Cell, stack and system modelling

Pianko‐Oprych, Paulina; Jaworski, Z.; Kendall, Kevin

doi:10.1016/b978-0-12-410453-2.00013-0

Cited by 3 publications

(3 citation statements)

References 123 publications

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“…Along with bringing higher operating costs and limiting the choice of material, this matter negatively influences thermochemical stability. In this regard, cell degradation at high operating temperatures is an important technical barrier to the commercialisation of SOFCs, leading to extra costs due to unexpected repair and maintenance [22,23]. Since SOFC scaling up uses repeat cells (so-called "scale-up by number-up"), a single component failure could lead to the failure of the whole stack.…”

Section: Fuel Cell Operatingmentioning

confidence: 99%

Recent Advances and Challenges in Thin-Film Fabrication Techniques for Low-Temperature Solid Oxide Fuel Cells

2023

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Solid oxide fuel cells (SOFCs) are amongst the most widely used renewable alternative energy systems with near-zero carbon emission, high efficiency, and environment-friendly features. However, the high operating temperature of SOFCs is still considered a major challenge due to several issues regarding the materials’ corrosion, unwanted reactions between layers, etc. Thus, low-temperature SOFCs (LT-SOFCs) have gained significant interest during the past decades. Despite the numerous advantages of LT-SOFCs, material selection for each layer is of great importance as the common materials have not shown a desirable performance so far. In addition to the selection of the materials, fabrication techniques have a great influence on the properties of the SOFCs. As SOFCs with thinner layers showed lower polarisation resistance, especially in the electrolyte layer, different thin-film fabrication methods have been employed, and their effect on the overall performance of SOFCs has been evaluated. In this review, we aim to discuss the past and recent progress on the materials and thin-film fabrication techniques used in LT-SOFCs.

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Section: Fuel Cell Operatingmentioning

confidence: 99%

Recent Advances and Challenges in Thin-Film Fabrication Techniques for Low-Temperature Solid Oxide Fuel Cells

2023

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“…In SOFC mode, the cell operating voltage can be calculated starting from the reversible potential of the cell and subtracting the activation, ohmic, and concentration losses, as shown by the Nernst' law [31] V…”

Section: Solid-oxide Cell Modelmentioning

confidence: 99%

Dynamic Simulation and Thermoeconomic Analysis of a Hybrid Renewable System Based on PV and Fuel Cell Coupled with Hydrogen Storage

et al. 2021

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The production of “green hydrogen” is currently one of the hottest topics in the field of renewable energy systems research. Hydrogen storage is also becoming more and more attractive as a flexible solution to mitigate the power fluctuations of solar energy systems. The most promising technology for electricity-to-hydrogen conversion, and vice versa, is the reversible solid-oxide cell (SOC). This device is still very expensive, but it exhibits excellent performance under dynamic operating conditions compared to the competing devices. This work presents the dynamic simulation of a prototypal renewable plant combining a 50 kW photovoltaic (PV) field with a 50 kW solid-oxide electrolyzer cell (SOEC) and a compressed hydrogen tank. The electricity is used to meet the energy demand of a dwelling located in the area of Campi Flegrei (Naples). The SOC efficiency is simulated by developing a mathematical model in MATLAB®. The model also calculates the cell operating temperature as a function of the input current. Once the optimal values of the operating parameters of the SOC are calculated, the model is integrated in the transient system simulation tool (TRNSYS) for dynamic analysis. Furthermore, this work presents a parametric analysis of the hydrogen storage system (HSS). The results of the energy and environmental analyses show that the proposed system can reach a primary energy saving by 70% and an amount of saved CO2 of 28 tons/year. Some possible future market scenarios are considered for the economic analysis. In the most realistic case, the optimal configuration shows a simple pay back lower than 10 years and a profit index of 46%.

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“…Para atingir maiores densidades de energia, várias unidades devem ser empilhadas em série. O contato elétrico entre duas pilhas unitárias adjacentes é promovido pelos interconectores, que também tem a função de separar e distribuir os gases combustível e oxidante no eletrodo durante a operação da PaCOS [3][4][5][6][7]. Nesse contexto, a escolha do material interconector deve ser feita de forma a garantir alguns requisitos básicos como baixo custo, boa condutividade elétrica e estabilidade química e estrutural nas condições de trabalho das PaCOS, além de ter que apresentar um coeficiente de expansão térmica compatível com os demais componentes da pilha [8][9][10].…”

Section: Introductionunclassified

Eletrodeposição de ligas Mn-Co em aço inoxidável ferrítico AISI 430 a partir da reciclagem de baterias íon-Li: aplicação em interconectores das PaCOS

Gonçalves¹,

Garcia²,

Tarôco³

et al. 2021

Matéria (Rio J.)

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RESUMO Um dos desafios atuais é a busca de materiais eficientes e de baixo custo para os componentes das Pilhas a Combustível de Óxido Sólido (PaCOS), já que estes dispositivos se destacam pela geração limpa de energia elétrica e alta eficiência. Dentre estes componentes está o interconector, nos quais o aço inoxidável ferrítico poderia ser utilizado na sua fabricação. No entanto revestimentos protetores são necessários para bloquear a volatilidade do cromo da superfície metálica do interconector nas condições de operação das PaCOS. Neste trabalho, os revestimentos foram obtidos a partir de soluções eletrolítica contendo Co2+ e Mn2+ provenientes de catodos de baterias de íon lítio (BIL’s) exauridas. Foram feitas eletrodeposições potenciostáticas com o objetivo de se obter ligas de cobalto e manganês sobre a superfície de amostras do aço AISI 430. Dados de eficiência de carga do processo foram calculados para otimização das amostras, e a condição de pH mais ácido (pH=3) mostrou-se menos eficiente. Contudo, o filme apresentou microestrutura homogênea, menos porosa e constituída por uma camada interna de (Mn, Cr)2O3 e externa de MnCo2O4, capaz de bloquear a perda do Cr, conforme mostraram as análises de DRX, MEV e EED. Já para o pH menos ácido (pH=3,5), não foi identificada a presença do Mn na composição do depósito, e o revestimento formado de Co3O4 não se mostrou capaz de bloquear a perda de cromo por volatilidade.

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Cell, stack and system modelling

Cited by 3 publications

References 123 publications

Recent Advances and Challenges in Thin-Film Fabrication Techniques for Low-Temperature Solid Oxide Fuel Cells

Recent Advances and Challenges in Thin-Film Fabrication Techniques for Low-Temperature Solid Oxide Fuel Cells

Dynamic Simulation and Thermoeconomic Analysis of a Hybrid Renewable System Based on PV and Fuel Cell Coupled with Hydrogen Storage

Eletrodeposição de ligas Mn-Co em aço inoxidável ferrítico AISI 430 a partir da reciclagem de baterias íon-Li: aplicação em interconectores das PaCOS

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