Structural and electrical properties of ZnO-doped 8 mol% yttria-stabilized zirconia

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

“…The blocking factor increases, since the secondary phase volume also increases, thus reducing electrical conductivity to levels lower than the reference. Liu, Lao 15 have shown similar results, where samples containing 0.5 wt% presented electrical conductivity 1.5 times higher than the reference YSZ at 800 °C.…”

“…There are several studies showing the use of sintering additives in YSZ [10][11][12][13][14] . In a nutshell, the main issues 15 . In their work it was reported that ZnO is soluble up to 10 wt% in the YSZ lattice.…”

“…Despite the interesting results from Liu, Lao 15 , in order to use YSZ-ZnO solid solutions as SOFC electrolytes, it is important to evaluate the YSZ-ZnO electrolytes under the SOFC reducing atmosphere working conditions, since ZnO is a well known n-type conductor in reducing atmospheres.…”

The effect of ZnO addition on the phase transformation, microstructure, and ionic conductivity of 8YSZ ceramics

“…Solid oxide fuel cells (SOFCs) have attracted much attention in recent years due to their various potential advantages, including a wide variety of available fuels, inexpensive technology, good durability and highly efficient energy conversion [1][2][3]. Yttria-stabilized zirconia (YSZ) is the traditional electrolyte of the cell system.…”

“…In addition to solve the elevated cost of the sealing materials and interconnects, as well as the durability of the cells. Some experiments have reported the effect of dopants on the sintering, electrical, microstructure and mechanical properties of YSZ [2][3][4]. The ionic conductivity of YSZ are resulting from oxygen vacancies which depends on the type of dopant element and their amount [5].…”