Electrochemistry of Cd(II) in the basic 1-ethyl-3-methylimidazolium chloride/tetrafluoroborate room temperature molten salt

Po Yu Chen; I. Wen Sun

doi:10.1016/S0013-4686(00)00476-X

Electrochemistry of Cd(II) in the basic 1-ethyl-3-methylimidazolium chloride/tetrafluoroborate room temperature molten salt

Po Yu Chen, I. Wen Sun

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

81 Citations (Scopus)

Abstract

The electrochemistry of cadmium species was investigated at glassy carbon, polycrystalline tungsten and platinum electrodes in a basic 1-ethyl-3-methylimidazolium chloride/tetrafluoroborate room temperature molten salt. Amperometric titration experiments suggest that Cd(II) chloride is complexed as [CdCl₄]^2- in this melt. [CdCl₄]^2- could be reduced to cadmium metal via a single-step quasi-reversible electron transfer process. On the other hand, effective dissolution of cadmium to Cd(II) is effected by the presence of sufficient chloride ions. The electrodeposition of cadmium proceeds via three-dimensional progressive nucleation with diffusion-controlled growth. The average Stokes-Einstein product for [CdCl₄]^2- is (2.3±0.1)×10^-10 g cm s^-2 K^-1. The cadmium electrodeposits are found to be very pure and adhere well on the tungsten substrate.

Original language	English
Pages (from-to)	3163-3170
Number of pages	8
Journal	Electrochimica Acta
Volume	45
Issue number	19
DOIs	https://doi.org/10.1016/S0013-4686(00)00476-X
Publication status	Published - 2000 Jun 15

All Science Journal Classification (ASJC) codes

General Chemical Engineering
Electrochemistry

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@article{9e51e06b9ff64b489657c6746c4780c7,

title = "Electrochemistry of Cd(II) in the basic 1-ethyl-3-methylimidazolium chloride/tetrafluoroborate room temperature molten salt",

abstract = "The electrochemistry of cadmium species was investigated at glassy carbon, polycrystalline tungsten and platinum electrodes in a basic 1-ethyl-3-methylimidazolium chloride/tetrafluoroborate room temperature molten salt. Amperometric titration experiments suggest that Cd(II) chloride is complexed as [CdCl4]2- in this melt. [CdCl4]2- could be reduced to cadmium metal via a single-step quasi-reversible electron transfer process. On the other hand, effective dissolution of cadmium to Cd(II) is effected by the presence of sufficient chloride ions. The electrodeposition of cadmium proceeds via three-dimensional progressive nucleation with diffusion-controlled growth. The average Stokes-Einstein product for [CdCl4]2- is (2.3±0.1)×10-10 g cm s-2 K-1. The cadmium electrodeposits are found to be very pure and adhere well on the tungsten substrate.",

author = "Chen, {Po Yu} and Sun, {I. Wen}",

note = "Funding Information: This work was supported by the National Science Council of the Republic of China, Taiwan under Grant NSC 89-2113-M006-016. ",

year = "2000",

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doi = "10.1016/S0013-4686(00)00476-X",

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T1 - Electrochemistry of Cd(II) in the basic 1-ethyl-3-methylimidazolium chloride/tetrafluoroborate room temperature molten salt

AU - Chen, Po Yu

AU - Sun, I. Wen

N1 - Funding Information: This work was supported by the National Science Council of the Republic of China, Taiwan under Grant NSC 89-2113-M006-016.

PY - 2000/6/15

Y1 - 2000/6/15

N2 - The electrochemistry of cadmium species was investigated at glassy carbon, polycrystalline tungsten and platinum electrodes in a basic 1-ethyl-3-methylimidazolium chloride/tetrafluoroborate room temperature molten salt. Amperometric titration experiments suggest that Cd(II) chloride is complexed as [CdCl4]2- in this melt. [CdCl4]2- could be reduced to cadmium metal via a single-step quasi-reversible electron transfer process. On the other hand, effective dissolution of cadmium to Cd(II) is effected by the presence of sufficient chloride ions. The electrodeposition of cadmium proceeds via three-dimensional progressive nucleation with diffusion-controlled growth. The average Stokes-Einstein product for [CdCl4]2- is (2.3±0.1)×10-10 g cm s-2 K-1. The cadmium electrodeposits are found to be very pure and adhere well on the tungsten substrate.

AB - The electrochemistry of cadmium species was investigated at glassy carbon, polycrystalline tungsten and platinum electrodes in a basic 1-ethyl-3-methylimidazolium chloride/tetrafluoroborate room temperature molten salt. Amperometric titration experiments suggest that Cd(II) chloride is complexed as [CdCl4]2- in this melt. [CdCl4]2- could be reduced to cadmium metal via a single-step quasi-reversible electron transfer process. On the other hand, effective dissolution of cadmium to Cd(II) is effected by the presence of sufficient chloride ions. The electrodeposition of cadmium proceeds via three-dimensional progressive nucleation with diffusion-controlled growth. The average Stokes-Einstein product for [CdCl4]2- is (2.3±0.1)×10-10 g cm s-2 K-1. The cadmium electrodeposits are found to be very pure and adhere well on the tungsten substrate.

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U2 - 10.1016/S0013-4686(00)00476-X

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SP - 3163

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JO - Electrochimica Acta

JF - Electrochimica Acta

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ER -

Electrochemistry of Cd(II) in the basic 1-ethyl-3-methylimidazolium chloride/tetrafluoroborate room temperature molten salt

Abstract

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