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US 9,431,678 B2Granted
Functionalized carboranyl magnesium electrolyte for magnesium battery
AssigneeToyota Motor Engineering & Manufacturing North America, Inc.
InventorsOscar Tutusaus, Rana Mohtadi
Life of this patent
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Abstract
Electrochemical devices and processes for forming them employ a functionalized carboranyl magnesium electrolyte. The functionalized carboranyl electrolyte includes a carboranyl anion functionalized with at least one halide, or one alkyl, aryl, alkoxy, and/or aryloxy groups, or their partially or completely fluorinated analogs. In contact with the electrolyte, a non-noble metal cathodic current collector has unusually high oxidative stability >3.0V vs. a magnesium reference.
Claims11
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.
8 more elements
A process for preparing an electrochemical device, comprising:
- contacting an anode and a cathode with an 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.
5 more elements
Dependencies are inferred from the claim text.