Fig. 4: Local reaction rate and O2 concentration in flat and grooved electrodes. | Nature Energy

Fig. 4: Local reaction rate and O2 concentration in flat and grooved electrodes.

From: Grooved electrodes for high-power-density fuel cells

Fig. 4

a, b, Multiphysics modelling of flat and grooved electrodes (1 µm/3 µm): two-dimensional contour plots of the iORR at 0.7 V (a) and the O2 concentration distribution \(({\mathrm{C}}_{{\mathrm{O}_{2}}}/{\mathrm{C}}_{{\mathrm{O}_{2,{\mathrm{max}}}}})\) at 1.0 A cm−2 (b), with the arrows indicating the direction of O2 diffusion.

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