Magnesium deposition

In order to explain the results of EQCM and microscopy, it was postulated that in aU the solutions studied the deposition occurs as a two-stage process. Initially, when the amount of charge involved is small (< 0.4 C cm ), a porous and irregular-in-shape magnesium deposit is formed. EDAX spectra of the electrode in a solution of 5g revealed that this initial deposit contains, in addition to magnesium, also carbon and chlorine. This means... 

Magnesium deposition is even more difficult and, in fact, impossible in most of the commonly used polar aprotic solvents containing normal Mg salts [e.g., Mg(C104)2, Mg(S03CF3)2, etc.]. 

Electrodeposition and dissolution of magnesium film were studied from the ionic liquid of [BmimJBF with 1 MMgfCFjSOj) at room temperature by Nuli et al. [176, 177]. It was shown that magnesium can be electrodeposited on Ag substrate and the deposits were dense. They also smdied the electrochemical magnesium deposition and dissolution on metal substrates in organic electrolyte... 

Feng ZZ, Null Y, Wang JL et al (2006) Study of key factors influencing electrochemical reversibility of magnesium deposition and dissolution. J Electrochem Soc 153 C689-C693... 

Deposit on magnesium Deposit on nickel Deposit on lead ... 

Furthermore, in silicone implants, calcification of silicone breast implant capsules has been reported in previous studies (Bantick and Taggart, 1995 Giimus, 2009 Peters and Smith, 1995 Peters et al., 2001 Siggelkow et al., 2003) and is suggested as an important factor for implant failure. A long-term study on silicone toe implants (Smetana and Vencalkova, 2003) also reported evidence of calcification in fifteen of its cases. Encrustation of silicone, PU and latex urinary catheters with evidence of calcium and magnesium deposits on the surface of the material has also been reported (Cox et al., 1988 Desgrandchamps et al., 1997 Hukins et al., 1983 Talja et al., 1990). 

Metallic magnesium was successfully deposited by potentiostatic electrolysis in a LiTFSI-CsTFSI eutectic melt containing Mg(TFSI)2 (2 mol% added) at 200 C. The combination of a Mg(TFSI)2 ion source and an elevation of temperature is preferable for magnesium deposition in a LiTFSI-CsTFSI eutectic melt. 

Liebenow, C. (1997) Reversibility of electrochemical magnesium deposition from Grignard solutions. J. Appi. Electrochem, 27,221-225. 

Aurbach, D., Moshkovich, M., Schechter, A., and Turgeman, R. (2000) Magnesium deposition and dissolution processes in ethereal Grignard salt solutions using simultaneous EQCM-EIS and in situ ETIR spectroscopy. Electrochem. Solid-State Lett, 3, 31. 

NuLi, Y, Yang, J., Wang, i.etal. (2005) Electrochemical magnesium deposition and dissolution with high efficiency in ionic liquid. Electrochem. Solid-State Lett, 8, C166. 

Key words magnesium, rechargeable batteries, intercalation, magnesium deposition, non-aqueous electrolyte solutions. 

We explored in depth the mechanism of Mg deposition from these solutions [55]. The fact that the conductivity of the solutions in which magnesium electrodes are reversible is only a few millisiemens per centimeter, and the overvoltage for magnesium deposition may not be negligible, makes the application of a stationary microelectrode technique for the study of the electrochemical behavior of magnesium electrodes very advantageous. 

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