Effect of shaped waveform on structure and electrochemical corrosion behavior of pulse electrodeposited Ni Cu alloy coatings

Geramipour, F.; Khoei, Seyed Mohammad Mousavi; Gugtapeh, Hamed Shooshtari

doi:10.1016/j.surfcoat.2021.127643

Cited by 15 publications

(8 citation statements)

References 42 publications

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“…38,39 The ions may diffuse anywhere to the less concentrated region; even the ions may move to the intricate deposition structures. 38 Interestingly, apart from the square pulse, various other pulses of different forms are also investigated 1 to determine their effects on the structural property and corrosion behavior of the electrodeposited material. However, any form of pulse (involving t off ) comes with an additional operational cost incurred from the enhanced cell charging time.…”

Section: Introductionmentioning

confidence: 99%

“…The morphology of metal electrodeposits determines the quality of electro-coated surfaces. − Such morphological aberrations and allied instabilities in rechargeable batteries are a leading cause of battery failure. These structures, particularly, their nucleation and growth, − are critical challenges for metal anode-based batteries despite their promise of high specific capacity (e.g., lithium).…”

Section: Introductionmentioning

confidence: 99%

“…The absence of electro-migration during t off is the leading cause for the reduction of the dendritic growth in pulse charging as during this period, the propensity of the localized deposition of ions on the growing tip is reduced. , The ions may diffuse anywhere to the less concentrated region; even the ions may move to the intricate deposition structures . Interestingly, apart from the square pulse, various other pulses of different forms are also investigated to determine their effects on the structural property and corrosion behavior of the electrodeposited material. However, any form of pulse (involving t off ) comes with an additional operational cost incurred from the enhanced cell charging time.…”

Section: Introductionmentioning

confidence: 99%

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Mechanistic Underpinnings of Morphology Transition in Electrodeposition under the Application of Pulsatile Potential

Dhara

Ghosh

et al. 2022

Langmuir

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We quantitatively investigate the role of voltage fluctuation in terms of different waveforms on the electrodeposition dynamics and morphology for varying electrolyte concentrations. Dependent on the electrolyte concentration, a wide range of morphologies ranging from highly branched dendrites to comparatively closed packed electrodeposits has been captured. We mechanistically map the deposition dynamics by image analysis and demonstrate the highly porous dendritic dynamics to be independent of external perturbation. Additionally, comparatively closed packed morphological features show significant sensitivity toward the frequency and nature of the waveforms. The results provide fundamental insights into the correlation between the time scales of voltage fluctuation and growth dynamics. We comprehensively analyze the effect of the waveform nature on the average deposition height and show sinusoidal fluctuation to be preferred over square and pulse for metal batteries for lower deposition heights.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanistic Underpinnings of Morphology Transition in Electrodeposition under the Application of Pulsatile Potential

Dhara

Ghosh

et al. 2022

Langmuir

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“…Taking the structure of Figure 3a as an example, the edge of 1 st Cu layer pattern is the closest position from the soldering via. Meanwhile, the existence of electric potential difference have a joint impact on the device, thus leading to the electrochemical corrosion [8][9] . Here 1 st Cu layer pattern joins the reduction reaction cathode.…”

Section: Theoretical Analysis Of Dgs Issuementioning

confidence: 99%

P‐54: Research On DGS Character Of Glass Based Mini LED BLU

Jia-wei,

Hai-wei,

Zong-jie

et al. 2023

Symp Digest of Tech Papers

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This paper introduces the research on the elements that could lead to the DGS issue of Mini LED BLU, as well as a theoretical model built based on the research result. By performing a variety of experiments studying the relationship between several elements, this DGS issue was confirmed to be caused by electrochemical corrosion under the joint impact of water steam infiltrate and electric potential difference between metal pattern on the product. In this specific circumstance, the two necessary condition for DGS issue to happen are electric potential difference between 2 nd Cu layer pattern in LED zone and 1 st Cu layer pattern on the G‐ bus, and the water steam infiltrated from the via hole left for the LED chip soldering. The water steam infiltrated then diffuse through the 1 st Resin layer and the time cost for the water steam to reach the position where electric potential difference exists is in a direct proportion to the distance from such point to the soldering via. Moreover, the larger that electric potential difference is, the higher probability of DGS issue happening is, while the relationship between this probability and the distance mentioned previously is in an opposite way. Overall, by applying several optimization such cancelling the hedgehopping 1 st Cu pattern and adding extra inorganic insulating layer protection on the design of product, and applying an extra cathode protection design, the DGS issue was significantly resolved.

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“…Therefore, they have been widely used in the field of marine engineering, such as boiler components, heat exchanger tubes, boat hulls, seawater condensers, valve bodies, oil platforms, and other ship hardware [ 8 ]. Numerous studies have shown that Cu-Ni alloy coatings prepared by electroplating technology have a high strength and excellent corrosion resistance in many harsh environments, such as seawater, oxidizing and reducing gas environments, and alkaline and acidic media [ 9 , 10 , 11 ]. However, Cu-Ni alloy coatings still cannot meet the rigorous service requirements of the complex and changeable marine environments.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of (Cu, Ni) Co-Doped ZnO Nanoparticle-Reinforced Cu-Ni Nanocomposite Coatings

Tan

Yang

et al. 2023

Materials

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Here, 2% Cu + 2% Ni co-doped ZnO nanoparticles were synthesized using the hydrothermal method and were used as particle reinforcements of Cu-Ni nanocomposite coatings prepared by electroplating technology. The effects of the added (Cu, Ni) co-doped ZnO nanoparticles (2–8 g/L) on the phase structure, surface morphology, thickness, microhardness, corrosion resistance, and photocatalytic properties of the coatings were investigated. The nanocomposite coatings have obvious diffraction peaks on the crystal planes of (111), (200), and (220), showing a wurtzite structure. The surface of the nanocomposite coatings is cauliflower-like, and becomes smoother and denser with the increase in the addition of nanoparticles. The grain size, thickness, microhardness, corrosion resistance, and photocatalytic properties of the nanocomposite coating reach a peak value when the added (Cu, Ni) co-doped ZnO nanoparticles are 6 g/L. At this concentration, the mean crystallite size of the coating reaches a minimum of 15.31 nm, and the deposition efficiency of the coating is the highest. The (Cu, Ni) co-doped ZnO nanoparticle reinforcement makes the microhardness reach up to 658 HV. The addition of nanoparticles significantly improves the corrosion resistance and photocatalytic properties of nanocomposite coatings. The minimum corrosion current density is 2.36 × 10−6 A/cm2, the maximum corrosion potential is −0.301 V, and the highest decolorization rate of Rhodamine B is 28.73% after UV irradiation for 5 h.

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Effect of shaped waveform on structure and electrochemical corrosion behavior of pulse electrodeposited Ni Cu alloy coatings

Cited by 15 publications

References 42 publications

Mechanistic Underpinnings of Morphology Transition in Electrodeposition under the Application of Pulsatile Potential

Mechanistic Underpinnings of Morphology Transition in Electrodeposition under the Application of Pulsatile Potential

P‐54: Research On DGS Character Of Glass Based Mini LED BLU

Preparation and Properties of (Cu, Ni) Co-Doped ZnO Nanoparticle-Reinforced Cu-Ni Nanocomposite Coatings

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