The effect of organic additives in electrodeposition of Co from an amide-type ionic liquid

Ryuta Fukui, Yasushi Katayama, Takashi Miura

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

The effect of organic additives, coumarin and thiourea (TU), on the electrodeposition of cobalt (Co) was investigated in an amide-type ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (BMPTFSA), containing Co(TFSA)2 as a Co source. In case of addition of coumarin, the deposition potential of Co shifted to the positive side while there was no change in the coordination environment of Co2+. However, the surface morphology was changed by addition of coumarin, suggesting the specific adsorption of coumarin on the surface of electrode. On the other hand, the deposition potential of Co shifted to the more positive side by addition of TU, probably due to the change in the coordination environment of Co2+ from [Co(TFSA)3]- to [Co(TU)4]2+. The diffusion coefficient of [Co(TU)4]2+ was determined as 7.2 × 10-8 cm2 s-1 at 27 °C by chronoamperometric method. The surface morphology of electrodeposit obtained from the electrolyte with TU was flat and less granular as compared to that without TU.

Original languageEnglish
Pages (from-to)1190-1196
Number of pages7
JournalElectrochimica Acta
Volume56
Issue number3
DOIs
Publication statusPublished - 2011 Jan 1

Fingerprint

Ionic Liquids
Cobalt
Amides
Ionic liquids
Electrodeposition
Thiourea
Thioureas
Surface morphology
Electrolytes
Adsorption
Electrodes
coumarin

Keywords

  • Cobalt
  • Coumarin
  • Electrodeposition
  • Ionic liquid
  • Thiourea

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

Cite this

The effect of organic additives in electrodeposition of Co from an amide-type ionic liquid. / Fukui, Ryuta; Katayama, Yasushi; Miura, Takashi.

In: Electrochimica Acta, Vol. 56, No. 3, 01.01.2011, p. 1190-1196.

Research output: Contribution to journalArticle

@article{b8cea6a13cff4ab3ba156e3422014c19,
title = "The effect of organic additives in electrodeposition of Co from an amide-type ionic liquid",
abstract = "The effect of organic additives, coumarin and thiourea (TU), on the electrodeposition of cobalt (Co) was investigated in an amide-type ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (BMPTFSA), containing Co(TFSA)2 as a Co source. In case of addition of coumarin, the deposition potential of Co shifted to the positive side while there was no change in the coordination environment of Co2+. However, the surface morphology was changed by addition of coumarin, suggesting the specific adsorption of coumarin on the surface of electrode. On the other hand, the deposition potential of Co shifted to the more positive side by addition of TU, probably due to the change in the coordination environment of Co2+ from [Co(TFSA)3]- to [Co(TU)4]2+. The diffusion coefficient of [Co(TU)4]2+ was determined as 7.2 × 10-8 cm2 s-1 at 27 °C by chronoamperometric method. The surface morphology of electrodeposit obtained from the electrolyte with TU was flat and less granular as compared to that without TU.",
keywords = "Cobalt, Coumarin, Electrodeposition, Ionic liquid, Thiourea",
author = "Ryuta Fukui and Yasushi Katayama and Takashi Miura",
year = "2011",
month = "1",
day = "1",
doi = "10.1016/j.electacta.2010.10.074",
language = "English",
volume = "56",
pages = "1190--1196",
journal = "Electrochimica Acta",
issn = "0013-4686",
publisher = "Elsevier Limited",
number = "3",

}

TY - JOUR

T1 - The effect of organic additives in electrodeposition of Co from an amide-type ionic liquid

AU - Fukui, Ryuta

AU - Katayama, Yasushi

AU - Miura, Takashi

PY - 2011/1/1

Y1 - 2011/1/1

N2 - The effect of organic additives, coumarin and thiourea (TU), on the electrodeposition of cobalt (Co) was investigated in an amide-type ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (BMPTFSA), containing Co(TFSA)2 as a Co source. In case of addition of coumarin, the deposition potential of Co shifted to the positive side while there was no change in the coordination environment of Co2+. However, the surface morphology was changed by addition of coumarin, suggesting the specific adsorption of coumarin on the surface of electrode. On the other hand, the deposition potential of Co shifted to the more positive side by addition of TU, probably due to the change in the coordination environment of Co2+ from [Co(TFSA)3]- to [Co(TU)4]2+. The diffusion coefficient of [Co(TU)4]2+ was determined as 7.2 × 10-8 cm2 s-1 at 27 °C by chronoamperometric method. The surface morphology of electrodeposit obtained from the electrolyte with TU was flat and less granular as compared to that without TU.

AB - The effect of organic additives, coumarin and thiourea (TU), on the electrodeposition of cobalt (Co) was investigated in an amide-type ionic liquid, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide (BMPTFSA), containing Co(TFSA)2 as a Co source. In case of addition of coumarin, the deposition potential of Co shifted to the positive side while there was no change in the coordination environment of Co2+. However, the surface morphology was changed by addition of coumarin, suggesting the specific adsorption of coumarin on the surface of electrode. On the other hand, the deposition potential of Co shifted to the more positive side by addition of TU, probably due to the change in the coordination environment of Co2+ from [Co(TFSA)3]- to [Co(TU)4]2+. The diffusion coefficient of [Co(TU)4]2+ was determined as 7.2 × 10-8 cm2 s-1 at 27 °C by chronoamperometric method. The surface morphology of electrodeposit obtained from the electrolyte with TU was flat and less granular as compared to that without TU.

KW - Cobalt

KW - Coumarin

KW - Electrodeposition

KW - Ionic liquid

KW - Thiourea

UR - http://www.scopus.com/inward/record.url?scp=78650516834&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78650516834&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2010.10.074

DO - 10.1016/j.electacta.2010.10.074

M3 - Article

AN - SCOPUS:78650516834

VL - 56

SP - 1190

EP - 1196

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

IS - 3

ER -