Standard thermodynamic properties of Bi2O3 by a solid-oxide electrolyte EMF technique

Aspiala, Markus; Sukhomlinov, Dmitry; Taskinen, Pekka

doi:10.1016/j.jct.2014.04.002

Cited by 10 publications

(3 citation statements)

References 26 publications

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“…(J·mol -1 ) = -522 350 (±1640) + 235.63 (±20.85) ·T (3) This result was compared in Fig. 2 with earlier published experimental data [28][29][30][31][32][33]. The scatter of the data is ~2.5 % of measured value and in case of Ganesan et al [32] comprehensive review is even <0.5 %.…”

Section: Thermodynamic Properties Of Bi 2 O 3 -Sio 2 Liquid Solutionsmentioning

confidence: 55%

Thermodynamics of Bi2O3-SiO2 system

Onderka

Fitzner

Kopyto

et al. 2017

J min metall B Metall

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Thermodynamic properties of the liquid Bi 2 O 3 -SiO 2 solutions were determined from the results of the electrochemical measurements by use of the solid oxide galvanic cells with YSZ (Yttria-Stabilized-Zirconia) electrolyte. Activities of Bi 2 O 3 in the solutions were determined for 0.2, 0.3, 0.4, and 0.5 SiO 2 mole fractions in the temperature range 1073-1293 K from measured electromotive force (e.m.f) of the solid electrolyte galvanic cell:Bi, Bi 2 O 3 -SiO 2 | YSZ | air (p O2 = 0.213 bar) Additionally, heat capacity data obtained for two solid phases 6Bi 2 O 3 ·SiO 2 and 2Bi 2 O 3 ·3SiO 2 were included into optimization of thermodynamic properties of the system. Optimization procedure was supported by differential thermal analysis (DTA) data obtained in this work as well as those accepted from the literature. Using the data obtained in this work, and the information about phase equilibria found in the literature, binary system Bi 2 O 3 -SiO 2 was assessed with the ThermoCalc software.

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Section: Thermodynamic Properties Of Bi 2 O 3 -Sio 2 Liquid Solutionsmentioning

confidence: 55%

Thermodynamics of Bi2O3-SiO2 system

Onderka

Fitzner

Kopyto

et al. 2017

J min metall B Metall

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“…The single-layer δ-Bi 2 O 3 –0.2 wt % B 2 O 3 electrolyte-based IT-MOFC reactions are similar to the single-layer TeO 2 –16 wt % Te 4 Bi 2 O 11 electrolyte-based IT-MOFC ones . In accordance with the literature data, H 2 and Bi 2 O 3 react by eq at 750 °C: …”

Section: Resultsmentioning

confidence: 99%

Functionally Graded IT-MOFC Electrolytes Based on Highly Conductive δ-Bi₂O₃–0.2 wt % B₂O₃ Composite with Molten Grain Boundaries

Fedorov

Sedov

Белоусов

2019

ACS Appl. Energy Mater.

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Recently, the concept of an intermediate-temperature molten oxide fuel cell (IT-MOFC) has been suggested. A MOFC combines the advantages of both the MCFC (highly conductive molten electrolyte) and SOFC (air oxygen is used as an oxidant). Here, we report the performances of IT-MOFCs based on functionally graded double-layer GDC/δ-Bi 2 O 3 −0.2 wt % B 2 O 3 and YSZ/δ-Bi 2 O 3 − 0.2 wt % B 2 O 3 electrolytes in which δ-Bi 2 O 3 −0.2 wt % B 2 O 3 composite with molten grain boundaries (GBs) on the cathode side (oxidant) provides the highest oxygen ionic conductivity of 2 S cm −1 at 750 °C.The GDC or YSZ layer on the anode side (reductant) protects δ-Bi 2 O 3 −0.2 wt % B 2 O 3 from decomposing in a reducing atmosphere. The optimal thicknesses of GDC and YSZ protective layers are evaluated. By reducing the thickness of the GDC and YSZ layers to 15 and 5 μm, respectively, the power density of these IT-MOFCs can theoretically reach a value of 1 W cm −2 . This value is significantly higher than the previously reported power output for IT-MOFCs based on the matrix TeO 2 −Te 4 Bi 2 O 11 (11.5 mW cm −2 at 640 °C) and Al 2 O 3 −Na 2 W 2 O 7 (121 mW cm −2 at 750 °C) electrolytes.

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“…Compounds on the basis of bismuth oxides possess a wide set of unique properties and they can be quite perspective in various areas [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. So, they can be used as ecological inorganic pigments applied in paints, plastics, ceramics and etc.…”

Section: Introductionmentioning

confidence: 99%

New phases Bi 12.5 Ln 1.5 ReO 24.5 : Thermodynamics and influence of dopant size on lattice energy (Ln – lanthanide)

Мацкевич

Wolf

Greaves

et al. 2015

The Journal of Chemical Thermodynamics

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Standard thermodynamic properties of Bi2O3 by a solid-oxide electrolyte EMF technique

Cited by 10 publications

References 26 publications

Thermodynamics of Bi2O3-SiO2 system

Thermodynamics of Bi2O3-SiO2 system

Functionally Graded IT-MOFC Electrolytes Based on Highly Conductive δ-Bi₂O₃–0.2 wt % B₂O₃ Composite with Molten Grain Boundaries

New phases Bi 12.5 Ln 1.5 ReO 24.5 : Thermodynamics and influence of dopant size on lattice energy (Ln – lanthanide)

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Standard thermodynamic properties of Bi2O3 by a solid-oxide electrolyte EMF technique

Cited by 10 publications

References 26 publications

Thermodynamics of Bi2O3-SiO2 system

Thermodynamics of Bi2O3-SiO2 system

Functionally Graded IT-MOFC Electrolytes Based on Highly Conductive δ-Bi2O3–0.2 wt % B2O3 Composite with Molten Grain Boundaries

New phases Bi 12.5 Ln 1.5 ReO 24.5 : Thermodynamics and influence of dopant size on lattice energy (Ln – lanthanide)

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Functionally Graded IT-MOFC Electrolytes Based on Highly Conductive δ-Bi₂O₃–0.2 wt % B₂O₃ Composite with Molten Grain Boundaries