Electrochemical codeposition of copper and manganese from room-temperature N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid

Chen, Po‐Yu; Deng, Ming-Jay; Zhuang, Ding-Xuan

doi:10.1016/j.electacta.2009.07.016

Cited by 38 publications

(21 citation statements)

References 18 publications

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“…Because of the poor solubility of many metal salts in TFSI-based ILs, anodic dissolution is a good technique for introducing metal ions into TFSI-based ILs. [31][32][33][34][35] However, it is very time-consuming. In addition, the Zn(II) species produced from the anodic dissolution of a Zn electrode shows an identical voltammetric behavior as that in [BMP][TFSI] containing Zn(TFSI) 2 .…”

Section: Resultsmentioning

confidence: 99%

Voltammetric Study and Electrodeposition of Zinc in Hydrophobic Room-Temperature Ionic Liquid 1-Butyl-1-methylpyrrolidinium Bis((trifluoromethyl)sulfonyl)imide ([BMP][TFSI]): A Comparison between Chloride and TFSI Salts of Zinc

Wang

Yeh

Tang

et al. 2016

J. Electrochem. Soc.

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The voltammetric behavior, nucleation mechanism, and electrodeposition of zinc were carefully studied in hydrophobic roomtemperature ionic liquid 1-butyl-1-methylpyrrolidinium bis((trifluoromethyl)sulfonyl)imide (RTIL [BMP][TFSI]). The Zn(II) species were introduced via the anodic dissolution of Zn, or the addition of Zn(TFSI) 2 and ZnCl 2 , respectively. Unexpectedly, ZnCl 2 shows a high solubility in [BMP][TFSI] where most metal chlorides are almost insoluble. For electrodeposition, ZnCl 2 hence can be used as a cheaper and time-saving alternative of the Zn(II) source. Two Zn salts show obviously different voltammetric behavior, which may result from the different Zn(II) species formed. Two redox couples of Zn(II) are observed in ZnCl 2 solutions but there is only one redox couple in Zn(TFSI) 2 solutions. Many phenomena imply that two Zn(II) species, one is partially Cl-coordinated and the other one is TFSI-coordinated, are produced from ZnCl 2 . The surface morphology of Zn deposits prepared from the two Zn salts at 80 • C is not distinguishable but apparently changed with the electrodepositing potential. Similarly, the nucleation mechanism is independent of the Zn salts, and a 3-dimensional (3D) progressive nucleation with diffusion controlled growth is observed. Oppositely, the deposition/stripping efficiency of Zn is significantly influenced by the source of Zn(II); a much higher efficiency is observed in the Zn ( Zinc is an important industrial metal regarding to the usage in corrosion-resistance coatings, 1 in energy storage devices such as Zn batteries, 2,3 and electrocatalysis. 4 Regardless of which application, electrodeposition of Zn is involved, and the relevant study is hence important. For electrodeposition of metals, the choice of the electrolytes is always crucial to the surface morphology of the electrodeposits, the current efficiency, the stability of the electrodeposits in the electrolytes, and the impact to the environment.Ionic liquids (ILs), including deep eutectic solvents (DESs), have been recognized as better electrolytes than organic or aqueous ones for the electrodeposition of metals, including Zn, 5,6 offering an alternative to toxic and/or corrosive additives such as cyanide and acid chloride. Moreover, if aprotic ILs are used, hydrogen evolution, which is usually encountered in the electrodeposition of active metals such as Zn in aqueous solutions, can be significantly suppressed, leading to a more controllable surface morphology and higher current efficiency. Zn has been successfully electrodeposited from the traditional Lewis acidic ILs, 7-10 the air-and water-stable ILs, 3,[11][12][13][14][15][16][17][18][19] To search a common source of Zn ions and a suitable IL for the electrodeposition of Zn metal, however, is still important.The hydrophobic RTIL 1-butyl-1-methylpyrrolidinium bis ((trifluoromethyl)sulfonyl)imide ([BMP][TFSI]) has been widely used for the study of metal and alloy electrodeposition in view of various advantages, such as wide electrochemical window, wide tempera...

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Section: Resultsmentioning

confidence: 99%

Voltammetric Study and Electrodeposition of Zinc in Hydrophobic Room-Temperature Ionic Liquid 1-Butyl-1-methylpyrrolidinium Bis((trifluoromethyl)sulfonyl)imide ([BMP][TFSI]): A Comparison between Chloride and TFSI Salts of Zinc

Wang

Yeh

Tang

et al. 2016

J. Electrochem. Soc.

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“…The disproportionation of Cu(I) to Cu and Cu(II), undergoing rapid reaction, in aqueous media is due to the much higher solvation enthalpy of Cu(II) in comparison to Cu(I) and the aquacomplexed Cu(I) species, e.g., [Cu(H 2 O 2 )] + are very unstable [68][69][70][71][72]. As a result, electrodeposition of copper from aqueous electrolytes, carried out with Cu(II) salts, usually follows a one-step reduction mechanism of Cu(II) to Cu 0 [68,69] 4 ] show that Cu(I) species are stable [70,71] and undergo one-electron reduction to Cu metal [72].…”

Section: Disproportionation Reaction Of Copper In Rtilsmentioning

confidence: 99%

“…As a result, electrodeposition of copper from aqueous electrolytes, carried out with Cu(II) salts, usually follows a one-step reduction mechanism of Cu(II) to Cu 0 [68,69] 4 ] show that Cu(I) species are stable [70,71] and undergo one-electron reduction to Cu metal [72]. The fact that Cu (I) disproportionates at a low rate in the RTILs suggests that the formation of Cu 0 may take place via a slow cation-assisted disproportionation of Cu(I) to Cu(II) and Cu 0 .…”

Section: Disproportionation Reaction Of Copper In Rtilsmentioning

confidence: 99%

A Disproportionation Reaction-Driven Electroless Deposition of Metals in RTILs

Zhang

Ohsaka

2015

Electrochemistry in Ionic Liquids

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Room-temperature ionic liquids (RTILs) are molten salts composed entirely of cations and anions, which have attracted intensive interest as new possible media for electrodeposition of metals, because RTILs have many advantages such as a wide electrochemical potential window, high ionic conductivity, and good thermal stability [1][2][3][4]. Also, there are a rising number of publications [5][6][7][8][9][10][11][12][13][14][15] demonstrating that anions and cations of RTILs can influence chemical and physicochemical reactions. RTILs are not only liquids with interesting physical properties, but also they can totally alter reaction pathways and products [5,6]. Previous attempts on RTILs have revealed that, as a new kind of solvents, they are favorable templates for the preparation of predictable chemical nanostructures [7][8][9][10]. RTILs stabilize metal nanoparticles due to their high ionic and dielectric properties, high polarity, and the ability to form supramolecular networks. A protective shell can be fabricated because anions will coordinate with the prepared metal nanoparticles and cations form hydrogen bridges with anions [7][8][9][10]

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“…However, the codepositon may be realized from air‐ and water‐stable ILs due to their wide EW. Examples are CuMn, CuLi, FeAl, FeSi, and CuZnAl alloys. Similar to the deposition of pure metals as above, the properties of the electrodeposited alloys can also be controlled by varying operation conditions such as solution composition, current density, deposition potential and temperature.…”

Section: Direct Electrodeposition From Ilsmentioning

confidence: 99%

Electrodeposition in Ionic Liquids

et al. 2015

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Due to their attractive physico-chemical properties, ionic liquids (ILs) are increasingly used as deposition electrolytes. This review summarizes recent advances in electrodeposition in ILs and focuses on its similarities and differences with that in aqueous solutions. The electrodeposition in ILs is divided into direct and template-assisted deposition. We detail the direct deposition of metals, alloys and semiconductors in five types of ILs, including halometallate ILs, air- and water-stable ILs, deep eutectic solvents (DESs), ILs with metal-containing cations, and protic ILs. Template-assisted deposition of nanostructures and macroporous structures in ILs is also presented. The effects of modulating factors such as deposition conditions (current density, current density mode, deposition time, temperature) and electrolyte components (cation, anion, metal salts, additives, water content) on the morphology, compositions, microstructures and properties of the prepared materials are highlighted.

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Electrochemical codeposition of copper and manganese from room-temperature N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid

Cited by 38 publications

References 18 publications

Voltammetric Study and Electrodeposition of Zinc in Hydrophobic Room-Temperature Ionic Liquid 1-Butyl-1-methylpyrrolidinium Bis((trifluoromethyl)sulfonyl)imide ([BMP][TFSI]): A Comparison between Chloride and TFSI Salts of Zinc

Voltammetric Study and Electrodeposition of Zinc in Hydrophobic Room-Temperature Ionic Liquid 1-Butyl-1-methylpyrrolidinium Bis((trifluoromethyl)sulfonyl)imide ([BMP][TFSI]): A Comparison between Chloride and TFSI Salts of Zinc

A Disproportionation Reaction-Driven Electroless Deposition of Metals in RTILs

Electrodeposition in Ionic Liquids

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