Research Article
Structural and Electrochemical Properties of Lanthanum Silicate Apatites La10Si6−x−0.2AlxZn0.2O27−δ for Solid Oxide Fuel Cells (SOFCs)
Figure 5
A.C. impedance plots of La10Si5.6Al0.2Zn0.2O26.7 (left) and La10Si5.4Al0.4Zn0.2O26.6 (right) at intermediate operating temperature of 800°C and the equivalent circuit.