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US 11,901,509 B2Granted
Electrolyte solution and electrochemical device
AssigneeMurata Manufacturing Co., Ltd.
InventorsRyuhei Matsumoto, Daisuke Mori, Yuri Nakayama
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Abstract
An electrochemical device including a negative electrode made of a magnesium-based material includes an electrolyte solution consisting of a solvent composed of linear ether, and magnesium salt dissolved in the solvent, in which the magnesium salt is dissolved in 3 moles or more per liter of the solvent.
Claims3
An electrochemical device comprising a negative electrode including a magnesium-based material, and a positive electrode including S8 or polymeric sulfur,
- wherein the electrochemical device includes an electrolyte solution consisting of a solvent composed of linear ether, and magnesium salt dissolved in the solvent,
- wherein a total concentration of the magnesium salt in the electrolyte solution is in a high concentration state such that the magnesium salt is dissolved in 3 moles or more per liter of the solvent, thereby the solvent in the electrolyte solution is in a state of being substantially coordinated to the magnesium salt and not substantially coordinated to the S8 or polymeric sulfur, and
- wherein solubility of S8 or polymeric sulfur is 0.5 milligram or less per milliliter of the electrolyte solution.
Dependencies are inferred from the claim text.