Carboranyl magnesium electrolyte for magnesium battery
AssigneeToyota Motor Engineering & Manufacturing North America, Inc.
InventorsRana Mohtadi, Oscar Tutusaus, Timothy S. Arthur, Tyler J. Carter
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Abstract
An electrochemical device is provided having a carboranyl magnesium electrolyte. Specifically the disclosure relates to an electrochemical device having a magnesium anode, a cathode, and a current collector made of non-noble metal, and a carboranyl magnesium electrolyte. In contact with the electrolyte, the non-noble metal cathode current collector has unusually high oxidative stability >3.0V vs. a magnesium reference. Processes for making the electrochemical device are additionally provided.
Claims16
An electrochemical device, comprising:
- an anode comprising magnesium;
- a cathode;
- and a carboranyl magnesium electrolyte comprising a composition having a formula of:
- formula (I):
- Mg(CiBjHj+1)X,
- formula (II):
- Mg(CiBjHj+1)Y,
- formula (III):
- Mg(CiBjHj+1)2,
- formula (IV):
- Mg2(C2BjHj) X2, or
- a combination of at least two of the foregoing, wherein i is 1 or 2;
- j is an integer between 8 and 11 inclusive;
- X is a halide;
- and wherein Y is a non-halide monoanion (i.e. an anion having a −1 charge).
A process for preparing an electrochemical device, comprising:
- connecting an anode composed of magnesium or a magnesium alloy and a cathode via an external electrically conductive structure;
- and
- contacting the anode and cathode with a carboranyl magnesium electrolyte comprising a composition comprising a composition having a formula of:
- formula (I):
- Mg(CiBjHj+1)X,
- formula (II):
- Mg(CiBjHj+1)Y,
- formula (III):
- Mg(CiBjHj+1)2,
- formula (IV):
- Mg2(C2BjHj) X2, or
- a combination of at least two of the foregoing, wherein i is 1 or 2;
- j is an integer between 8 and 11 inclusive;
- X is a halide;
- and wherein Y is a non-halide monoanion (i.e. an anion having a −1 charge).
Dependencies are inferred from the claim text.