Effect of Doped Manganese Oxide on the Properties of Ce0.8Gd0.2O2-δ Solid Electrolyte
The effects of Ce0.8Gd0.2O2-δ (CGO) doped manganese oxide as sintering additive on density and conductivity were studied. The experimental results indicated that relative density of CGO doped 2.0 mol% MnO1.333 (2Mn-CGO) increased within a certain temperature range because of the occurrence of viscous flow sintering, it was 89.5% at the sintering temperature of 1100 oC and higher 6.8% than that of CGO. Moreover, it can reach 91.1% for 2Mn-CGO at the sintering temperature of 1200 oC. The conductivity measured at 700 oC of 2Mn-CGO sintered at 1100 oC was 4.52×10-2 S/cm, which is higher than that of CGO. The value of 2Mn-CGO with the sintering temperature of 1200 oC was 5.24×10-2S/cm, which dropped slightly than that of CGO, this was caused by blocking of the migration of carriers.
Chunliang Zhang and Liangchi Zhang
Z. J. Zhang "Effect of Doped Manganese Oxide on the Properties of Ce0.8Gd0.2O2-δ Solid Electrolyte", Key Engineering Materials, Vols. 531-532, pp. 362-367, 2013