Investigation of anomalous copper hydride phase during magnetic field-assisted electrodeposition of copper

Yin, Denise; Murdoch, Heather A.; Hornbuckle, B.C.; Hernández–Rivera, Efraín; Dunstan, Matthew K.

doi:10.1016/j.elecom.2018.11.018

Cited by 11 publications

(5 citation statements)

References 41 publications

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“…The importance of H ads in electrocatalytic hydrogenation reactions, such as CO 2 reduction to hydrocarbon and oxygenates on Cu surfaces, are just beginning to be explored. The present results provide new insights and further motivation to examine the role of H ads in guiding the selectivity and efficiency of hydrogenation reactions, in ways that may be analogous to prior work in homogeneous catalysis involving Cu–H bonds. , Likewise, these results provide hints as to the possible role of proton reduction and hydride formation in the electrodeposition of Cu at high overpotentials, along with the impact of H on microstructural evolution. , …”

Section: Results and Discussionsupporting

confidence: 55%

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Quantification of Hydride Coverage on Cu(111) by Electrochemical Mass Spectrometry

Raciti

Moffat

2022

J. Phys. Chem. C

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Electrochemical mass spectrometry (EC-MS) is combined with chronoamperometry to quantify H coverage associated with the surface hydride phase on Cu(111) in 0.1 mol/L H2SO4. A two-step potential pulse program is used to examine anion desorption and hydride formation, and the inverse, by tracking the 2 atomic mass unit (amu) signal for H2 production in comparison to the charge passed. On the negative potential step, the reduction current is partitioned between anion desorption, hydride formation, and the hydrogen evolution reaction (HER). For modest overpotentials, variations in partial processes are evident as inflections in the chronoamperometry and EC-MS signal. On the return step to positive potentials, hydride decomposition by H recombination to H2 occurs in parallel with sulfate adsorption. The challenge associated with the inherent diffusional delay in the EC-MS response is mitigated by total H2 collection and steady-state analysis facilitated by the thin-layer EC-MS cell geometry as demonstrated for the HER on a non-hydride forming Ag electrode. Analysis of the respective transients and steady-state response on Cu(111) reveals a saturated hydride fractional coverage of 0.67 at negative potentials with an upper bound charge of 106 μC/cm2 (average electrosorption valency of ≈1.76) associated with adsorption of the (√3 × √7) mixed sulfate-water adlayer at positive potentials.

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Section: Results and Discussionsupporting

confidence: 55%

“…33,34 Likewise, these results provide hints as to the possible role of proton reduction and hydride formation in the electrodeposition of Cu at high overpotentials, along with the impact of H on microstructural evolution. 35,36…”

Section: Thementioning

confidence: 99%

Quantification of Hydride Coverage on Cu(111) by Electrochemical Mass Spectrometry

Raciti

Moffat

2022

J. Phys. Chem. C

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“…For example, surprisingly high faradaic efficiency for CO 2 products on Cu electrodes is reported in acid electrolytes even though the high hydronium concentration might be expected to favor hydrogen evolution . Indeed, the role of surface and subsurface H in hydrogenation reactions remains a subject of fundamental interest in electrodeposition and electro-organic synthesis. − Accordingly, an understanding of the complex reactions involved in hydrogenation of CO 2 and other molecules requires measurements of the potential-dependent interactions between hydrogen and Cu.…”

mentioning

confidence: 99%

Surface Hydride Formation on Cu(111) and Its Decomposition to Form H₂ in Acid Electrolytes

Tackett

Raciti

Walker

et al. 2021

J. Phys. Chem. Lett.

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Mass spectrometry and Raman vibrational spectroscopy were used to follow competitive dynamics between adsorption and desorption of H and anions during potential cycling of three low-index Cu surfaces in acid electrolytes. Unique to Cu(111) is a redox wave for surface hydride formation coincident with anion desorption, while the reverse reaction of hydride decomposition with anion adsorption yields H 2 by recombination rather than oxidation to H 3 O + . Charge imbalance between the reactions accounts for the asymmetric voltammetry in SO 4 2− , ClO 4 − , PO 4 3− , and Cl − electrolytes with pH 0.68−4.5. Two-dimensional hydride formation is evidenced by the reduction wave prior to H 2 evolution and vibrational bands between 995 and 1130 cm −1 . In contrast to Cu(111), no distinct voltammetric signature of surface hydride formation is observed on Cu(110) and Cu(100). The Cu(111) hydride surface phase may serve to catalyze hydrofunctionalization reactions such as CO 2 reduction to CH 4 and should be broadly useful in electro-organic synthesis.

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“…Booking (1988) coupled laser beam with HSSJED to achieve a high deposition rate at 16 µm/s on a ceramic substrate. Yin et al (2019) performed the electrodeposition in a magnetic field and found that the mass deposition rate was increased for CuH and CuH 2 . Authors developed friction-added jet electrodeposition for Ni coating and found that the surface morphology and magnetic property were improved (Liu et al , 2016).…”

Section: The Present State Of Research On High-speed Selective Jet El...mentioning

confidence: 99%

A systematic review on high speed selective jet electrodeposition manufacturing

Deshmukh

Rajput

Narang

2022

WJE

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Purpose The purpose of this paper is to present current state of understanding on jet electrodeposition manufacturing; to compare various experimental parameters and their implication on as deposited features; and to understand the characteristics of jet electrodeposition deposition defects and its preventive procedures through available research articles. Design/methodology/approach A systematic review has been done based on available research articles focused on jet electrodeposition and its characteristics. The review begins with a brief introduction to micro-electrodeposition and high-speed selective jet electrodeposition (HSSJED). The research and developments on how jet electrochemical manufacturing are clustered with conventional micro-electrodeposition and their developments. Furthermore, this study converges on comparative analysis on HSSJED and recent research trends in high-speed jet electrodeposition of metals, their alloys and composites and presents potential perspectives for the future research direction in the final section. Findings Edge defect, optimum nozzle height and controlled deposition remain major challenges in electrochemical manufacturing. On-situ deposition can be used as initial structural material for micro and nanoelectronic devices. Integration of ultrasonic, laser and acoustic source to jet electrochemical manufacturing are current trends that are promising enhanced homogeneity, controlled density and porosity with high precision manufacturing. Originality/value This paper discusses the key issue associated to high-speed jet electrodeposition process. Emphasis has been given to various electrochemical parameters and their effect on deposition. Pros and cons of variations in electrochemical parameters have been studied by comparing the available reports on experimental investigations. Defects and their preventive measures have also been discussed. This review presented a summary of past achievements and recent advancements in the field of jet electrochemical manufacturing.

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Investigation of anomalous copper hydride phase during magnetic field-assisted electrodeposition of copper

Cited by 11 publications

References 41 publications

Quantification of Hydride Coverage on Cu(111) by Electrochemical Mass Spectrometry

Quantification of Hydride Coverage on Cu(111) by Electrochemical Mass Spectrometry

Surface Hydride Formation on Cu(111) and Its Decomposition to Form H₂ in Acid Electrolytes

A systematic review on high speed selective jet electrodeposition manufacturing

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Investigation of anomalous copper hydride phase during magnetic field-assisted electrodeposition of copper

Cited by 11 publications

References 41 publications

Quantification of Hydride Coverage on Cu(111) by Electrochemical Mass Spectrometry

Quantification of Hydride Coverage on Cu(111) by Electrochemical Mass Spectrometry

Surface Hydride Formation on Cu(111) and Its Decomposition to Form H2 in Acid Electrolytes

A systematic review on high speed selective jet electrodeposition manufacturing

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Product

Resources

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Surface Hydride Formation on Cu(111) and Its Decomposition to Form H₂ in Acid Electrolytes