ISSN 1608-4039 (Print)
ISSN 1680-9505 (Online)

For citation:

Nekrasov V. N., Terent'ev D. I., Batalov N. N., Barbin N. M., Konopel'ko M. A. Thermodynamic simulation of oxide ionic equilibria in mixtures of alkali element carbonates. Electrochemical Energetics, 2002, vol. 2, iss. 1, pp. 3-?. , EDN: QCODFJ

This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).
Language: 
Russian
Heading: 
Alkaline batteries
Article type: 
Article
EDN: 
QCODFJ

Thermodynamic simulation of oxide ionic equilibria in mixtures of alkali element carbonates

Autors: 
Nekrasov V. N., Institute of high-temperature Electrochemistry UB of RAS
Terent'ev D. I., Institute of high-temperature Electrochemistry UB of RAS
Batalov Nikolai Nikolaevich, Institute of high-temperature Electrochemistry UB of RAS
Barbin N. M., Institute of high-temperature Electrochemistry UB of RAS
Konopel'ko Maksim Alekseevich, Institute of high-temperature Electrochemistry UB of RAS
Abstract: 

The thermodynamic simulation of equilibriums in the system O2 + СO2 gas mixture – molten alkali carbonates has been performed. Two schemes were proposed to calculate the chemical equilibriums: CO32- = О2- + CO2, O22- = O22- + 1/2O2, 2O2- = О2- + 3/2O2. Concentrations of oxide, peroxide and superoxide ions and standard electrode potentials were calculated as a function of melt composition, partial pressure of O2 and CO2 . Solubility of molecular oxygen was assessed using hard-sphere based scheme. Results of the simulation were compared with the data obtained through conventional thermodynamic calculations and with experiment.

Key words: 
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Reference: 

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Received: 
25.02.2002
Accepted: 
25.02.2002
Published: 
31.03.2002