/GSC/LSC SOFC with 16 cm2 cathode area was tested at low anodic flow rate (6.25 Ncc min−1 cm−2) and large excess of air (93.75 Ncm3 min−1 cm−2). These conditions are typical of stacks, where high H2 utilization is targeted, but are uncommon in single cell testing. H2-based mixtures were supplied between 550 °C and 750 °C, varying the partial pressure of H2 (between 93% and 21% with 7% H2O mol/mol) and H2O (between 10% and 50% H2O with 50% H2). I/V and EIS measurements were collected and analyzed with a 1D+1D model of a SOFC with rectangular duct interconnectors. At 750 °C and 93% H2, 58% fuel utilization was obtained, which raised to 81% at 21% H2, driving the SOFC under internal diffusion control. The model analysis confirmed that nearly-isothermal conditions were retained thanks to efficient heat dissipation, and that air acted as a coolant. During testing, the contact resistance grew to 0.16 Ω cm2 at 750 °C, limiting the SOFC’s performance to a maximum power density of 340 W cm−2 with 7% humidified H2. The kinetic parameters of the anodic reaction were derived by fitting, finding a positive order for H2 (+0.9), and a negative order for H2O (−0.58).

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Section: Modelmentioning

confidence: 99%

Experimental and Model Investigation of a Solid Oxide Fuel Cell Operated Under Low Fuel Flow Rate

Neri,

Cammarata,

Donazzi

2023

J. Electrochem. Soc.

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“…Ammonia usage analysis in the electrolyte-supported SOFC [48] Ion transition analysis in SOFC [64] Ion transition analysis in SOFC [64] Analyzing the mechanistic model [67] Flat tubular SOFC modeling [68] Flat tubular SOFC modeling [68] Analysis of the flame characteristics for performance improvement of the SOFC model [69] Analysis of the electrochemistry and electrochemical models for SOFC [70] MATLAB Tubular SOFC performance analysis [71] Tubular SOFC performance analysis [71] Analysis of the reduced order H-SOFC [72] MATLAB offers various numerical computing and data visualization capabilities, supported by an extensive library of functions and toolboxes. It has a user-friendly interface and a strong presence in academia and industry.…”

Section: Research Gap and Future Prospectsmentioning

confidence: 99%

Numerical Modeling of Ammonia-Fueled Protonic-Ion Conducting Electrolyte-Supported Solid Oxide Fuel Cell (H-SOFC): A Brief Review

Rahman,

Abdalla,

Omeiza

et al. 2023

Processes

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Solid oxide fuel cells with protonic ion conducting electrolytes (H-SOFCs) are recognized and anticipated as eco-friendly electrochemical devices fueled with several kinds of fuels. One distinct feature of SOFCs that makes them different from others is fuel flexibility. Ammonia is a colorless gas with a compound of nitrogen and hydrogen with a distinct strong smell at room temperature. It is easily dissolved in water and is a great absorbent. Ammonia plays a vital role as a caustic for its alkaline characteristics. Nowadays, ammonia is being used as a hydrogen carrier because it has carbon-free molecules and prosperous physical properties with transportation characteristics, distribution options, and storage capacity. Using ammonia as a fuel in H-SOFCs has the advantage of its ammonia cracking attributes and quality of being easily separated from generated steam. Moreover, toxic NOx gases are not formed in the anode while using ammonia as fuel in H-SOFCs. Recently, various numerical studies have been performed to comprehend the electrochemical and physical phenomena of H-SOFCs in order to develop a feasible and optimized design under different operating conditions rather than doing costlier experimentation. The aim of this concisely reviewed article is to present the current status of ammonia-fueled H-SOFC numerical modeling and the application of numerical modeling in ammonia-fueled H-SOFC geometrical shape optimization, which is still more desirable than traditional SOFCs.

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“…In addition, the actual voltage of the stack can also be defined based on the I-V curve [8,11,13,21,33,34] The cell efficiency may be estimated as [17]:…”

Section: Parameters Valuementioning

confidence: 99%

Thermal Evaluation of a Novel Integrated System Based on Solid Oxide Fuel Cells and Combined Heat and Power Production Using Ammonia as Fuel

Duong

Ryu

Jung³

et al. 2022

Applied Sciences

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A novel integrated system based on solid oxide fuel cells (SOFCs), a gas turbine (GT), the steam Rankine cycle (SRC), the Kalina cycle (KC), and the organic Rankine cycle (ORC) is proposed to achieve cascade energy utilization. Mathematical models are introduced and system performance is analyzed using energy and exergy methods. The first and second laws of thermodynamics are used to analyze the system thermodynamically. In addition, exergy destruction and losses of the various integrated subsystems are calculated. The energy and exergy efficiencies of the multigeneration system are estimated to be 60.4% and 57.3%, respectively. In addition, the hot water produced during the waste heat recovery process may also be used for accommodating seafarers on ships. Sequential optimization is developed to optimize the operating conditions of the integrated system to achieve the required power output. A comprehensive parametric study is conducted to investigate the effect of varying the current densities of the fuel cell and working fluid of the ORC on the overall performance of the combined system and subsystems. The working performance of five working fluids for the ORC as candidates—R134a, R600, R601, R152a, and R124—is compared. R152a, which provides 71.23 kW of power output, and energy and exergy efficiencies of 22.49% and 42.76%, respectively, is selected as the best thermodynamic performance for the ORC.

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A proton conducting solid oxide fuel cell---implementation of the reduced order model in available software and verification based on experimental data

Cited by 20 publications

References 44 publications

Experimental and Model Investigation of a Solid Oxide Fuel Cell Operated Under Low Fuel Flow Rate

Experimental and Model Investigation of a Solid Oxide Fuel Cell Operated Under Low Fuel Flow Rate

Numerical Modeling of Ammonia-Fueled Protonic-Ion Conducting Electrolyte-Supported Solid Oxide Fuel Cell (H-SOFC): A Brief Review

Thermal Evaluation of a Novel Integrated System Based on Solid Oxide Fuel Cells and Combined Heat and Power Production Using Ammonia as Fuel

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