Sinterability and electrical properties of ZnO-doped Ce0.8Y0.2O1.9 electrolytes prepared by an EDTA–citrate complexing method

Microstructure, Crystal structure and ionic conductivity of 3 mol % (Fe, Mn, Co, Zn) doped 8YSZ

“…It shows relative density of sample increasing with dopant concentration of 3 mol %. Liquid phase promotes the diffusion rate of 8YSZ matrix, enhance densification and grain growth [14]. Fig 4(e), YSZ in spherical shape which is similar to the microstructure previously reported by Pradhan [15,16].…”

“…Fig 4(e), YSZ in spherical shape which is similar to the microstructure previously reported by Pradhan [15,16]. In Fig 4(a) were not well sintered; the micrograph revealed some open pores, showing not fully densified microstructure, it lead to relative density values being less than 100% [14]. Hence, it can conclude that sinterability of specimen prolonging the holding time, whereas ionic conductivity may improve by increasing the density.…”

“…Undoped 8YSZ was dense with small close pore, rapid densification of MnO added specimen may attributed of liquid phase sintering. Liquid phase promotes the diffusion rate of 8YSZ matrix, enhance densification and grain growth [14]. Previous research of Vijaya Lakshmi on stabilization effect on Mn is not well established in phase diagram.…”

“…From the previous research, Wang et al proposed that addition of ZnO gives an adverse reaction to the conductivities [19]. Besides that, Shujun et al had investigated that highest ionic value of 1 mol% of Zn doped Ce 0.8 Y 0.2 O 1.9 was 0.0516 Scm -1 at 750 °C [14]. In previous study, ZnO decrease the activation energy of conduction, hence it increase ionic conductivity [14].…”

Microstructural and Electrical Features of Yttrium Stabilised Zirconia with ZnO as Sintering Additive

“…ZnO has also been used as sintering additive on rare-earth doped ceria electrolytes 8,9 . In the ZnO-rare earth doped ceria electrolytes, the sintering temperature was lowered from 1500 °C down to 1350 °C.…”