E.M.F. measurements on the nickel-nickel(II) couple in molten fluorides

Jenkins, H.W.; Mamantov, G.; Manning, D.L.

doi:10.1016/s0022-0728(68)80101-9

Cited by 53 publications

(48 citation statements)

References 9 publications

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“…Stability is tested measuring Jenkins demonstrated the Nernstian behavior of the Ni/Ni(II) redox couple (Equation 1), 6 and Blood reported the solubility limits for NiF 2 in FLiBe as a function of temperature.…”

Section: Resultsmentioning

confidence: 99%

“…Jenkins et al 6 reports a potential stability of +/−6 mV over a 12-day period in LiF-BeF 2 -ZrF 4, and +/−3 mV over a 11-day period in FLiNaK, measured against a Ni rod in an unsaturated NiF 2 solution. Our electrode performed comparably to these previously reported stability values of REs in fluoride salts.…”

Section: Resultsmentioning

confidence: 99%

“…For fluoride salt the redox couple most widely used in previous designs is the Ni/Ni(II) couple. [6][7][8] The REs built in this way consist of a nickel wire in contact with a fluoride salt batch saturated with nickel fluoride (NiF 2 ), which fixes the activity of the Ni 2+ ion. The designs differ in the materials used for the electrode body and the membrane that provides ionic contact between the RE salt and the main salt system.…”

Section: Introductionmentioning

confidence: 99%

“…(T ) [6] where a Ni 2+ ,2 and a Ni 2+ ,1 are the activities of Ni 2+ ions in the two electrodes, respectively. Due to temperature-dependent solubility limits, the Ni 2+ molar fractions, and hence the Ni 2+ activities are temperaturedependent.…”

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confidence: 99%

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Characterization of a Thermodynamic Reference Electrode for Molten LiF-BeF₂(FLiBe)

Carotti

Scarlat

2017

J. Electrochem. Soc.

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2LiF-BeF2 (FLiBe) is proposed as coolant for advanced nuclear fission and fusion reactors designs. Electrochemical techniques can be used to answer important research questions about the chemistry, mass transport, and corrosion behavior of FLiBe. The use of electrochemical techniques is predicated upon a thermodynamic reference electrode (RE) for FLiBe. This paper reports the design and characterization of a RE for FLiBe based on the Ni/Ni(II) redox couple, a boron nitride body, and a LaF3 ionic membrane. This electrode, tested in the range of 500°C–600°C shows stability of +/−1 mV for ten hours, good polarizability behavior, and Nernstian behavior. This data is comparable to other RE data reported for other fluoride salt mixtures. This paper also shows that beyond ten hours the RE potential drifts and there is evidence of Ni(II) depletion from the RE. We discuss some of the mechanisms that may cause this drift.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Characterization of a Thermodynamic Reference Electrode for Molten LiF-BeF₂(FLiBe)

Carotti

Scarlat

2017

J. Electrochem. Soc.

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“…They take advantage of Nernstian behavior of Ni/Ni 2+ red-ox couple [7] and were developed to provide reproducible electrochemical measurements in molten fluoride salt medium. The particular design is similar to the reference electrode reported by H. R. Bronstein et al [8], but the construction was significantly simplified.…”

Section: Reference Electrodementioning

confidence: 99%

Development of Pyrochemical Reprocessing of the Spent Nuclear Fuel and Prospects of Closed Fuel Cycle

Tulackova¹,

Chuchvalcova-Bimova²,

Precek³

et al. 2012

Atom Indo.

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DEVELOPMENT OF PYROCHEMICAL REPROCESSING OF THE SPENT NUCLEAR FUEL AND PROSPECTS OF CLOSED FUEL CYCLE.Molten-Salt Reactor (MSR) is a design of an advanced reactor system from the GEN IV family working in thermal or epithermal neutron spectrum and using thorium or transuranium fuel in the form of molten fluorides. It is based on the experience with the development of the molten-salt reactor technology in the Oak-Ridge National Laboratory in the United States. The MSR fuel cycle with integrated reprocessing represents one of the potential ways both for significant decrease of total amount of radioactive wastes for final deposition and for utilization of nuclear energy for electricity and heat production as effectively as possible. There are two pyrochemical reprocessing techniques studied in NRI Rez plc which are considered to be applied both for reprocessing of already existing spent fuel and for preparation and "on-line" reprocessing of MSR fuel: (i) the Fluoride Volatility Method (FVM), which performs chemical conversion of spent thermal oxide fuel components into fluorides and their consequent separation by means of their different volatility, thermal stability and chemical affinity to various sorbents; and (ii) electrochemical separation of the actinides (Ans) and fission products (FP), represented mainly by lanthanides (Lns), from each other by electrolytic deposition method on solid cathode in molten fluoride media.

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Potentiometric Sensors for High Temperature Liquids

Fouletier

Ghetta

2008

NATO Science for Peace and Security Series B: Physics and Biophysics

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E.M.F. measurements on the nickel-nickel(II) couple in molten fluorides

Cited by 53 publications

References 9 publications

Characterization of a Thermodynamic Reference Electrode for Molten LiF-BeF₂(FLiBe)

Characterization of a Thermodynamic Reference Electrode for Molten LiF-BeF₂(FLiBe)

Development of Pyrochemical Reprocessing of the Spent Nuclear Fuel and Prospects of Closed Fuel Cycle

Potentiometric Sensors for High Temperature Liquids

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E.M.F. measurements on the nickel-nickel(II) couple in molten fluorides

Cited by 53 publications

References 9 publications

Characterization of a Thermodynamic Reference Electrode for Molten LiF-BeF2(FLiBe)

Characterization of a Thermodynamic Reference Electrode for Molten LiF-BeF2(FLiBe)

Development of Pyrochemical Reprocessing of the Spent Nuclear Fuel and Prospects of Closed Fuel Cycle

Potentiometric Sensors for High Temperature Liquids

Contact Info

Product

Resources

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Characterization of a Thermodynamic Reference Electrode for Molten LiF-BeF₂(FLiBe)

Characterization of a Thermodynamic Reference Electrode for Molten LiF-BeF₂(FLiBe)