Determination of the activity coefficient of Am in liquid Al by electrochemical methods

Electrochemical behaviour of terbium in the eutectic LiCl-KCl in Cd liquid electrodes.- Evaluation of the thermochemical properties of the TbCdx intermetallic compounds

“…The regression analysis of the data and its residual analysis indicate a positive correlation of the values, and that this correlation is compatible with a linear model, indicating a mass transport controlled by diffusion both in the salt and the metallic phase. (ii) The ratio of the anodic and cathodic peaks currents, Ip a /Ip c , remained close to unity, thereby according to the theory of cyclic voltammetry [13] the diffusion coefficients D Tb(III) in LiCl-KCl and D Tb into the liquid metal are expected to be of the same order, as it has been shown before for other lanthanides [9,[14][15][16], and actinides [6,17,20] in liquid metals. (iii) After correction of the ohmic drop, and despite the difficulty of measuring the cathodic peak potential, Ep c , it has been observed that both Ep c and Ep a , do not change with increasing sweep rate for values lower than 0.050 V s À1 , whereas for higher sweep rates a slightly shift towards more cathodic and anodic values respectively is detectable, indicating that the electrochemical system is close to the reversibility but not fully reversible.…”

“…Cyclic voltammetry using liquid metals as working electrodes, has been proposed as an alternative approach for the acquisition of basic data on electrolytic alloy formation, in the same way that polarography has been used in aqueous solution [9,[13][14][15][16][17]. In order to compare the experimental results with the predictions of the theory, it is mandatory to maintain the concentration of the deposited metal in the Cd interphase below its solubility in the liquid metal [9,[13][14][15][16][17][18].…”

“…In order to compare the experimental results with the predictions of the theory, it is mandatory to maintain the concentration of the deposited metal in the Cd interphase below its solubility in the liquid metal [9,[13][14][15][16][17][18]. If the amount of Tb exceeds its solubility, the electrode loses its homogeneity, and separate solid phases (i.e.…”

“…TbCd þ Tb (17) In order to confirm the reproducibility of the experiment, the same measurement was repeated several times. The uncertainty was given by standard deviation for each measurement.…”

Evaluation of the thermochemical properties of Ho–Cd intermetallic compounds using electrochemical techniques

“…A similar behavior to those reported for other Lns and Ans in liquid cathodes. 5,11,17,[22][23][24] Ho(III)+ Cd + 3e # Ho (Cd) (2)…”