The classical 1D continuum model of oxygen exchange in a porous mixed conductor (bulk path) is presented in terms of Linear Sweep Voltammetry (LSV) and Cyclic Voltammetry (CV). We show that, from a formal point of view, it corresponds to an insertion, diffusion and chemical reaction mechanism. Some general rules for LSV/CV curves are established. Using a dimensionless description, we evidence eight different limiting behaviors of the electrochemical model, which depend on four dimensionless parameters. For an almost full insertion level at equilibrium, these parameters can be reduced to only two, i.e. the dimensionless electrode thickness L and the dimensionless chemical rate constant λ. We show that the resulting zone diagram, plotted using the representation log L versus log λ, is useful to predict the possible sequences of model behaviors as a function of the potential sweep rate and the electrode thickness. This theoretical analysis is applied to a porous LSCF oxygen electrode under air at high temperature.

用线性扫描伏安法（LSV）和循环伏安法（CV）提出了多孔混合导体（体通道）中氧交换的经典一维连续介质模型。从形式上看，我们表明它对应于插入，扩散和化学反应机理。建立了LSV / CV曲线的一些通用规则。使用无量纲的描述，我们证明了电化学模型的八种不同的极限行为，这取决于四个无量纲的参数。对于平衡时几乎完全的插入水平，可以将这些参数减小为仅两个，即无因次电极厚度L和无因次化学速率常数λ。我们显示了使用表示日志L绘制的结果区域图与logλ的关系，可用来预测模型行为的可能顺序，该顺序取决于电势扫描速率和电极厚度。该理论分析适用于高温空气中的多孔LSCF氧电极。