Growth of non-branching Ag nanowiresvia ion migrational-transport controlled 3D electrodeposition

Chen, Ding; Tian, Cuifeng; Krupke, Ralph; Fang, Jixiang

doi:10.1039/c1ce05686g

Cited by 15 publications

(14 citation statements)

References 21 publications

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“…Following the classical Wranglen definition of a dendrite, 18,19 the dendrites of Pb belong to 2D (two-dimensional) primary (P) type dendrites. The lead dendrites were very similar to those obtained in silver electrodeposition processes from nitrate electrolytes, [20][21][22] indicating the strong dependence of the shape of dendrites on the affiliation to the determined group of metals. Zinc also belongs to the group of normal metals characterized by j 0 → ∞, but the shape of the polarization curve was completely different from those characteristic for Pb.…”

Section: Experimental Verification Of the Simulated Polarization Curvsupporting

confidence: 70%

The shape of the polarization curve and diagnostic criteria for control of the metal electrodeposition process

Popov¹,

Živković²,

Jokić³

et al. 2016

JSCS

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The simulated shapes of the polarization curves were correlated with the type of metal electrodeposition process control as a function of the ratio of the exchange current density to the limiting diffusion current density (j 0 /j L). Diagnostic criteria based on the j 0 /j L ratios were established. For j 0 /j L > 100, the system is under the ohmic control. In the range 1 < j 0 /j L ≤ 100, there is mixed ohmic-diffusion control. Pure diffusion control appears in the range 0.1 < j 0 /j L ≤ 1. For j 0 /j L ≤ 0.1, the system is activation controlled at low overpotentials. The proposed diagnostic criteria were verified by comparison of the simulated curves with experimentally recorded ones and by morphological analysis of deposits obtained under the different types of control of the metal electrodeposition process.

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Section: Experimental Verification Of the Simulated Polarization Curvsupporting

confidence: 70%

The shape of the polarization curve and diagnostic criteria for control of the metal electrodeposition process

Popov¹,

Živković²,

Jokić³

et al. 2016

JSCS

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show abstract

“…Electrodeposition processes of the normal metals are accompanied by formation of various morphological forms, such as granules, crystals of regular and irregular shapes, needle-like and spongy-like particles, dendrites, etc. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] During many years systematic investigations, 24,25 differences in formation of the morphological forms of these metals were specified. It is concluded that Pb and Zn can be denoted as the limiting cases from the group of the normal metals.…”

Section: Introductionmentioning

confidence: 99%

Estimation of the exchange current density and comparative analysis of morphology of electrochemically produced lead and zinc deposits

Nikolić

Živković²,

Branković

et al. 2017

JSCS

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The processes of lead and zinc electrodeposition from the very dilute electrolytes were compared by the analysis of polarization characteristics and by the scanning electron microscopic (SEM) analysis of the morphology of the deposits obtained in the galvanostatic regime of electrolysis. The exchange current densities for lead and zinc were estimated by comparison of experimentally obtained polarization curves with the simulated ones obtained for the different the exchange current density to the limiting diffusion current density ratios. Using this way for the estimation of the exchange current density, it is shown that the exchange current density for Pb was more than 1300 times higher than the one for Zn. In this way, it is confirmed that the Pb electrodeposition processes are considerably faster than the Zn electrodeposition processes. The difference in the rate of electrochemical processes was confirmed by a comparison of morphologies of lead and zinc deposits obtained at current densities which corresponded to 0.25 and 0.50 values of the limiting diffusion current densities.

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“…[2][3][4] Although dendrites are the most common shape of powder particles obtained by electrolysis, some other morphological forms, such as flakes, fibres, sponges, nanowires and cauliflower-like structures, can be also obtained. [2][3][4][5][6][7] The shape of the dendrites of normal metals is completely different from those belonging to the intermediate and inert metals. The 2D (two-dimensional) needlelike and fern-like dendrites, very similar to each other, are usually formed by electrodeposition of normal metals.…”

Section: Introductionmentioning

confidence: 99%

Morphological and crystallographic characteristics of electrodeposited lead from a concentrated electrolyte

2013

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Electrodeposition of lead from a concentrated nitrate solution was examined by scanning electron microscopy (SEM) and by X-ray diffraction (XRD) analysis of the obtained powder particles. Single crystals of the (111) preferred orientation were formed at a low overpotential by ohmic controlled electrodeposition. Irregular crystals, needle-like and fern-like dendrites, predominantly of the (111) preferred orientation, were formed at high overpotentials (the diffusion control of the electrodeposition). The ratio of Pb crystallites oriented in the (200), (220), (311) and (331) planes increased with increasing electrodeposition overpotential. The correlation between the morphologies and crystallographic structures of the lead deposits was discussed by the consideration of general characteristics of growth layers in electrodeposition processes.

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Growth of non-branching Ag nanowiresvia ion migrational-transport controlled 3D electrodeposition

Cited by 15 publications

References 21 publications

The shape of the polarization curve and diagnostic criteria for control of the metal electrodeposition process

The shape of the polarization curve and diagnostic criteria for control of the metal electrodeposition process

Estimation of the exchange current density and comparative analysis of morphology of electrochemically produced lead and zinc deposits

Morphological and crystallographic characteristics of electrodeposited lead from a concentrated electrolyte

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