Figure 4From: Triple-phase boundary and power density enhancement in thin solid oxide fuel cells by controlled etching of the nickel anodeSurface SEM micrographs from the nickel side of LSCO/YSZ/Ni cells after controlled etching on the nickel anode. (a) Sample after wet etching, (b) sample after electrochemical etching, (c) wet-etched sample after testing at 550°C, and (d) electrochemically etched sample after testing at 550°C.Back to article page