Determination of phase equilibria in the CuxZryCr1-ySe2 system by the EMF method

• Published in: Materials letters Vol. 353; p. 135222
• Main Authors: Postnikov, M.S., Suslov, E.A., Kuznetsova, A.Yu, Shkvarin, A.S.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15-12-2023
• Subjects: Coulometric titration; Dichalcogenides; Intercalation; Phase equilibria; Phase equilibria; Coulometric titration; Intercalation; Dichalcogenides
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2023.135222

[Display omitted]
•Layered materials ZrSe2, CuZrSe2, and CuCr0.8Zr0.2Se2 were synthesized.•Structure of the Cu1ZrSe2 and Cu1Cr0.8Zr0.2Se2 compounds was determined.•The phase states were determined by EMF methods with electrochemical cells.•Substituting Zr4+ for Cr3+ in the CuxZryCr1-ySe2 system increases the potential.•The copper diffusion coefficients for CuZrSe2 and CuCr0.8Zr0.2Se2 were estimated.
Layered materials ZrSe2, CuZrSe2 and CuCr0.8Zr0.2Se2 were synthesized, and the structure of the obtained compounds was determined. The phase states in CuxZrSe2 and CuxZr0.2Cr0.8Se2 systems were determined by coulometric titration and electromotive force methods. An increase in the potential difference in the electrochemical cells Cu|Cu+|CuxZryCr1-ySe2 upon substituting Zr4+ for Cr3+ (0 < x < 0.5) was also noted. The copper diffusion coefficients for CuZrSe2 and CuCr0.8Zr0.2Se2 were estimated to be 10─9 and 10─10 respectively.