Electrodeposition of CoNiMo thin films using glycine as additive: anomalous and induced codeposition

Esteves, Marcos C.; Sumodjo, Paulo Teng An; Podlaha, E. J.

doi:10.1016/j.electacta.2011.06.079

Cited by 33 publications

(11 citation statements)

References 27 publications

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“…Nevertheless, due to hydrogen evolution competing with metal deposition, the pH in the direct vicinity of the electrode may be significantly higher than in the bulk solution. This might promote formation of cobalt and nickel complexes with the anionic glycine species resulting in [CoGly 3 ]

^{-}

and [NiGly 3 ]

^{-}

(), with their reversible potentials closer to

E_{C}

than [NiGly 3 ]

^{2 +}

. Furthermore, formation of the cobalt complex occurs faster than the nickel complex (), making less glycine available for complexation of nickel with glycine.…”

Section: Resultsmentioning

confidence: 99%

“…This might promote formation of cobalt and nickel complexes with the anionic glycine species resulting in [CoGly 3 ]

^{-}

and [NiGly 3 ]

^{-}

(), with their reversible potentials closer to

E_{C}

than [NiGly 3 ]

^{2 +}

. Furthermore, formation of the cobalt complex occurs faster than the nickel complex (), making less glycine available for complexation of nickel with glycine. Comparing the calculated reversible potentials to the crossover potential, it might be concluded that

E_{C}

results from combined reduction of non‐complexed metal ion species and complexes with glycine in the anionic form.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, saccharin improves the brightness of cobalt–nickel deposits . Addition of glycine to cobalt–nickel electroplating solutions also results in bright deposits () and cobalt(II)’glycine complexes have been related to inhibition of nickel reduction due to adsorption . Glycine (Gly) is the smallest amino acid and depending on pH it exists either in the cationic (

H_{3} N^{+} - {CH}_{2} - italicCOOH

), zwitterionic (

H_{3} N^{+} - {CH}_{2} - {COO}^{-}

), or anionic (

H_{2} normalN - {normalCH}_{2} - {italicCOO}^{-}

) form.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Cobalt–nickel material libraries obtained from electrodeposition using citrate or glycine as additives

Grill

Pötzelberger

Kollender

et al. 2016

Physica Status Solidi (a)

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Fabrication of cobalt-nickel material libraries was performed by electrodeposition in a modified 3D-printed Hull cell using sulfate-based electrolyte baths containing trisodium citrate or glycine as additives. A transition from anomalous to normal co-deposition behavior was observed for different overall applied current densities. Scanning electron microscopy (SEM) images showed needle-shaped crystallites on the sample obtained from citrate solution and a nodular surface morphology for the material library from glycine solution. Non-enzymatic glucose sensing was carried out by flow-type scanning droplet cell microscopy (FT-SDCM) to investigate the electrocatalytic activity for glucose oxidation.Cobalt-nickel material library fabricated by electrodeposition in the presence of trisodium citrate or glycine as additives using a modified 3D-printed Hull cell.

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^{-}

and [NiGly 3 ]

^{-}

(), with their reversible potentials closer to

E_{C}

than [NiGly 3 ]

^{2 +}

. Furthermore, formation of the cobalt complex occurs faster than the nickel complex (), making less glycine available for complexation of nickel with glycine.…”

Section: Resultsmentioning

confidence: 99%

“…This might promote formation of cobalt and nickel complexes with the anionic glycine species resulting in [CoGly 3 ]

^{-}

and [NiGly 3 ]

^{-}

(), with their reversible potentials closer to

E_{C}

than [NiGly 3 ]

^{2 +}

E_{C}

results from combined reduction of non‐complexed metal ion species and complexes with glycine in the anionic form.…”

Section: Resultsmentioning

confidence: 99%

H_{3} N^{+} - {CH}_{2} - italicCOOH

), zwitterionic (

H_{3} N^{+} - {CH}_{2} - {COO}^{-}

), or anionic (

H_{2} normalN - {normalCH}_{2} - {italicCOO}^{-}

) form.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cobalt–nickel material libraries obtained from electrodeposition using citrate or glycine as additives

Grill

Pötzelberger

Kollender

et al. 2016

Physica Status Solidi (a)

View full text Add to dashboard Cite

show abstract

“…The predominant Ni‐Gly complexes according to Esteves et al are [NiGly] + and [Ni(Gly) 2 ], in which the glycine ligands in the direct vicinity of the cathode are in the form of

{normalH}_{2} normalN

’

{normalCH}_{2}

’

{normalCOO}^{-}

, because hydrogen evolution as a side reaction of electroplating is accompanied by a local increase of pH value. Ortiz–Aparicio et al report [CoGly] + and [Zn(Gly) 2 ] to be the major species of Co‐Gly and Zn‐Gly complexes.…”

Section: Resultsmentioning

confidence: 99%

Preparation and investigation of combinatorially electrodeposited zinc-nickel, zinc-cobalt, and zinc-nickel-cobalt material libraries

Grill

Kollender

Hassel

2017

Phys. Status Solidi A

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By means of a combinatorial Hull cell approach, Zn-Ni, Zn-Co, and Zn-Ni-Co material library samples have been fabricated galvanostatically from a slightly acidic sulfate-based electrolyte bath containing glycine as complexing agent. The compositions were determined by X-ray fluorescence spectroscopy (XRF), surface morphology was studied by scanning electron microscopy (SEM) and the crystallographic structure was analysed from X-ray diffraction (XRD) measurements. By means of scanning droplet cell microscopy (SDCM), potentiodynamic polarisation curves were recorded in order to examine the corrosion properties of the different materials. The most noble corrosion potentials and low corrosion currents were obtained for ternary Zn-Ni-Co.Schematic of the scanning droplet cell microscope and an electrodeposited material library sample

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“…In order to improve the efficiency of the electrodeposition process and the structure of the obtained Co-W deposits organic additives, such as saccharin, thiourea, methacrylate, glycine can be used in the electrolyte. 42 Recently, glycine-based solutions are of interest because it is a non-toxic complexing agent, which stabilizes the pH close to the electrode surface in both alkaline and acidic electrolytes, 43,44 although the side reaction cannot be completely eliminated. Thus, the management of the hydrogen evolution side reaction can be problematic when translating thin film deposition parameters for Co-W alloys to nanometer architectures via templating methods.…”

Section: -38mentioning

confidence: 99%

A Hybrid Approach to Fabricated Nanowire-Nanoparticle Composites of a Co-W Alloy and Au Nanoparticles

Vernickaite

Bubniene

Cesiulis

et al. 2016

J. Electrochem. Soc.

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Co-W nanowires were fabricated by pulsed electrodeposition from a citrate-glycine electrolyte onto rotating cylinder electrodes and into nanoporous polycarbonate membranes. The characterization of the electrodeposition conditions and alloy composition of electrodeposited Co-W alloy thin films were determined and used to guide conditions to electrodeposit the nanowires. Gold nanoparticles of 50 nm size were also added to the electrolyte and deposited during electrodeposition of the Co-W alloy nanowires, embedded within, and attached to the nanowire tip, introducing a novel procedure to attached nanoparticles onto nanowires. Nano-electrodes can be used for various sensing applications, and they can be easily integrated in micro-and nano-scale devices.1 The sensitivity of nano-electrodes depends on the diameter of electrode tip, and the highest sensitivity is observed by most electrochemical methods if the diameter of the working electrode tip is on the same order of the molecular species being detected. To this end, nano-gaping technology has been applied for the fabrication of nano-electrodes that are based on FIB and E-beam lithographic approaches, 2,3 including electrodeposition and/or chemical etching techniques. Gold-based 1D nanostructures (e.g., nanowires, gold nanoparticles) have been recognized as unique materials for electrical and optical sensing applications.5 Gold nanowires can provide high current densities, high signal to noise ratio and low double layer capacitance, 6 while surface plasmon resonance, often exploited with nanoparticles, can uniquely probe interactions of molecules at chemical surfaces and provide label-free bio detection. 5-8Gold nanoparticles (AuNPs) are excellent materials for functionalizing electrode surfaces.9,10 Functionalization can be achieved via the use of bi-functional chemical linking agents, mixing with the components of composite electrodes, covalent binding and others. Notably, gold nanoparticles alone have limited applications in sensing unless surface modification is performed. Careful selection and design of ligands strongly influence the sensitivity and selectivity of a sensor. 5,11 Gold nanoparticles can be synthesized by a citrate reduction method pioneered by Turkevich 12 and later advanced by Frens, 13 with a variety of modification's methods. 6,[14][15][16][17][18] The nanoparticle morphology is dependent upon chemical nanoparticle synthesis methods.Linking agents are typically applied in order to bind gold nanoparticles to surfaces of various substrates. 7,14,[19][20][21][22][23] Surface chemical modification and functionalization using linkers both are attractive methodologies because of highly active and selective layer formation, strong electrode intersectional binding, and changeable physical properties. However, there are a few important disadvantages if linkers are applied in order to design nano-electrodes: additional materials affect surface conductivity and can reduce it or lead to poor electrical contact, and they can shorten an electrode's applica...

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Electrodeposition of CoNiMo thin films using glycine as additive: anomalous and induced codeposition

Cited by 33 publications

References 27 publications

Cobalt–nickel material libraries obtained from electrodeposition using citrate or glycine as additives

Cobalt–nickel material libraries obtained from electrodeposition using citrate or glycine as additives

Preparation and investigation of combinatorially electrodeposited zinc-nickel, zinc-cobalt, and zinc-nickel-cobalt material libraries

A Hybrid Approach to Fabricated Nanowire-Nanoparticle Composites of a Co-W Alloy and Au Nanoparticles

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