Facile visualization of the initial nucleation and growth of an active metal electrodeposited in a high temperature molten salt using a detachable disk electrode

Liu, Kui; Ma, Yue; Kang, Mingliang; Wang, Biao

doi:10.1016/j.elecom.2020.106780

Cited by 4 publications

(1 citation statement)

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“…One is the widely used tungsten wire (φ = 1 mm) cathode, and another is a tungsten disk (9 mm D × 1 mm l) electrode encapsulated by a cylinder boron nitride (BN) shroud which is made up of a fastening screw rod and a lock nut. 18 The disk inside is clamped between the BN lock nut and a stainless steel (SS) cylinder connecting a SS wire sealing in the BN screw rod as current collector. At the end of the lock nut, a small hole (2-5 mm) was previously drilled in order to contact and conduct with the melt.…”

Section: Methodsmentioning

confidence: 99%

Electrochemical Properties and Nucleation Morphology of Yttrium on Tungsten Substrate in Molten Salt

Liu

Wang

et al. 2020

J. Electrochem. Soc.

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In this work, the diffusion coefficient and electrocrystallization of yttrium in LiCl-KCl eutectic are typically investigated using different electrochemical techniques such as cyclic voltammetry (CV), chronopotentiometry (CP) and chronoamperometry (CA) techniques. At temperature from 673 to 823 K, the diffusion coefficients of two yttrium concentrations (YCl 3 = 3.816 × 10 −5 and 9.981 × 10 −5 mol ml −1 ) were determined by CP and CV methods in a range from 0.453 ´10 −5 to 8.25 ´10 −5 cm 2 s −1 . The nucleation of Y electrodeposition is confirmed to be an instantaneous mode regardless the given temperature, over-potential and concentrations. The morphology of yttrium nuclei and growth evolution on a tungsten surface were characterized by the SEM-EDS. Some individual circular regions corresponding to initial Y nucleation sites are firstly observed on the tungsten surface. The subsequent formed Y nuclei were found to migrate toward those circular nucleation sites to extend its growth on the inside and peripheral of the circle. In addition, no distinct dendritic structure for the Y deposition was observed on the W surface.

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Section: Methodsmentioning

confidence: 99%