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- W2079742677 abstract "In solid oxide fuel cells, the measured cell resistance is usually higher than the calculated value based on the electrolyte thickness. Such a phenomenon is called a constriction resistance and can be represented by a cell:electrolyte resistivity ratio, λ = ρcell:ρelectrolyte, where ρcell = Rcell/δ (δ is the electrolyte thickness). As ρelectrolyte is a property of the electrolyte and is not affected by the electrolyte thickness, the change in λ with electrolyte thickness is an indication of the dependence of the constriction effect on the electrolyte thickness. In this study, the relationship between cell resistivity and the thickness of a yttria-stabilized zirconia Y2O3–ZrO2 (YSZ) electrolyte is investigated. The ρcell increases with decrease in electrolyte thickness and can be expressed as followsρcell=A0expEaRT−B0δexpEbRT This empirical relationship is valid when 0 ≤ δ ≤ δ* where δ* is the electrolyte thickness when ρcell = ρelectrolyte (i.e., λ = 1). The constriction effect depends significantly on the electrolyte thickness and the electrocatalytic activities of the electrodes, as well as on the operating temperature. The validity of the relationship is discussed." @default.
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- W2079742677 date "2008-09-01" @default.
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- W2079742677 title "Dependence of cell resistivity on electrolyte thickness in solid oxide fuel cells" @default.
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- W2079742677 doi "https://doi.org/10.1016/j.jpowsour.2008.04.095" @default.
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