Theoretical and experimental study of the interaction of O2 and H2O with metallic zinc—discussion of the initial step of oxide formation

Alimenti, Graciela Alicia; Gschaider, M. E.; Bazán, J.C.; Ferreira, Marı́a Luján

doi:10.1016/j.jcis.2004.03.042

Cited by 14 publications

(6 citation statements)

References 37 publications

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“…[26][27][28] Desorption of hydrogen from ZnO has been reported by Nickel and coauthors. [19][20][21][22]29 Prior to both Zn vapor anneals, the ZnO samples were annealed with hydrogen-depleted Ti in order to remove hydrogen content from the ZnO (Fig.…”

Section: Experimental Procedures and Resultsmentioning

confidence: 84%

Oxygen Deficiency and Hydrogen Turn ZnO Red

Weber

Parmar

Jones

et al. 2010

Journal of Elec Materi

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The effect of hydrogen on ZnO while annealing at 1370 K under oxygen-poor conditions with excess Zn vapor or Ti metal is studied. ZnO turns red only when hydrogen is present in a complex with oxygen vacancies. A practical method is described to remove hydrogen from ZnO in a sealed ampoule and to bind it to Ti metal. Hydrogen coupled to an oxygen vacancy is the simplest defect to explain the observations. The coloration is reversible at 1370 K by adding or removing hydrogen, consistent with an activation energy >1.5 eV. In red ZnO Hall data show a shallow donor level around 45 meV.

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Section: Experimental Procedures and Resultsmentioning

confidence: 84%

Oxygen Deficiency and Hydrogen Turn ZnO Red

Weber

Parmar

Jones

et al. 2010

Journal of Elec Materi

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“…Such a layer is likely to originate from the initial exposure of the Zn nanoparticles to air and moisture. However, it does not further grow significantly when the Zn particles are in contact with air and water, as demonstrated by the experimental findings of Funke et al [ 47 ], and by the low zinc corrosion rates [ 13 , 15 , 16 ], considering the short time frame of the electrode-particle experiments (c.a. 5 min).…”

Section: Resultsmentioning

confidence: 93%

“…The kinetics of the electrodeposition and their (weak) potential dependence suggest that de-complexation and/or dehydration step plays a significant role in controlling the rate of the reaction. Despite the zinc deposition/dissolution reaction having been studied for many years mainly for corrosion and electrodeposition applications [12][13][14][15][16][17], further studies of the reaction kinetics are needed in the solutions that are to be employed in Zn-ion batteries. Moreover, particular attention should be given to the reaction kinetics studies at the nanoscale, since nanocomposite and nanostructured Zn-based electrodes are very promising for the development of stable, efficient, and long-lasting negative electrodes for aqueous Zn-ion batteries.…”

Section: Discussionmentioning

confidence: 99%

“…The major problems yet to be solved involving the metallic zinc electrode are related to the hydrogen evolution reaction occurring in parallel to the Zn deposition reaction [9][10][11], and the non-uniform deposition of metallic Zn leading to the formation of dendrites, and consequently to short-circuit of the electrodes [11]. Despite the fact that the zinc deposition and dissolution reaction has been studied for decades, mainly for corrosion and electrodeposition applications [12][13][14][15][16][17], further investigations are yet needed regarding the Zn reaction mechanisms in the solutions employed within the Zn-ion batteries. Several studies have shown that the reaction mechanism of the zinc deposition and dissolution reaction differs strongly in the dependence on the electrolyte in terms of the type of solvent (i.e., organic or water based), pH, anions, cations, complexing…”

Section: Introductionmentioning

confidence: 99%

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Fast electrodeposition of zinc onto single zinc nanoparticles

Zampardi

Compton

2020

J Solid State Electrochem

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The zinc deposition reaction onto metallic zinc has been investigated at the single particle level through the electrode-particle collision method in neutral solutions, and in respect of its dependence on the applied potential and the ionic strength of a sulphatecontaining solution. Depending on the concentration of sulphate ions in solution, different amounts of metallic zinc were deposited on the single Zn nanoparticles. Specifically, insights into the electron transfer kinetics at the single particles were obtained, indicating an electrically early reactant-like transition state, which is consistent with the rate-determining partial dehydration/de-complexation process. Such information on the reaction kinetics at the nanoscale is of vital importance for the development of more efficient and long-lasting nanostructured Zn-based negative electrodes for Zn-ion battery applications.

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“…In this paper, we focus on the challenges of reaction (2). Prior work has shown that kinetics are slow for hydrolysis of solid or liquid Zn particles due to the formation of a ZnO layer on the surface through which the reactants must diffuse (Delalu et al, 2000;Alimenti et al, 2004;Bazan et al, 1999;Berman and Epstein, 2000; 2000). Much attention has been given to reacting aerosols of Zn nanoparticles as a solution to this challenge (Weiss et al, 2005;Wegner et al, 2006;Ernst et al, 2006;Melchior et al, 2009;Abu Hamed et al, 2007Funke et al, 2008;Ernst et al, 2009;Vishnevetsky and Epstein, 2007;Park et al, 2005;Rai et al, 2006).…”

Section: Introductionmentioning

confidence: 99%