Electrochemistry of Organoaluminum Compounds

Abstract

In this chapter, selected and the most important aspects of the electrochemistry of organoaluminum compounds are described. It is focused on two main implementations: electrochemical aluminum plating and rechargeable Mg batteries. Electrochemical aspects of organoaluminum‐based electroplating baths are discussed in detail and the effects of the solutions formulation on the electrochemical properties are explained. The role of organoaluminum compounds, acting as Lewis acids, in the formulation of the electrolyte solutions for rechargeable Mg batteries, and their effect on the performance of electrolyte solutions is described.

Magnesium Anthracene System-Based Electrolyte as a Promoter of High Electrochemical Performance Rechargeable Magnesium Batteries

“…However, without incorporation of additional anion, low Mg plating/ stripping kinetic is observed. A stable and reversible magnesium plating/stripping was reported for Mg(TFSI) 2 in dimethoxyethane (DME) and Mg(TFSI) 2 in glyme only after addition of MgCl 2 or Mg(BH 4 ) 2 ; 28,29 chloride addition helps overcome the passivation of the Mg electrode 30 and facilitate the Mg plating/ stripping process because of the formation of binuclear complex, [Mg 2 (μ-Cl) 2 ] 2+ , as intermediate. 19 A clever approach was to use Mg coordinating agent such as cyclopentadienyl to form a magnesium stable complex, that is, magnesocene, 31 which enables one to obtain reversible Mg plating/stripping process.…”

Solvation, Rational Design, and Interfaces: Development of Divalent Electrolytes

“…(Han et al, 2016;Lipson et al, 2016). To combat these disadvantages, the addition of MgCl 2 to relatively weakly coordinating anion electrolytes tends to improve performance through formation of complex [Mg x Cl y ] + species that reduce cation-anion association (Shterenberg et al, 2015;Gao et al, 2017;Shterenberg et al, 2017).…”

Facile Modification of LiAlCl4 Electrolytes for Mg–Li Hybrid Batteries by the Conditioning-Free Method

“…9,14 The SEM, EDS, and XRD analyses in Figure S5 confirm that the deposit resulting from our CV test consists of pure metallic Mg without any traces of codeposited Al or Li. 26,40 Moreover, as suggested in Figure S6, the cf-LACC electrolyte does not change the composition of the Mg anode and does not form Mg dendrites. The electrochemical compatibility of cf-LACC with the Mg anode strongly indicates that Mg 2+ complexes generated by the conditioning-free process can act as charge carriers within Mg cells.…”