Dynamic reference electrode for investigation of fluoride melts containing beryllium difluoride

Афоничкин, В. К.; Bovet, A. L.; Ignatiev, V.; Panov, Alexander; Subbotin, V. G.; Surenkov, A. I.; Toropov, Andrey D.; Zherebtsov, A. L.

doi:10.1016/j.jfluchem.2008.07.017

Cited by 34 publications

(28 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the reference redox system has to be reversible. Previous works present the in-situ electrochemical generation of a reversible redox system by an anodic [22] or cathodic reaction [23][24][25]. Ema et al [23] have developed a dynamic reference electrode of Li, K/Li + ,K + for the electrochemistry in LiF-KF eutectic melt.…”

Section: State Of the Artmentioning

confidence: 99%

“…The small dispersion of the measurements allows this system to be used as a dynamic reference electrode. More recently, Afonichkin et al [24], have developed a device for redox potential measurements (DRPM) in LiF-NaF-BeF 2 (15-58-27) mol% molten salt at 600 C. The DRPM is based on a system with three electrodes and two of them are used for the dynamic reference electrode generation. The dynamic reference electrode is made of a tungsten electrode covered by metallic Be, the reference redox system being Be(II)/Be.…”

Section: State Of the Artmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Reference Electrode development for redox potential measurements in fluoride molten salt at high temperature

Durán-Klie

Rodrigues

Delpech

2016

Electrochimica Acta

View full text Add to dashboard Cite

International audienceMeasurement of redox potential in fluoride media is a major problem due to the difficulty to design a reference electrode with high stability, high mechanical resistance and high accuracy. In the frame of molten salt reactor studies, a dynamic reference electrode (DRE) is developed to measure redox potential in fluoride molten salt at high temperature. DRE is based on the in-situ generation of a transient redox system. The choice of the redox couple corresponds to the cathodic limit of the molten salt considered. As a preliminary step, the demonstration of feasibility of generating a DRE was done in LiF-NaF-KF (46.5–11.5–42 mol%) media at 500 °C. In this salt, the reference redox system generated by coulometry at applied current is KF/K, metallic potassium being electrodeposited on a tungsten wire electrode. The validation of the DRE response and the experimental optimization parameters for DRE generation were realized by following the NiF2/Ni redox potential evolution as a function of NiF2 concentration in the fused salt.The current value applied for DRE generation was optimized. It depends on the amount of metallic cations contained in the fused salt and which can be electrochemically reduced simultaneously during the DRE generation. The current corresponding to the DRE generation has to be 4 times greater than the current corresponding to the reduction of the other elements

show abstract

Section: State Of the Artmentioning

confidence: 99%

Section: State Of the Artmentioning

confidence: 99%

Dynamic Reference Electrode development for redox potential measurements in fluoride molten salt at high temperature

Durán-Klie

Rodrigues

Delpech

2016

Electrochimica Acta

View full text Add to dashboard Cite

show abstract

“…Solid reference state.-The standard Gibbs enthalpy G 0,S of reaction 12 in the solid reference state is extracted from FactSage database (not available in HSC): CeF 3 (s) = Ce + 1.5F 2 (g) [12] Values of E 0,S in V vs. F 2 /F − are in Table III.…”

Section: Resultsmentioning

confidence: 99%

Thermodynamic Properties Determination in LiF-CaF ₂ Using Electrochemistry in High Temperature Fused Salts: Application to CeF ₃

2017

View full text Add to dashboard Cite

Combining thermodynamic database and electrochemical measurements, CeF 3 thermodynamics properties were determined between 1113 K and 1233 K in LiF-CaF 2 solution. First, standard potentials of CeF 3 /Ce were calculated in different reference states: liquid and solid, and infinite dilution. Then activity coefficients of CeF 3 were estimated in the different reference states and for different composition scales: molarity, molality and molar fraction. Finally, constants which interconnected the infinite dilution reference state and the solid and liquid reference states were evaluated.Standard potential determination.-Theoretical thermodynamic values were extracted from FactSage and HSC 6.1 database, where the composition scale is the molar fraction.Liquid reference state.-HSC 6.1 software allows the standard Gibbs enthalpy G 0,L of the reaction presented below to be determined, where the solute is considered as pure compound in a liquid state.CeF 3 (l) = Ce + 1.5F 2 (g)

show abstract

“…A unique dynamic electrode has been reported recently for use in FLiBe . This design is relatively simple, which uses the Be/Be 2+ reference electrode.…”

Section: On‐line Purification Methodsmentioning

confidence: 99%

Impurities in Primary Coolant Salt of FHRs: Chemistry, Impact, and Removal Methods

Zhang

2019

Energy Tech

View full text Add to dashboard Cite

The fluoride salt‐cooled high‐temperature reactor (FHR) is one of the Gen. IV reactor concepts. Considering the complexity of salt chemistry, radiation risk, impurity‐induced material corrosion, and impurity‐induced solid precipitation, the salt chemistry should be well controlled. Therefore, molten salt cleanup systems are needed in operation. Based on the experience of molten salt reactors (MSRs) and available data, the present study identifies the types of impurities, their potential sources, and their impact in FHR primary coolants. Cleanup methods for each type of impurity and future research activities are also discussed.

show abstract

Dynamic reference electrode for investigation of fluoride melts containing beryllium difluoride

Cited by 34 publications

References 5 publications

Dynamic Reference Electrode development for redox potential measurements in fluoride molten salt at high temperature

Dynamic Reference Electrode development for redox potential measurements in fluoride molten salt at high temperature

Thermodynamic Properties Determination in LiF-CaF ₂ Using Electrochemistry in High Temperature Fused Salts: Application to CeF ₃

Impurities in Primary Coolant Salt of FHRs: Chemistry, Impact, and Removal Methods

Contact Info

Product

Resources

About

Dynamic reference electrode for investigation of fluoride melts containing beryllium difluoride

Cited by 34 publications

References 5 publications

Dynamic Reference Electrode development for redox potential measurements in fluoride molten salt at high temperature

Dynamic Reference Electrode development for redox potential measurements in fluoride molten salt at high temperature

Thermodynamic Properties Determination in LiF-CaF 2 Using Electrochemistry in High Temperature Fused Salts: Application to CeF 3

Impurities in Primary Coolant Salt of FHRs: Chemistry, Impact, and Removal Methods

Contact Info

Product

Resources

About

Thermodynamic Properties Determination in LiF-CaF ₂ Using Electrochemistry in High Temperature Fused Salts: Application to CeF ₃