Electrolyte for a magnesium sulfur battery
AssigneeToyota Motor Engineering & Manufacturing NA
InventorsJohn MULDOON, Hee Soo KIM, Masaki MATSUI
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Abstract
An electrochemical device, having an anode containing magnesium; a cathode stable to a voltage of at least 3.2 V relative to a magnesium reference; and an electrolyte obtained by admixture of a magnesium salt of a non-nucleophilic base comprising nitrogen and aluminum trichloride in an ether solvent is provided. As sulfur is stable to a voltage of at least 3.2 V relative to a magnesium reference, a magnesium-sulfur electrochemical device is specifically provided.
Claims20
An electrochemical device, comprising:
- an anode comprising magnesium;
- a cathode stable to a voltage of at least 3.2 V relative to a magnesium reference;
- and
- an electrolyte;
- wherein the electrolyte is obtained by admixture of a magnesium salt of a non-nucleophilic base comprising nitrogen and aluminum trichloride in an ether solvent.
An electrochemical device, comprising:
- an anode comprising magnesium;
- a cathode comprising sulfur;
- and
- an electrolyte comprising an ether solvent (A) and a salt of formula (II)
- [Mg2Cl3-6(A)]+[AlCl3(B)]− (II)
- wherein (B) is an anion of a non-nucleophilic base.
A method for preparing an electrochemical device, comprising:
- connecting an anode comprising magnesium and a cathode stable to a voltage of at least 3.2 V relative to a magnesium reference via an external electrically conductive structure;
- and
- contacting the anode and cathode with an electrolyte comprising:
- a magnesium salt of a non-nucleophilic base comprising nitrogen;
- aluminum trichloride;
- and
- an ether solvent.
Dependencies are inferred from the claim text.