Electrical Conduction in β‐Bi2O3 Doped with Sb2O3

Miyayama, Masaru; Katsuta, Shinichi; Suenaga, Yoshihiro; Yanagida, Hiroaki

doi:10.1111/j.1151-2916.1983.tb10096.x

Cited by 14 publications

(9 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the same temperature, a great amount of mass loss was determined on the TG graph. These thermal effects were associated with the volatilization of d-Bi 2 O 3 according to the references data [18][19][20][21][22][23][24][25]. In Fig.…”

Section: Resultsmentioning

confidence: 99%

The bulk electrical conductivity properties of δ-Bi2O3 solid electrolyte system doped with Yb2O3

Torun

Çakar

Ersoy

et al. 2015

J Therm Anal Calorim

View full text Add to dashboard Cite

In the present work, the binary system of (Bi 2 O 3 ) 1-x (Yb 2 O 3 ) x was investigated. For the production and stabilization of the fcc-type solid solution, small amounts of Yb 2 O 3 were doped into pure a-Bi 2 O 3 by the solid-state reactions in the doping range of 0.10 B x B 0.2. According to XRD and electrical conductivity measurements, the crystal formula of the formed d-Bi 2 O 3 was found to be Bi(III) 4-2x Yb(II) 2x O 6-x h 2?x (h: oxygen ion vacancies, VOÁÁ) and x values were in the range of 0.14 B x B 0.20 for heat treatment at 750°C. Four-probe d.c. electrical conductivity measurements showed that the studied system had an O 2-ionic-type electrical conductivity behavior. The maximum levels of the electrical conductivity were observed for 16 mol d-YSB material which had r T values: 0.316 and 0.632 X -1 cm -1 at 700 and 750°C, respectively. These materials can be used as ceramic electrolytes for solid electrolytic industrial applications.

show abstract

Section: Resultsmentioning

confidence: 99%

The bulk electrical conductivity properties of δ-Bi2O3 solid electrolyte system doped with Yb2O3

Torun

Çakar

Ersoy

et al. 2015

J Therm Anal Calorim

View full text Add to dashboard Cite

show abstract

“…As a result of these explanations about the lattice parameter variations in Table , it shows that dopant atoms are placed on sublattice at the end of the synthesis. The rate of diffusion of dopant cations into the lattice is rather slow and requires long‐term heat treatment cycles to achieve synthesis . That is why the substitution of cations via diffusion of atoms is slow in lattice.…”

Section: Resultsmentioning

confidence: 99%

“…During the oxidation of the cations, the existing O 2− anions are randomly converted into O 2 molecules, separated from the lattice and as a result of this oxygen atom defect occurs in lattice during this phase formation. .

{2O}_{(lattice)}^{2 -} \to {normalO}_{2} + {4e}^{-} + 2 {normalV}^{. .}

…”

Section: Resultsmentioning

confidence: 99%

Synthesis and microstructural characterization of δ‐phase bismuth‐based electroceramic systems by double‐doping regime

Yılmaz

Celen

2017

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

In this study, Bi 2 O 3 -based (Er 2 O 3 ) x (Gd 2 O 3 ) y (Bi 2 O 3 ) 1-x-y ternary compound powders were synthesized with different stoichiometric ratios by the solid-state reaction method at different annealing treatment. Crystal structure characterization was investigated via X-ray powder diffraction method in order to determine the fcc-cubic phases powders. Microstructure properties of pellet samples obtained from scanning electron microscopy. Also, thermal properties and porosity were investigated via differential thermal analysis and Brunauer-Emmett-Teller analysis. d-Phase structure was provided at all ternary samples at 800°C heat treatment temperature. The relationship between lattice parameters and total dopant rate was analyzed. As the amount of dopant rate increased, lattice parameters were increased. In conclusion, a correlation between the ionic radius of the dopant cations and lattice parameters was revealed. K E Y W O R D S solid oxide fuel cell, bismuth oxide, electroceramics, microstructure

show abstract

“…[6][7][8] β-and δ-Bi 2 O 3 phases display oxygen ionic conductivity properties and can be stabilized by doping with small amounts of other oxides. [9][10][11][12][13][14][15][16][17] This study examined the structure of β-and δ-Bi 2 O 3 phases doped with Tb 4 O 7 . [18] In the present work, we conducted tests on the electrical and thermal properties of β-and δ-Bi 2 O 3 phases doped with Tb 4 O 7 .…”

Section: Introductionmentioning

confidence: 99%

Measurement and Properties of the Oxide Ionic Conductivity of β- and δ-Phases in the Binary (Bi₂O₃)_1−x(Tb₄O₇) _x System

Kalaycıoğlu

Çırçır

2012

Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-

View full text Add to dashboard Cite

The total conductivity (σ T ) in the β-phase and δ-Bi 2 O 3 doped with Tb 4 O 7 system was measured in the composition range between 1 and 30 mol% Tb 4 O 7 at different temperatures. According to the DTA/TG results, this tetragonal type solid solution was stable up to about ∼740 • C, and the solubility limit was found at ∼5 mol% Tb 4 O 7 in the β-phase; this fcc type solid solution was stable up to about ∼740 • C, and the solubility limit was found at ∼30 mol% Tb 4 O 7 in the δ-phase. All phases showed predominant oxide ionic conduction. It has been proposed that β-and δ-Bi 2 O 3 phases contain a large number of oxide anion vacancies and incorporated terbium cations at tetrahedral sites that affect the oxygen sublattice of the crystal structure.Keywords bismuth oxide, oxygen ionic conductivity, terbium oxide INTRODUCTIONSolid electrolytes are the most important components of solid-state electrochemical devices, which are becoming increasingly important for applications in energy conversion, chemical processing, sensing, and combustion control. Bismuth oxide systems exhibit high oxide ionic conductivity and have been proposed as good electrolyte materials for applications such as solid oxide fuel cell and oxygen sensors. However, due to their instability under low oxygen partial pressure conditions there has been difficulty in developing these materials as alternative electrolyte materials compared to state-of-the-art cubic stabilized zirconia electrolyte. Bismuth oxide and doped bismuth oxide systems exhibit a complex array depending on dopant concentration, temperature, and atmosphere. [1][2][3][4][5] Six polymorphs of Bi 2 O 3 have been reported in the literature: monoclinic α-Bi 2 O 3 , tetragonal β-Bi 2 O 3 , cubic (bcc) γ -Bi 2 O 3 , cubic (fcc) δ-Bi 2 O 3 , orthorhombic ε-Bi 2 O 3 , and triclinic

show abstract

Electrical Conduction in β‐Bi₂O₃ Doped with Sb₂O₃

Cited by 14 publications

References 19 publications

The bulk electrical conductivity properties of δ-Bi2O3 solid electrolyte system doped with Yb2O3

The bulk electrical conductivity properties of δ-Bi2O3 solid electrolyte system doped with Yb2O3

Synthesis and microstructural characterization of δ‐phase bismuth‐based electroceramic systems by double‐doping regime

Measurement and Properties of the Oxide Ionic Conductivity of β- and δ-Phases in the Binary (Bi₂O₃)_1−x(Tb₄O₇) _x System

Contact Info

Product

Resources

About

Electrical Conduction in β‐Bi2O3 Doped with Sb2O3

Cited by 14 publications

References 19 publications

The bulk electrical conductivity properties of δ-Bi2O3 solid electrolyte system doped with Yb2O3

The bulk electrical conductivity properties of δ-Bi2O3 solid electrolyte system doped with Yb2O3

Synthesis and microstructural characterization of δ‐phase bismuth‐based electroceramic systems by double‐doping regime

Measurement and Properties of the Oxide Ionic Conductivity of β- and δ-Phases in the Binary (Bi2O3)1−x (Tb4O7) x System

Contact Info

Product

Resources

About

Electrical Conduction in β‐Bi₂O₃ Doped with Sb₂O₃

Measurement and Properties of the Oxide Ionic Conductivity of β- and δ-Phases in the Binary (Bi₂O₃)_1−x(Tb₄O₇) _x System