FUNCTIONALIZED CARBORANYL MAGNESIUM ELECTROLYTE FOR MAGNESIUM BATTERY

摘要

An electrochemical device is provided having a functionalized carboranyl magnesium electrolyte. Specifically the disclosure relates to an electrochemical device having a magnesium anode, a cathode, a current collector made of non-noble metal, and a functionalized carboranyl magnesium electrolyte. The functionalized carboranyl electrolyte includes a carboranyl anion functionalized with at least one halide, or one alkyl, aryl, alkoxy, aryloxy groups, or their partially or completely fluorinated analogues. In contact with the electrolyte, the non-noble metal cathodic current collector has unusually high oxidative stability >3.0V vs. a magnesium reference. Processes for making the electrochemical device are additionally provided.

主权项

1. An electrochemical device, comprising:
an anode comprising magnesium; a cathode; and an electrolyte in contact with the anode and the cathode, the electrolyte comprising a functionalized carboranyl magnesium salt having a formula of:
Mg(CBiH[(i+1)-j-k]XjRk)2,   Formula I:Mg(C2B(i−1)H(i-j-k)XjRk)2, or   Formula II:a combination of at least two of the foregoing, wherein i is an integer within a range of 5 through 11, inclusive; j is an integer within a range of 0 through i inclusive; k is an integer between 0 and i inclusive; each X, independently of each other X, is fluorine, chlorine, bromine, or iodine; and each R, independently of each other R, is an alkyl, aryl, alkoxy, aryloxy, their partially or completely fluorinated analogues, or a moiety combining the aforementioned functionalities.