Electrochemical Oxygen Generator with Solid-Molten Bi2O3–B2O3 Electrolyte and Porous Bi3Ru3O11–Bi2O3 Electrodes

P. E. Dergacheva; Дергачева П. Е.; S. V. Fedorov; Федоров С. В.; V. V. Belousov; Белоусов В. В.; A. A. Konovalov; Коновалов А. А.; V. V. Artemov; Артемов В. В.

doi:10.31857/S0424857023060038

Electrochemical Oxygen Generator with Solid-Molten Bi2O3–B2O3 Electrolyte and Porous Bi3Ru3O11–Bi2O3 Electrodes

作者: Dergacheva P.E.¹, Fedorov S.V.¹, Belousov V.V.¹, Konovalov A.A.¹, Artemov V.V.²
隶属关系:
1. Baykov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
2. Federal Research Center of Crystallography and Photonics, Russian Academy of Sciences
期: 卷 59, 编号 6 (2023)
页面: 360-366
栏目: Articles
URL: https://journal-vniispk.ru/0424-8570/article/view/139283
DOI: https://doi.org/10.31857/S0424857023060038
EDN: https://elibrary.ru/PXYIJO
ID: 139283

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详细

A symmetrical electrochemical cell Bi3Ru3O11−35 wt % Bi2O3 porous electrode|Bi2O3−0.2 wt % B2O3 solid-molten electrolyte|Bi3Ru3O11−35 wt % Bi2O3 porous electrode is developed. The values of the cell ohmic and polarization resistances, Faraday efficiency, and oxygen permeation flux of the cell were measured using impedance spectroscopy and Coulomb volumetric technique at 740°C. These values are 0.046 and 0.077 Ω cm2, 97%, and 5×10–7 mol cm–2 s–1, respectively. The effect of wetting of the porous electrode surface on the polarization resistance was analyzed. The Bi3Ru3O11−35 wt % Bi2O3 and solid-molten Bi2O3−0.2 wt % B2O3 composites have a great potential to be used as the electrode and electrolyte materials in electrochemical oxygen generators.

关键词

electrochemical oxygen generator, electrolyte, electrode, wetting, impedance

参考

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