Role of grain boundaries on the electrical properties of titania doped yttria stabilized zirconia

Electrical properties of the grain boundaries of oxygen ion conductors: Acceptor-doped zirconia and ceria

“…T = 1300°C and P O 2 ¼ 10 À35 atm [123]), but such extreme conditions are experimentally difficult to achieve. The difficulty can be overcome by the addition of metal ions with different valence states; in this respect TiO 2 is a good example [173][174][175][176][177][178]. When dissolved, Ti 4+ substitutionally replaces Zr 4+ in the ZrO 2 fluorite lattice [173]; and TiO 2 can be dissolved in ZrO 2 to a large amounts, e.g.…”

Elucidating the capacitive behavior of Gd-doped BNT-BKT-BT electrodes in All-in-One supercapacitor devices

“…The effect of doping is different from one system to another. For example, in some ceramics, such as yttria-stabilized zirconia [43,44], doping with certain elements can improve the grain boundary conductivity by increasing the concentration of oxygen vacancies at the grain boundary. In other ceramics, such as alumina [45], doping with certain elements can reduce the grain boundary energy, making the material more resistant to cracking and increasing its strength.…”

Relationships between structural and electrical properties in mixed conductors duplex materials in the ZrO2-Y2O3-TiOColomer1, Díaz‐Moreno2, Boada3 et al. 2014Phys. Rev. B

“…The XRD patterns obtained were analyzed using the diffraction files of Zr 0. 8 The phase distributions (in mol fraction) in the sintered materials were determined by the ratio [19]:…”

“…Most of the research efforts performed in the past have been mainly focused on the electrical properties of mixed conductors based on titania-doped yttria-stabilized zirconia and on the titania-doped yttria-tetragonal zirconia materials [5][6][7][8][9][10][11][12][13][14]. In addition, studies of the local environment of mobile ionic species, i.e.…”