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The influence of pore radii on the PR of the PCT at fixed porous fraction ε = 0.2 and j = 60 (a), 150 (b) and 300 (c) A·m−2. The current density is mentioned in each figure. The arrow represents an increment of pore radius: R1 = 0.5, 0.7, 1.5, 3 and 5 μm. All other parameters are presented in Table 1.
