An analytical model for solid oxide fuel cells with bi-layer electrolyte

Shen, Shuanglin; Guo, Liejin; Liu, Hongtan

doi:10.1016/j.ijhydene.2012.11.084

Cited by 22 publications

(17 citation statements)

References 24 publications

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“…The electronic conductivity in this model is assumed to obey 1/n power law of oxygen partial pressure where n = -4 while the ionic conductivity is constant for the electrolyte. Thus [13,14],…”

Section: Model Equationsmentioning

confidence: 95%

“…Using the species concentration equations developed by Shen et al [13,14], the following expressions for ionic and electronic current densities can be found by applying transport equations:…”

Section: Model Equationsmentioning

confidence: 99%

“…where t is the total thicknesses of the electrolyte (both electrolyte 1 and electrolyte 2). The equivalent ionic conductivity is defined as [13][14][15]…”

Section: Model Equationsmentioning

confidence: 99%

“…Vi (17) The distribution of the oxygen partial pressure across the bi-layer electrolyte is given as [13][14][15]…”

Section: Model Equationsmentioning

confidence: 99%

“…Marques and Navarro [11,12] have studied the performance of SOFCs using bi-layer electrolyte by an electrochemical permeability model. Shen et al [13] have developed an analytical model for SOFC, based on the Nernst Planck equation. The authors have studied the variation of the interfacial oxygen pressure in the bi-layer electrolyte as a function of YSZ thickness and its effect on the performance of SOFC.…”

Section: Introductionmentioning

confidence: 99%

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Modelling the leakage current in a solid oxide fuel cell with bi-layer electrolyte

Krishnamurthy

Ramakrishnan

2020

J. Electrochem. Sci. Eng.

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<p class="PaperAbstract">A mathematical model is developed to study the leakage current in a solid oxide fuel cell (SOFC) with a bi-layer electrolyte. The model predicts the variation of leakage current and power density with various design and operating factors of SOFC, namely thickness of the bi-layer electrolyte, operating temperature and operating cell voltage. The interfacial oxygen pressure in SOFC is also studied as a function of the thickness of YSZ layer. Modelling results are compared with experimental data and found to compare well.</p>

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Section: Model Equationsmentioning

confidence: 95%

Section: Model Equationsmentioning

confidence: 99%

“…where t is the total thicknesses of the electrolyte (both electrolyte 1 and electrolyte 2). The equivalent ionic conductivity is defined as [13][14][15]…”

Section: Model Equationsmentioning

confidence: 99%

“…Vi (17) The distribution of the oxygen partial pressure across the bi-layer electrolyte is given as [13][14][15]…”

Section: Model Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modelling the leakage current in a solid oxide fuel cell with bi-layer electrolyte

Krishnamurthy

Ramakrishnan

2020

J. Electrochem. Sci. Eng.

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Progress Report on Proton Conducting Solid Oxide Electrolysis Cells

Lei

Zhang

Yuan

et al. 2019

Adv Funct Materials

152

114

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The proton-conducting solid oxide electrolysis cell (H-SOEC) is a promising device that converts electrical energy to chemical energy. H-SOECs have been actively studied in the past few years, due to their advantages over oxygen-ion-conducting solid oxide electrolysis cells (O-SOECs), such as lower operation temperature, relatively lower activation energy, and easier gas separation. A critical overview of recent progress in H-SOECs is presented, focusing particularly on the period from 2014-2018. This review focuses on three aspects of H-SOECs, namely the materials, modeling and current leakage in proton conducting oxide electrolytes. Specifically, the current leakage in proton conducting oxides, which is often neglected, leads to two problems in the studies of H-SOECs. One is the distortion of the electrochemical impedance spectra (EIS) and the other is low faradaic efficiency of electrolysis. Based on the comprehensive and critical discussion in these three sections, challenges in the development of H-SOECs are highlighted and prospective research in H-SOECs is outlined.Received: ((will be filled in by the editorial staff))Revised: ((will be filled in by the editorial staff))

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Multiscale model for solid oxide fuel cell with electrode containing mixed conducting material

et al. 2015

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Solid oxide fuel cells (SOFCs) with electrodes that contain mixed conducting materials usually show very different relationships among microstructure parameters, effective electrode characteristics, and detailed working processes from conventional ones. A new multiscale model for SOFCs using mixed conducting materials, such as LSCF or BSCF, was developed. It consisted of a generalized percolation micromodel to obtain the electrode properties from microstructure parameters and a multiphysics single cell model to relate these properties to performance details. Various constraint relationships between the activation overpotential expressions and electric boundaries for SOFC models were collected by analyzing the local electrochemical equilibrium. Finally, taking a typical LSCF‐SDC/SDC/Ni‐SDC intermediate temperature SOFC as an example, the application of the multiscale model was illustrated. The accuracy of the models was verified by fitting 25 experimental I‐V curves reported in literature with a few adjustable parameters; additionally, and several conclusions were drawn from the analysis of simulation results. © 2015 American Institute of Chemical Engineers AIChE J, 61: 3786–3803, 2015

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An analytical model for solid oxide fuel cells with bi-layer electrolyte

Cited by 22 publications

References 24 publications

Modelling the leakage current in a solid oxide fuel cell with bi-layer electrolyte

Modelling the leakage current in a solid oxide fuel cell with bi-layer electrolyte

Progress Report on Proton Conducting Solid Oxide Electrolysis Cells

Multiscale model for solid oxide fuel cell with electrode containing mixed conducting material

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