Effects of acetonitrile on electrodeposition of Ni from a hydrophobic ionic liquid

Yan Li Zhu; Yasushi Katayama; Takashi Miura

doi:10.1016/j.electacta.2010.07.097

Effects of acetonitrile on electrodeposition of Ni from a hydrophobic ionic liquid

Yan Li Zhu, Yasushi Katayama^*, Takashi Miura

^*Corresponding author for this work

Keio University

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

50 Citations (Scopus)

Abstract

The effects of addition of acetonitrile (ACN) on electrodeposition of nickel were investigated in a hydrophobic room-temperature ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (BMPTFSA) containing Ni(TFSA)₂. Addition of ACN resulted in the change of the color of the ionic liquid. The UV-vis and FT-IR spectra of the electrolyte showed the coordination environment of Ni(II) changed gradually from [Ni(TFSA)₃]^- to [Ni(ACN)₆]²⁺ with an increase in the concentration of ACN. The diffusion coefficient of Ni(II) in BMPTFSA was increased and the reduction potential of Ni(II) shifted to the more positive side in the presence of ACN. The nucleation/growth process of Ni was not affected by the change in the coordination environment of Ni(II) from the chronoamperometric results although the more nuclei formed on the electrode surface. SEM showed smoother deposit was obtained in Ni(TFSA) ₂/BMPTFSA with ACN.

Original language	English
Pages (from-to)	9019-9023
Number of pages	5
Journal	Electrochimica Acta
Volume	55
Issue number	28
DOIs	https://doi.org/10.1016/j.electacta.2010.07.097
Publication status	Published - 1 Dec 2010
Externally published	Yes

Keywords

1-butyl-1- methylpyrrolidinium
Acetonitrile
Bis(trifluoromethylsulfonyl)amide
Electrodeposition
Ionic liquid
Nickel

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10.1016/j.electacta.2010.07.097

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title = "Effects of acetonitrile on electrodeposition of Ni from a hydrophobic ionic liquid",

abstract = "The effects of addition of acetonitrile (ACN) on electrodeposition of nickel were investigated in a hydrophobic room-temperature ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (BMPTFSA) containing Ni(TFSA)2. Addition of ACN resulted in the change of the color of the ionic liquid. The UV-vis and FT-IR spectra of the electrolyte showed the coordination environment of Ni(II) changed gradually from [Ni(TFSA)3]- to [Ni(ACN)6]2+ with an increase in the concentration of ACN. The diffusion coefficient of Ni(II) in BMPTFSA was increased and the reduction potential of Ni(II) shifted to the more positive side in the presence of ACN. The nucleation/growth process of Ni was not affected by the change in the coordination environment of Ni(II) from the chronoamperometric results although the more nuclei formed on the electrode surface. SEM showed smoother deposit was obtained in Ni(TFSA) 2/BMPTFSA with ACN.",

keywords = "1-butyl-1- methylpyrrolidinium, Acetonitrile, Bis(trifluoromethylsulfonyl)amide, Electrodeposition, Ionic liquid, Nickel",

author = "Zhu, {Yan Li} and Yasushi Katayama and Takashi Miura",

year = "2010",

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doi = "10.1016/j.electacta.2010.07.097",

language = "English",

volume = "55",

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journal = "Electrochimica Acta",

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T1 - Effects of acetonitrile on electrodeposition of Ni from a hydrophobic ionic liquid

AU - Zhu, Yan Li

AU - Katayama, Yasushi

AU - Miura, Takashi

PY - 2010/12/1

Y1 - 2010/12/1

N2 - The effects of addition of acetonitrile (ACN) on electrodeposition of nickel were investigated in a hydrophobic room-temperature ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (BMPTFSA) containing Ni(TFSA)2. Addition of ACN resulted in the change of the color of the ionic liquid. The UV-vis and FT-IR spectra of the electrolyte showed the coordination environment of Ni(II) changed gradually from [Ni(TFSA)3]- to [Ni(ACN)6]2+ with an increase in the concentration of ACN. The diffusion coefficient of Ni(II) in BMPTFSA was increased and the reduction potential of Ni(II) shifted to the more positive side in the presence of ACN. The nucleation/growth process of Ni was not affected by the change in the coordination environment of Ni(II) from the chronoamperometric results although the more nuclei formed on the electrode surface. SEM showed smoother deposit was obtained in Ni(TFSA) 2/BMPTFSA with ACN.

AB - The effects of addition of acetonitrile (ACN) on electrodeposition of nickel were investigated in a hydrophobic room-temperature ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (BMPTFSA) containing Ni(TFSA)2. Addition of ACN resulted in the change of the color of the ionic liquid. The UV-vis and FT-IR spectra of the electrolyte showed the coordination environment of Ni(II) changed gradually from [Ni(TFSA)3]- to [Ni(ACN)6]2+ with an increase in the concentration of ACN. The diffusion coefficient of Ni(II) in BMPTFSA was increased and the reduction potential of Ni(II) shifted to the more positive side in the presence of ACN. The nucleation/growth process of Ni was not affected by the change in the coordination environment of Ni(II) from the chronoamperometric results although the more nuclei formed on the electrode surface. SEM showed smoother deposit was obtained in Ni(TFSA) 2/BMPTFSA with ACN.

KW - 1-butyl-1- methylpyrrolidinium

KW - Acetonitrile

KW - Bis(trifluoromethylsulfonyl)amide

KW - Electrodeposition

KW - Ionic liquid

KW - Nickel

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U2 - 10.1016/j.electacta.2010.07.097

DO - 10.1016/j.electacta.2010.07.097

M3 - Article

AN - SCOPUS:78049267676

SN - 0013-4686

VL - 55

SP - 9019

EP - 9023

JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 28

ER -

Effects of acetonitrile on electrodeposition of Ni from a hydrophobic ionic liquid

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