2013
DOI: 10.1039/c3cp44714f
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Electronic structure and morphology of dark oxides on zinc generated by electrochemical treatment

Abstract: Oxides formed by electrochemical treatment of metals frequently have properties and structures very different from the respective bulk oxides. Here, electronic structure and chemical composition were investigated for the oxide formed on polycrystalline zinc after electrochemical oxidation, and after subsequent reduction, in a Na2CO3 electrolyte. Photoluminescence and spectroscopic ellipsometry show the presence of states deep in the ZnO band gap in the oxidized sample, which consists of a highly disordered oxi… Show more

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Cited by 32 publications
(49 citation statements)
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References 44 publications
(119 reference statements)
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“…A low‐intensity peak present around 330 cm −1 originates from a multi‐phonon process . Spectra as observed here are typical for defect‐rich ZnO, obtained in electrochemical or corrosion processes …”
Section: Resultssupporting
confidence: 63%
“…A low‐intensity peak present around 330 cm −1 originates from a multi‐phonon process . Spectra as observed here are typical for defect‐rich ZnO, obtained in electrochemical or corrosion processes …”
Section: Resultssupporting
confidence: 63%
“…[33], which was confirmed by Raman analysis with the two characteristic peaks at 3450 cm −1 and 3490 cm −1 [34]. The second region in and 1070 cm −1 [34], and Zn (1+x) O defective black oxide with the characteristic peak at 570 cm −1 [35]. …”
Section: 32supporting
confidence: 50%
“…[12] these parameters were D = 10 µm, h = 25 µm and d = 80 µmṄumerical simulations of the primary potential distribution for a disk electrode embedded in an isolator were in a good agreement with experimental results. In the more recent work [13], a spatial resolution of 35 Even though the spatial resolution in the micrometer range can be reached, the precise size of electrochemically active zones did not match their actual size on the admittance maps in LEIM [7,[15][16][17][18]. Moreover, this size was shown to depend on the applied frequency of the AC perturbation [15].…”
Section: Introductionmentioning
confidence: 99%
“…For instance, frequency-domain electrochemical impedance spectroscopy (EIS) provides a facile technique to determine the complex impedance in all components of a cell (electrode, electrolyte, and their interfaces) and the semicircle in the low frequency are always be applied to represent the Li ion transfer resistance through SEI. [73][74][75][76][77][78][79] Thus, EIS affords a universal opportunity to distinguish the impedance from different processes occurring simultaneously at the electrode surface. The relationship of the resistance and cell working temperature were touched upon by Archer and co-workers.…”
Section: Electrochemical Propertiesmentioning
confidence: 99%