Application of voltammetry for quantitative analysis of chromium in molten 2LiF-BeF2 (FLiBe) salt
Abstract
The electrochemical behavior of Cr2+ in molten 2LiF-BeF2 (FLiBe) salt at temperatures between 500 °C and 700 °C was studied using cyclic voltammetry (CV) and linear sweep voltammetry (LSV). LSV has been used to establish a stable reference electrode with the Be/Be2+ couple. The ability to distinguish between common corrosion products, such as Cr2+ and Fe2+, with CV has been demonstrated using the Be/Be2+ reference reaction. Methods for high-precision, in-situ quantitative measurement of Cr2+ concentration are developed. Models for predicting the concentration of Cr2+ and its diffusion coefficient are approximated by relating faradaic cathodic peak current density to Cr2+ concentration at 600 °C and 650 °C. Here this study provides the basis for the development of a sensor for on-line quantification of corrosion products that improves understanding of materials performance in the molten FLiBe salt.
- Authors:
-
- University of Wisconsin, Madison, WI (United States)
- Publication Date:
- Research Org.:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of Wisconsin, Madison, WI (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE), Nuclear Energy University Program (NEUP); USDOE
- OSTI Identifier:
- 1613874
- Alternate Identifier(s):
- OSTI ID: 1547702
- Grant/Contract Number:
- NE0008285
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Electroanalytical Chemistry
- Additional Journal Information:
- Journal Volume: 838; Journal Issue: C; Journal ID: ISSN 1572-6657
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; cyclic voltammetry; FLiBe; molten salt; dynamic beryllium reference electrode
Citation Formats
Doniger, William H., and Sridharan, Kumar. Application of voltammetry for quantitative analysis of chromium in molten 2LiF-BeF2 (FLiBe) salt. United States: N. p., 2019.
Web. doi:10.1016/j.jelechem.2019.02.048.
Doniger, William H., & Sridharan, Kumar. Application of voltammetry for quantitative analysis of chromium in molten 2LiF-BeF2 (FLiBe) salt. United States. https://doi.org/10.1016/j.jelechem.2019.02.048
Doniger, William H., and Sridharan, Kumar. Tue .
"Application of voltammetry for quantitative analysis of chromium in molten 2LiF-BeF2 (FLiBe) salt". United States. https://doi.org/10.1016/j.jelechem.2019.02.048. https://www.osti.gov/servlets/purl/1613874.
@article{osti_1613874,
title = {Application of voltammetry for quantitative analysis of chromium in molten 2LiF-BeF2 (FLiBe) salt},
author = {Doniger, William H. and Sridharan, Kumar},
abstractNote = {The electrochemical behavior of Cr2+ in molten 2LiF-BeF2 (FLiBe) salt at temperatures between 500 °C and 700 °C was studied using cyclic voltammetry (CV) and linear sweep voltammetry (LSV). LSV has been used to establish a stable reference electrode with the Be/Be2+ couple. The ability to distinguish between common corrosion products, such as Cr2+ and Fe2+, with CV has been demonstrated using the Be/Be2+ reference reaction. Methods for high-precision, in-situ quantitative measurement of Cr2+ concentration are developed. Models for predicting the concentration of Cr2+ and its diffusion coefficient are approximated by relating faradaic cathodic peak current density to Cr2+ concentration at 600 °C and 650 °C. Here this study provides the basis for the development of a sensor for on-line quantification of corrosion products that improves understanding of materials performance in the molten FLiBe salt.},
doi = {10.1016/j.jelechem.2019.02.048},
journal = {Journal of Electroanalytical Chemistry},
number = C,
volume = 838,
place = {United States},
year = {Tue Feb 26 00:00:00 EST 2019},
month = {Tue Feb 26 00:00:00 EST 2019}
}
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Works referencing / citing this record:
Corrosion and Thermal Stability of CrMnFeNi High Entropy Alloy in Molten FLiBe Salt
journal, December 2019
- Elbakhshwan, Mohamed; Doniger, William; Falconer, Cody
- Scientific Reports, Vol. 9, Issue 1