Secondary battery, battery pack, vehicle, and stationary power supply
AssigneeKabushiki Kalsha Toshiba
InventorsYumiko Sekiguchi, Yasuyuki Hotta, Shinsuke Matsuno
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Abstract
According to one embodiment, provided is a secondary battery including a negative electrode containing a titanium-containing oxide, a positive electrode, a separator between the negative electrode and the positive electrode, a first aqueous electrolyte, a second aqueous electrolyte, and a third aqueous electrolyte. The first aqueous electrolyte is held in the negative electrode and contains 0.001% by mass to 0.5% by mass of zinc ions. The second aqueous electrolyte is held in the separator and contains 1% by mass to 5% by mass of a first compound that includes a hydrophobic portion and a hydrophilic portion. The third aqueous electrolyte is held in the positive electrode.
Claims13
A secondary battery comprising:
- a negative electrode comprising a titanium-containing oxide;
- a positive electrode;
- a separator between the negative electrode and the positive electrode;
- a first aqueous electrolyte held in the negative electrode, the first aqueous electrolyte comprising 0.001% by mass to 0.5% by mass of zinc ions;
- a second aqueous electrolyte held in the separator, the second aqueous electrolyte comprising 1% by mass to 5% by mass of a first compound, the first compound including a hydrophobic portion and a hydrophilic portion;
- and
- a third aqueous electrolyte held in the positive electrode.
Dependencies are inferred from the claim text.