Model development for a SOFC button cell using H2S as fuel

Multidimensional flow, thermal, and chemical behavior in solid-oxide fuel cell button cells

“…The model reported herein relaxes all of these assumptions, and thus contributes to the continuing development of high level CFD software. Several two-and three-dimensional models have been published [2][3][4][5][6][7] that specifically consider button-cell performance. Janardhanan and Deutschmann [3] and Shi et al [5,6] modeled axisymmetric (two-dimensional) button cells, but assumed isothermal conditions.…”

Fundamentals of electro- and thermochemistry in the anode of solid-oxide fuel cells with hydrocarbon and syngas fuels

“…Despite the observed performance drop potentially caused by the blockage of surface reactive sites by sulfur species, the cell still has the ability to electrochemically oxidize H 2 S, [165][166][167][168] which demonstrates the possibility of using it as a fuel.…”

“…165 There is a general lack of knowledge regarding the oxidation mechanism for H 2 S, which is certain to be catalystdependent. Monder et al 166 developed a hierarchy of models to describe the performance of a single H 2 S-fueled SOFC button cell used previously in experiments. 167 The model objectives were to estimate kinetic parameters associated with electrochemical reactions coupled with mass transfer.…”

Electrochemical Modeling and Performance Assessment of H2S/Air Solid Oxide Fuel Cell

“…The performance of the proposed cell is assessed by evaluating the energy, exergy, and voltage efficiencies. The following reasonable assumptions are used in developing the model: [20,22] 1) A 1D electrochemical model is suitable for the planar SOFC singleunit cell; 2) The cell operation is at a steady state; 3) There is no temperature variation across the porous anode and cathode electrodes; 4) All electrochemical reactions occur at the electrode-electrolyte interface; 5) Change in kinetic energy and potential energy or exergy is negligible; and 6) All models presented are isothermal.…”

“…The studies concluded that H 2 S/air SOFC produces more SO 2 at high fuel utilization. [ 16,20,23,24 ]…”