Interplay between the deposition mode and microstructure in electrochemically deposited Cu thin films

Kremmer, K.; Yezerska, Olga; Schreiber, Gerhard; Masimov, M.; Klemm, Volker; Schneider, Michael; Rafaja, David

doi:10.1016/j.tsf.2007.01.043

Cited by 19 publications

(10 citation statements)

References 26 publications

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“…This occurred through a dissolutionnucleation process, 26 which allowed relief of microstrains through plastic deformations. 40 This is evident by the cracks visible through the catalyst films. 29 Thus, it is not surprising that no strong correlation could be drawn between the microstrains of Samples A−J and their selectivity toward ethylene formation (SI Section S5).…”

Section: Resultsmentioning

confidence: 99%

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Mechanistic Insights into the Selective Electroreduction of Carbon Dioxide to Ethylene on Cu₂O-Derived Copper Catalysts

et al. 2016

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In this work, we made a comprehensive investigation to unravel the underlying causes for the selectivity of CO2 electroreduction toward ethylene on Cu2O-derived Cu catalysts. Scanning electron microscopy, X-ray diffraction, cyclic voltammetry, chronoamperometry, chronopotentiometry, online gas chromatography, nuclear magnetic resonance spectroscopy, and numerical simulations of local pH were used toward this end. Ten Cu2O-derived Cu films of different thicknesses and morphologies were prepared and extensively characterized. Aqueous 0.1 M KHCO3 was used as the electrolyte. We report here, for the first time, a remarkably strong correlation between the statistically relevant crystallite sizes of the Cu2O-derived Cu particles and selective CO2 electroreduction to C2H4. Specifically, as the crystallite size of the particles decreased from 41 to 18 nm, the Faradaic efficiency (FE) of C2H4 formation increased from 10 to 43%. Using cyclic voltammetry, samples with smaller particle crystallite sizes were found to possess more diverse adsorption sites for CO (a known reaction intermediate), which we interpret to be important for the C–C coupling of C1 adsorbates to C2 intermediates. The effect of local pH on the yield of C2H4 for the different Cu2O-derived Cu catalysts was less significant when compared to the effects of crystallite sizes and mass transport limitations. We also show here that remarkable amounts of C2 and C3 products could be achieved using these Cu2O-derived Cu catalysts. Driven at a fixed total current density of −31.2 mA cm–2, the catalysts could reduce CO2 to C2H4, ethanol, and n-propanol with optimized FEs of 42.6% (j C2H4 = −13.3 mA cm–2), 11.8% (j C2H5OH = −3.7 mA cm–2), and 5.4% (j C3H7OH = −1.7 mA cm–2), respectively.

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Section: Resultsmentioning

confidence: 99%

“…We further note that the Cu 2 O-derived Cu films prepared in this work were formed through the in situ reduction of Cu 2 O. This occurred through a dissolution-nucleation process, which allowed relief of microstrains through plastic deformations . This is evident by the cracks visible through the catalyst films .…”

Section: Resultsmentioning

confidence: 99%

Mechanistic Insights into the Selective Electroreduction of Carbon Dioxide to Ethylene on Cu₂O-Derived Copper Catalysts

et al. 2016

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“…12 A thin electrodeposited Cu film usually exhibits a strong (111) texture because (111) planes have the lowest surface energy among the major low-indices planes. 8 With the increase of film thickness, an increasing strain energy is developed and the (110) texture is favored because (110) planes can accommodate larger strains than (111) planes. Figure 2 shows the texture coefficient ratio, TC (110) /TC (111) , against the film thickness for the DC-and PC-deposited Cu films deposited in the electrolytes with different chloride concentration.…”

Section: Resultsmentioning

confidence: 99%

“…By increasing the peak current density, a transition from (110) to (111) texture occurred due to the anisotropic growth rate of different crystallographic planes in the electrodeposited Cu films. It has also been reported that with increasing negative electrochemical potential the crystallographic texture of Cu films changed from (111) to (110) or (100) orientation, which is attributed to the competition between surface energy and strain energy of Cu crystallites …”

Section: Introductionmentioning

confidence: 95%

“…It has also been reported that with increasing negative electrochemical potential the crystallographic texture of Cu films changed from (111) to (110) or (100) orientation, which is attributed to the competition between surface energy and strain energy of Cu crystallites. 8 In addition to the above-mentioned substrate and current density effects, ingredients of electrolyte also play an important role in electrodeposition of Cu films. The reduction of Cu from Cu 2+ ions in electrolyte usually follows two successive oneelectron transfer reactions shown below…”

Section: Introductionmentioning

confidence: 99%

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Manipulating the Crystallographic Texture of Nanotwinned Cu Films by Electrodeposition

Chan

Chueh

Liao

2011

Crystal Growth & Design

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Electrochemical Patterning of Cu Current Collectors: An Enabler for Pure Silicon Anodes in High‐Energy Lithium‐Ion Batteries

Schlaier

Cangaz

Maletti

et al. 2022

Adv Materials Inter

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Silicon (Si) is considered the most promising anode material for next‐generation high‐energy lithium‐ion batteries. To enable the use of pure Si anodes, patterning is essential to reduce electrode degradation caused by volume changes during cycling. The authors herein report a facile and scalable Cu electrodeposition (Cu‐ECD) process to tailor the topography of Cu current collectors for the directed formation of columnar Si anodes by physical vapor deposition (PVD). ECD parameters, such as Cu concentration, temperature, potential, and deposited amount of Cu, are systematically varied. The most promising ECD parameters are applied to modify commercial Cu foils, which are then used to prepare columnar Si anodes via PVD. Modified current collectors and resulting Si anodes are investigated by scanning electron microscopy (SEM), laser scanning confocal microscopy, and adhesion tests. Selected Si anodes are characterized in battery cells regarding cycling stability. It is shown that the adjustment of the current collector topography results in a significant increase in cycling stability. SEM analysis revealed differences in the mechanical degradation and electrochemical capacity decay. Based on the results, process–structure–property relationships between the topography of the Cu‐ECD current collectors, the resulting columnar Si anodes and their electrochemical performance are derived.

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Interplay between the deposition mode and microstructure in electrochemically deposited Cu thin films

Cited by 19 publications

References 26 publications

Mechanistic Insights into the Selective Electroreduction of Carbon Dioxide to Ethylene on Cu₂O-Derived Copper Catalysts

Mechanistic Insights into the Selective Electroreduction of Carbon Dioxide to Ethylene on Cu₂O-Derived Copper Catalysts

Manipulating the Crystallographic Texture of Nanotwinned Cu Films by Electrodeposition

Electrochemical Patterning of Cu Current Collectors: An Enabler for Pure Silicon Anodes in High‐Energy Lithium‐Ion Batteries

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Interplay between the deposition mode and microstructure in electrochemically deposited Cu thin films

Cited by 19 publications

References 26 publications

Mechanistic Insights into the Selective Electroreduction of Carbon Dioxide to Ethylene on Cu2O-Derived Copper Catalysts

Mechanistic Insights into the Selective Electroreduction of Carbon Dioxide to Ethylene on Cu2O-Derived Copper Catalysts

Manipulating the Crystallographic Texture of Nanotwinned Cu Films by Electrodeposition

Electrochemical Patterning of Cu Current Collectors: An Enabler for Pure Silicon Anodes in High‐Energy Lithium‐Ion Batteries

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Product

Resources

About

Mechanistic Insights into the Selective Electroreduction of Carbon Dioxide to Ethylene on Cu₂O-Derived Copper Catalysts

Mechanistic Insights into the Selective Electroreduction of Carbon Dioxide to Ethylene on Cu₂O-Derived Copper Catalysts