Mathematical modeling of the coupled transport and electrochemical reactions in solid oxide steam electrolyzer for hydrogen production

Ni, Meng; Leung, Michael K.H.; Leung, Dennis Y.C.

doi:10.1016/j.electacta.2007.04.084

Cited by 94 publications

(57 citation statements)

References 45 publications

(79 reference statements)

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“…h act,a and h act,c are the activation overpotentials at the anode and cathode, respectively. h act,a and h act,c are assumed to vary linearly with current density as [38], (17) where J 0 H 2 ;i and J 0 CO;i are the exchange current densities for electrolysis of H 2 O and CO 2 , respectively. The subscript i (i ¼ a and c) means the anode and cathode, respectively.…”

Section: Electrochemical Modelmentioning

confidence: 99%

2D thermal modeling of a solid oxide electrolyzer cell (SOEC) for syngas production by H2O/CO2 co-electrolysis

2012

International Journal of Hydrogen Energy

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167

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Section: Electrochemical Modelmentioning

confidence: 99%

2D thermal modeling of a solid oxide electrolyzer cell (SOEC) for syngas production by H2O/CO2 co-electrolysis

2012

International Journal of Hydrogen Energy

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167

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“…Several studies have shown that the reaction rate is higher near the interface between the electrode and the electrolyte. Thus, the reaction domain is often treated as a boundary condition [9,10,13]. This assumption is discussed in this paper regarding the choice of the Butler-Volmer equation.…”

Section: Introductionmentioning

confidence: 99%

Theoretical considerations on the modelling of transport in a three-phase electrode and application to a proton conducting solid oxide electrolysis cell

Dumortier

Sánchez

Keddam

et al. 2012

International Journal of Hydrogen Energy

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Theoretical considerations on the modelling of transport in a three-phase electrode and application to a proton conducting solid oxide electrolysis cell. International Journal of Hydrogen Energy, Elsevier, 2012, 37 (16) The paper presents a complete numerical model for the prediction of mass and charge transfer inside electrolysis cells and fuel cells working at high temperature and using cermets as electrodes. It also discusses some assumptions taken in fuel cells or electrolysis cells modelling.I think that the problems dealt in this paper are in perfect match with the topics covered by the International Journal of Hydrogen Energy. Indeed many articles that were published in the journal served as a basis for this work.Meng Ni, from the University of Hong Kong, M.M Hussain, from the University of Waterloo and Anchasa Pramuanjaroenkija, from the University of Miami, would represent in my view relevant reviewers for this paper. As specialists in fuel cells and electrolysis cells modelling, they can rigorously evaluate the scientific content of this paper. Moreover, several assumptions they use for their models are discussed in the paper.I am fully available from the first of January to deal with the reports of the reviewers.I will be pleased to supply any further information should it be required.Yours sincerely, Mikael DumortierCover LetterDemonstration of continuity equations for mass and charge inside a cermet electrode *Manuscript Click here to view linked References Abstract

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“…Various materials have been developed to fabricate SOEC for hydrogen production by steam electrolysis [21][22][23]. Several mathematical models have been developed to predict the SOEC performance at various levels [24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

An electrochemical model for syngas production by co-electrolysis of H2O and CO2

2012

Journal of Power Sources

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163

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Co-electrolysis of CO 2 and H 2 O in a solid oxide electrolyzer cell (SOEC) offers a promising way for syngas production. In this study, an electrochemical model is developed to simulate the performance of an SOEC used for CO 2 /H 2 O co-electrolysis, considering the reversible water gas shift reaction (WGSR) in the cathode. The dusty gas model (DGM) is used to characterize the multi-component mass transport in the electrodes. The modeling results are compared with experimental data from the literature and good agreement is observed. Parametric simulations are performed to analyze the distributions of WGSR and gas composition in the electrode. A new method is proposed to quantify the contribution of WGSR to CO production by comparing the CO fluxes at the cathode-electrolyte interface and at the cathode surface. It is found that the reversible WGSR could contribute to CO production at a low operating potential but consume CO at a high operating potential. In addition, the contribution of WGSR to CO production also depends on the operating temperature and inlet gas composition.

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Mathematical modeling of the coupled transport and electrochemical reactions in solid oxide steam electrolyzer for hydrogen production

Cited by 94 publications

References 45 publications

2D thermal modeling of a solid oxide electrolyzer cell (SOEC) for syngas production by H2O/CO2 co-electrolysis

2D thermal modeling of a solid oxide electrolyzer cell (SOEC) for syngas production by H2O/CO2 co-electrolysis

Theoretical considerations on the modelling of transport in a three-phase electrode and application to a proton conducting solid oxide electrolysis cell

An electrochemical model for syngas production by co-electrolysis of H2O and CO2

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