Figure 6

High magnification SEM micrographs of, (a) an uncoated HSR-Pt10Ir electrode, and, (b) ALD-coated HSR-Pt10Ir electrode; (c) Focused ion beam cross section of the masked HSR-Pt10Ir electrode showing the uncoated region (left) versus ALD-coated region (right) separated by the yellow dashed line.