Electrodeposition of Silver(I) Selenide from Aqueous Solutions of Thiocyanates

Silver(I) selenide that exhibits pronounced thermoelectric properties is electrodeposited from aqueous solutions containing thiocyanate complexes of silver(I) and Se(IV) compounds at рН 4.7. Ag 2 Se is formed at the cathodic potential more negative than –0.9 V (SHE). The coatings are characterized b...

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Bibliographic Details
Published in:Russian journal of electrochemistry 2023-09, Vol.59 (9), p.683-689
Main Authors: Kuznetsov, V. V., Tyagnerev, E. A., Kapustin, A. V., Zhukov, V. Yu, Filatova, E. A.
Format: Article
Language:English
Subjects:
Aqueous solutions
Cathodic coating (process)
Chemistry
Chemistry and Materials Science
Electrochemistry
Electrodeposition
Microscopy
Photoelectrons
Physical Chemistry
Selenium
Stoichiometry
Thiocyanates
X ray photoelectron spectroscopy
X-ray diffraction
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Summary:Silver(I) selenide that exhibits pronounced thermoelectric properties is electrodeposited from aqueous solutions containing thiocyanate complexes of silver(I) and Se(IV) compounds at рН 4.7. Ag 2 Se is formed at the cathodic potential more negative than –0.9 V (SHE). The coatings are characterized by the methods of scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and atomic-force microscopy (AFM). The stoichiometry of the cathodic deposit is close to Ag 2 Se. XRD studies demonstrated the formation of the orthorhombic modification of silver(I) selenide under electrodeposition conditions. The cathodic deposits have the columnar nanostructure.
ISSN:1023-1935
1608-3342
DOI:10.1134/S1023193523090094