Silicon phase origin on glassy carbon in KF-KCl-K 2 SiF 6  fusion

S. I. Zhuk; L. M. Minchenko; O. V. Chemezov; V. B. Malkov; A. V. Isakov; Yu. P. Zaikov

doi:10.15826/chimtech.2014.1.2.1047

Silicon phase origin on glassy carbon in KF-KCl-K₂SiF₆ fusion

S. I. Zhuk, L. M. Minchenko, O. V. Chemezov, V. B. Malkov, A. V. Isakov, Yu. P. Zaikov

Abstract

Silicon nucleation process was invesigated in melt KF-KCl-K₂SiF₆ on glassy carbon substrates at 675 ºС by chronoamperometric method. Using data of the chronoamperograms the linear dependence I – τ^3/2 was constructed. That fact testified the progressive nucleation mode of silicon. As seem from SEM micrographs silicon crystals obtained by a single pulse had different sizes, that also confirmed the progressive nucletion mode.

Keywords

method of chronoamperometry; glass-carbon substrate; electrochemistry, silicon

Full Text:

PDF (RUSSIAN) (Русский)

References

Chemezov OV, Batukhtin VP, Apisarov AP, Isakov AV, Zaikov YuP, inventors; Institute of High-Temperature Electrochemistry UB RAS, assignee. Sposob polucheniya nano- i mikrovolokon kremniya elektrolizom dioksida kremniya iz rasplavov soley. Russian Federation patent RU 2427526. 2011 Aug 27. Russian.

Chemezov OV, Vinogradov-Zhabrov ON, Apisarov AP, Isakov AV, Povolotsky IM, Murzakaev AM, Maolkov VB, Zaikov YuP. Perspektivnyye materialy. 2010;9:277–82. Russian.

Grishenkova OV, Semerikova OL, Isaev VA. Rasplavy [Melts]. 2010;5:56-61. Russian.

Baraboshkin AN. Elektrokristallizatsiya metallov iz rasplavlennykh soley [Electrocrystallization of metals from molten salts]. Moscow: Nauka; 1976. 279 p. Russian.

Bieber AL, Massot L, Gibilaro M, Cassayre L, Taxil P, Chamelot P. Silicon electrodeposition in molten fluorides. Electrochim Acta. 2012;62:282-9. doi:10.1016/j.electacta.2011.12.039

Cai Z, Li Y, He X, Liang J. Electrochemical Behavior of Silicon in the (NaCl-KCl-NaF-SiO2) Molten Salt. Metall Mater Trans B. 2010;41(5):1033-7. doi:10.1007/s11663-010-9393-1

Apisarov AA, Redkin AA, Zaikov YuP, Chemezov OV, Isakov AV. Electrical Conductivity of Molten Fluoride–Chloride Electrolytes Containing K2SiF6 and SiO2. J Chem Eng Data. 2011;56(12):4733-35. doi:10.1021/je200717n

Zhuk SI, Minchenko LM, Chemezov OV, Zaikov YuP. Voprosy khimii i khimicheskoi tekhnologii. 2011;4:195-6. Russian.

DOI: https://doi.org/10.15826/chimtech.2014.1.2.1047

Copyright (c) 2014 S. I. Zhuk, L. M. Minchenko, O. V. Chemezov, V. B. Malkov, A. V. Isakov, Yu. P. Zaikov