Influence of Basicity on Anodic Reaction in CaO-SiO2-Al2O3Melts

Sang Hoon Lee; Dong Joon Min

doi:10.1149/2.0481708jes

Influence of Basicity on Anodic Reaction in CaO-SiO₂-Al2O₃Melts

Sang Hoon Lee, Dong Joon Min

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

A cyclic voltammetry study on the anodic reaction between carbon electrodes and CaO-SiO2-Al2O3 melts at 1773 K was carried out to understand the electrochemical behavior of free oxygen ions in silicate melts. The potential of free oxygen ions corresponding to CO evolution in the totally diffusion controlled region was obtained from the voltammetric data. An empirical relationship between the current density on the logarithm scale and the basicity (B) of each silicate melt was established through Tafel analysis in the non-diffusion-controlled region. The obtained electrochemical data showed good correlation with thermodynamic properties such optical basicity and sulfide capacity of the silicate melts as a relative index of oxygen ion activity in molten oxides. The use of this electrochemical method to evaluate the relative potential of oxygen ions in molten oxides is discussed in detail.

Original language	English
Pages (from-to)	H5308-H5314
Journal	Journal of the Electrochemical Society
Volume	164
Issue number	8
DOIs	https://doi.org/10.1149/2.0481708jes
Publication status	Published - 2017 Aug

Bibliographical note

Publisher Copyright:
© The Author(s) 2017.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Condensed Matter Physics
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1149/2.0481708jes

Cite this

@article{a8f1b51a3f654157bf190582fcfdef78,

title = "Influence of Basicity on Anodic Reaction in CaO-SiO2-Al2O3Melts",

abstract = "A cyclic voltammetry study on the anodic reaction between carbon electrodes and CaO-SiO2-Al2O3 melts at 1773 K was carried out to understand the electrochemical behavior of free oxygen ions in silicate melts. The potential of free oxygen ions corresponding to CO evolution in the totally diffusion controlled region was obtained from the voltammetric data. An empirical relationship between the current density on the logarithm scale and the basicity (B) of each silicate melt was established through Tafel analysis in the non-diffusion-controlled region. The obtained electrochemical data showed good correlation with thermodynamic properties such optical basicity and sulfide capacity of the silicate melts as a relative index of oxygen ion activity in molten oxides. The use of this electrochemical method to evaluate the relative potential of oxygen ions in molten oxides is discussed in detail.",

author = "Lee, {Sang Hoon} and Min, {Dong Joon}",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2017.",

year = "2017",

month = aug,

doi = "10.1149/2.0481708jes",

language = "English",

volume = "164",

pages = "H5308--H5314",

journal = "Journal of the Electrochemical Society",

issn = "0013-4651",

publisher = "Institute of Physics",

number = "8",

}

TY - JOUR

T1 - Influence of Basicity on Anodic Reaction in CaO-SiO2-Al2O3Melts

AU - Lee, Sang Hoon

AU - Min, Dong Joon

PY - 2017/8

Y1 - 2017/8

N2 - A cyclic voltammetry study on the anodic reaction between carbon electrodes and CaO-SiO2-Al2O3 melts at 1773 K was carried out to understand the electrochemical behavior of free oxygen ions in silicate melts. The potential of free oxygen ions corresponding to CO evolution in the totally diffusion controlled region was obtained from the voltammetric data. An empirical relationship between the current density on the logarithm scale and the basicity (B) of each silicate melt was established through Tafel analysis in the non-diffusion-controlled region. The obtained electrochemical data showed good correlation with thermodynamic properties such optical basicity and sulfide capacity of the silicate melts as a relative index of oxygen ion activity in molten oxides. The use of this electrochemical method to evaluate the relative potential of oxygen ions in molten oxides is discussed in detail.

AB - A cyclic voltammetry study on the anodic reaction between carbon electrodes and CaO-SiO2-Al2O3 melts at 1773 K was carried out to understand the electrochemical behavior of free oxygen ions in silicate melts. The potential of free oxygen ions corresponding to CO evolution in the totally diffusion controlled region was obtained from the voltammetric data. An empirical relationship between the current density on the logarithm scale and the basicity (B) of each silicate melt was established through Tafel analysis in the non-diffusion-controlled region. The obtained electrochemical data showed good correlation with thermodynamic properties such optical basicity and sulfide capacity of the silicate melts as a relative index of oxygen ion activity in molten oxides. The use of this electrochemical method to evaluate the relative potential of oxygen ions in molten oxides is discussed in detail.

UR - http://www.scopus.com/inward/record.url?scp=85050101173&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85050101173&partnerID=8YFLogxK

U2 - 10.1149/2.0481708jes

DO - 10.1149/2.0481708jes

M3 - Article

AN - SCOPUS:85050101173

SN - 0013-4651

VL - 164

SP - H5308-H5314

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 8

ER -