Mechanism of the Formation of Zinc Dendrites

Despić, A.R.; Diggle, John W.; Bockris, J. O'm.

doi:10.1149/1.2411297

Cited by 101 publications

(60 citation statements)

References 4 publications

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“…The kinetic results evaluated from the Butler-Volmer fit at potentials of electrodeposited zinc at − 1.6 V and the standard bulk zinc is in agreement with the literature. [22][23][24][25][26][27][28][29] At applied potentials above − 1.6 V, more rapid kinetics were evident: we observed an increased exchange current of 36.8 ± 4.3 mA at − 2.0 V in comparison with 12.9 ± 0.5 mA for the standard. In addition to the evidence of more rapid kinetics, the anodic and cathodic Tafel slopes were calculated at 212.9 ± 5.1 and 190.1 ± 4.7 mV dec −1 at − 2.0 V in comparison with 125.6 ± 7.5 and 107.3 ± 1.5 mV dec −1 for the standard.…”

Section: Resultsmentioning

confidence: 94%

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Hyper-dendritic nanoporous zinc foam anodes

et al. 2015

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The low cost, significant reduction potential and relative safety of the zinc electrode is a common hope for a reductant in secondary batteries, but it is limited mainly to primary implementation due to shape change. In this work, we exploit such shape change for the benefit of static electrodes through the electrodeposition of hyper-dendritic nanoporous zinc foam. Electrodeposition of zinc foam resulted in nanoparticles formed on secondary dendrites in a three-dimensional network with a particle size distribution of 54.1-96.0 nm. The nanoporous zinc foam contributed to highly oriented crystals, high surface area and more rapid kinetics in contrast to conventional zinc in alkaline mediums. The anode material presented had a utilization of 88% at full depth-of-discharge (DOD) at various rates indicating a superb rate capability. The rechargeability of Zn 0 /Zn 2+ showed significant capacity retention over 100 cycles at a 40% DOD to ensure that the dendritic core structure was imperforated. The dendritic architecture was densified upon charge-discharge cycling and presented superior performance compared with bulk zinc electrodes.

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Section: Resultsmentioning

confidence: 94%

“…[22][23][24][25][26][27][28][29] Cathodic Tafel slope values of~120 mV dec −1 and cathodic charge transfer coefficient of~0.55 are suggested. The kinetic results evaluated from the Butler-Volmer fit at potentials of electrodeposited zinc at − 1.6 V and the standard bulk zinc is in agreement with the literature.…”

Section: Resultsmentioning

confidence: 99%

Hyper-dendritic nanoporous zinc foam anodes

et al. 2015

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“…From the electrochemical point of view, a dendrite can be defined as an electrode surface protrusion that grows under activation or mixed control, while deposition to the flat part of the electrode surface is under complete diffusion control [2,17,20].…”

Section: The Essence Of Dendritic Deposits Formationmentioning

confidence: 99%

Electrochemical aspects of formation of dendrites

Popov¹,

Živković²,

Nikolić³

2016

Zas Mat

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The one of the main contributions of Belgrade Electrochemical School to the field of metal electrodeposition is investigation of a mechanism of formation and growth of the disperse deposits. Spongy-like, cauliflower-like, needle-like, carrot-like, dendrites of various shapes, etc In these publications all aspects of morphology of electrodeposited metal are discussed, from dendritic growth initiation and dendritic growth [2,3,11] to the bright deposits formation [2,3,8] and the effect of hydrogen co-deposition on morphology of electrodeposits [3,9,14]. One of the most important conclusion derived by BES is the mechanism of disperse deposits formation, based on different behaviour of the macroelectrodes and microelectrodes under the same conditions of electrodeposition. The aim of this article is to discuss this phenomenon in the way given in [11] for the growth of dendrites.

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“…[46] and references therein). A strong argument against dendritic growth in this work is that the deposition transients do not show a characteristic (for dendritic growth) exponential current increase [45].…”

Section: Mechanistic Aspects Of Pt Electrodeposition On Carbon Substrmentioning

confidence: 76%

“…To explain complex microstructure of electrodeposited metals, dendritic growth is traditionally considered in the literature [32] for electrodeposition of different metals [45][46][47].…”

Section: Mechanistic Aspects Of Pt Electrodeposition On Carbon Substrmentioning

confidence: 99%