Structural and Electrochemical Properties of Lanthanum Silicate Apatites La₁₀Si_6−x−0.2Al_xZn_0.2O_27−δ for Solid Oxide Fuel Cells (SOFCs)

Figure 3

SEM images (cross-sectional) of La₁₀Si_5.6Al_0.2Zn_0.2O_26.7 (left) and La₁₀Si_5.4Al_0.4Zn_0.2O_26.6 (right) powders sintered at 1600°C for 8 hours in air.

(a)

(b)