The development of organic electrolyte for rechargeable magnesium battery

The development of organic electrolyte of magnesium battery was reviewed. Mg deposition-dissolution involved adsorption-desorption process. The specific absorbed species affected the final morphology of Mg deposition, which strongly affected the cycling efficiency of Mg deposit. The grignard salts of Mg(AX_(4-n)R_n)_2 type (A=Al, B, As, P, Sb, Ta and Fe; X= Cl, Br and F, and R=alkyl or aryl) could be expected to be products of a reaction between an R_2Mg Lewis base which played a key role of the decomposition potential of electrolyte and an AX_(3-n)R~′_n Lewis acid. The content of R groups was crucial for obtaining reversible magnesium deposition. The best performance was obtained with the solutions containing the THF/Bu_2Mg-(AlCl_2Et)_2.