Secondary battery
AssigneeMurata Manufacturing Co., Ltd.
InventorTakumi Hiasa
Life of this patent
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Abstract
A secondary battery includes a partition, a negative electrode, a positive electrode, a first aqueous electrolytic solution, and a second aqueous electrolytic solution. The partition separates a first space and a second space from each other and allows a metal ion to pass therethrough between the first space and the second space. The negative electrode is disposed in the first space. The positive electrode is disposed in the second space. The first aqueous electrolytic solution is contained in the first space. The second aqueous electrolytic solution is contained in the second space. The second aqueous electrolytic solution has a pH lower than the first aqueous electrolytic solution.
Claims13
A secondary battery comprising:
- a partition that separates a first space and a second space from each other and allows a metal ion to pass therethrough between the first space and the second space;
- a negative electrode that is disposed in the first space and that the metal ion is to be inserted into and extracted from;
- a positive electrode that is disposed in the second space and that the metal ion is to be inserted into and extracted from;
- a first aqueous electrolytic solution that is contained in the first space and includes the metal ion to be inserted into and extracted from each of the negative electrode and the positive electrode;
- and
- a second aqueous electrolytic solution that is contained in the second space and includes the metal ion to be inserted into and extracted from each of the negative electrode and the positive electrode, the second aqueous electrolytic solution has a pH lower than the first aqueous electrolytic solution,
- wherein the partition includes an ion exchange membrane,
- wherein the first aqueous electrolytic solution, the second aqueous electrolytic solution, or both further include a second metal ion that is different from the metal ion to be inserted into and extracted from each of the negative electrode and the positive electrode, and
- wherein the first aqueous electrolytic solution, the second aqueous electrolytic solution, or both include the second metal ion including one or both of an alkaline earth metal ion and a transition metal ion.
Dependencies are inferred from the claim text.