Water uptake and conduction property of nano-grained yttria-doped zirconia fabricated by ultra-high pressure compaction at room temperature

Miyoshi, Seiji; Akao, Yasuaki; Kuwata, Naoaki; Kawamura, Junichi; Oyama, Yukiko; Yagi, T.; Yamaguchi, Shu

doi:10.1016/j.ssi.2011.11.014

Cited by 59 publications

(89 citation statements)

References 18 publications

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“…As we increases the difference between metal work function and electron affinity of Gd 2 O 3 , more and more localized states are depleted and conductivity decreases accordingly. This type of resistive behavior of conductivity due to potential states has been demonstrated by Shogoi et al [22]. It is also reported that the conductance decreases as the carrier injection from electrode increases, therefore conduction can occur through easy path.…”

Section: Resultssupporting

confidence: 62%

Impact of metal electrode on charge transport behavior of metal-Gd2O3 systems

Wasiq

Nadeem

Mahmood³

et al. 2015

Journal of Alloys and Compounds

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Section: Resultssupporting

confidence: 62%

Impact of metal electrode on charge transport behavior of metal-Gd2O3 systems

Wasiq

Nadeem

Mahmood³

et al. 2015

Journal of Alloys and Compounds

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“…Below about 800 K, the electric conduction in humidified atmospheres is dominated essentially by proton hopping, which has been signified by its H/D isotope effect and pH 2 O dependence. And this shows a good feasibility of fabricating proton-conducting materials based on nanograined oxides, even if the bulk property involves negligible proton solubility and conductivity [106,107] reported the protonic conduction in the porous YSZ with a surface conduction mechanism. The physisorption reaction dominantly takes place at lower temperatures (<100°C), and the chemisorption reaction dominantly takes place at higher temperatures (>100°C).…”

Section: Proton and Oxide Ion Conduction In Nanostructured Oxidesmentioning

confidence: 77%

“…This will modify the Lewis/Bronsted acidity of the hydroxyls and H 2 O molecules on the surface, leading to particular protonics behavior of such nanograined materials [22]. Miyoshi et al [106] measured the water uptake and conductivity property of nanograined yttria-doped zirconia fabricated by ultra-high pressure compaction at room temperature. In dry atmospheres, oxide ion governs the total electrical conductivity as usually observed for yttria-stabilized zirconia (YSZ).…”

Section: Proton and Oxide Ion Conduction In Nanostructured Oxidesmentioning

confidence: 99%

Review on nanoperovskites: materials, synthesis, and applications for proton and oxide ion conductivity

Madhavan

Ashok

2014

Ionics

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Perovskite materials exhibiting proton and oxide ion conductivities have been utilized for various energyrelated applications such as solid oxide fuel cells (SOFCs), hydrogen production, gas sensors, etc. Nowadays, perovskites are being synthesized as nanoperovskites and studied for catalytic activity and energy-related applications. In this article, their synthesis in brief, the mechanism of proton and oxide ion conduction, and some specific properties and behaviors of few nanoperovskites as oxide ion and proton conductors and applications have been reported and discussed.

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“…is share phase change with increasing heat treatment temperature to the disadvantage of the monoclinic phase -in 1273 K the amount of this phase is negligible. For Zr 0.84 Y 0.16 O 1.92 both before and a er heat treatment, the dominant phase in the crystal was a cubic phase [66].…”

Section: Synthesis Of Nano-zirconia By the Sol-gel Methodsmentioning

confidence: 98%

“…e second weight loss was observed at 200-380°C, which was explained as being the result of the alkoxy group oxidation [48]. e e ect of the addition of the precursor metal on the zirconium dioxide crystal structure was also studied by Miyoshi et al [66]. e authors demonstrated that even a small addition of y rium (1 mol%) stabilizes the tetragonal phase.…”

Section: Synthesis Of Nano-zirconia By the Sol-gel Methodsmentioning

confidence: 99%

Characteristics of selected methods for the synthesis of nanometric zirconium oxide – critical review

Kwaśny¹,

Balcerzak²

2017

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High chemical stability, resistance to changes in the pH, pressure and temperature meant that zirconium oxide is widely used in many elds. It is used in water treatment and waste water treatment processes, as well as air puri cation. In this paper, selected methods of nano-zirconia synthesis in liquid phase were characterized. ese methods include, among others, the microemulsion method. Based on literature data, the advantages and di culties associated with the use of each method are presented, in order to answer the question of which method of nanometric zirconium oxide synthesis in the liquid phase is the most advantageous. e authors also pointed out some directions of development for the discussed methods, which relate to, among others, solvent change and the use of additives in the form of polymers.Keywords: nano zirconia, hydrothermal method, synthesis, microemulsion method Streszczenie Wysoka stabilność chemiczna, odporność na zmiany pH, ciśnienia i temperatury sprawiły, że tlenek cyrkonu znajduje szerokie zastosowanie w wielu dziedzinach. Jest stosowany w procesach uzdatniania wody i oczyszczania ścieków, a także w oczyszczaniu powietrza. W niniejszej pracy scharakteryzowano wybrane metody syntezy nanotlenku cyrkonu w fazie ciekłej. Wśród grupy tych metod wyróżnia się m.in. metodę mikroemulsji. Na podstawie danych literaturowych przedstawiono zalety i trudności związane ze stosowaniem poszczególnych metod, aby móc odpowiedzieć na pytanie, która metoda syntezy nanometrycznego tlenku cyrkonu, w fazie ciekłej, jest najkorzystniejsza. Autorzy wskazali również na pewne kierunki rozwojowe omówionych metod, które wiążą się m.in. ze zmianą polarności rozpuszczalnika i stosowaniem dodatków w formie polimerów.Słowa kluczowe: nanotlenek cyrkonu, metoda hydrotermalna, synteza, metoda mikroemulsji 110

show abstract

Water uptake and conduction property of nano-grained yttria-doped zirconia fabricated by ultra-high pressure compaction at room temperature

Cited by 59 publications

References 18 publications

Impact of metal electrode on charge transport behavior of metal-Gd2O3 systems

Impact of metal electrode on charge transport behavior of metal-Gd2O3 systems

Review on nanoperovskites: materials, synthesis, and applications for proton and oxide ion conductivity

Characteristics of selected methods for the synthesis of nanometric zirconium oxide – critical review

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