Effect of Electrolytes on Electrochemical Properties of Magnesium Electrodes

Abstract

Magnesium (Mg) deposition and dissolution behaviors of 0.2 M MgBu 2 -(AlCl 2 Et) 2 , 0.5 M Mg(ClO 4) 2 , and 0.4 M (PhMgCl) 2 -AlCl 3 -based electrolytes with and without tris(pentafluorophe-nyl) borane (TPFPB) are investigated by ex situ scanning electron microscopy (SEM) and gal-vanostatic cycling of Mg/copper (Cu) cells. To ascertain the factors responsible for the anodic stability of the electrolytes, linear sweep voltammogrametry (LSV) experiments for various elec-trolytes and solvents are conducted. The effects of TPFPB as an additive on the anodic stability of 0.4 M (PhMgCl) 2 -AlCl 3 /THF electrolyte are also discussed.