| abstract |
An embodiment of the present invention relates to a secondary battery, a battery pack, and a vehicle. A secondary battery having excellent lifetime performance, a battery pack having the secondary battery, and a vehicle having the battery pack. According to one embodiment, a secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The electrolyte includes a solvent containing water and an organic sulfur compound including nitrogen atoms. The concentration of the organic sulfur compound in the electrolyte is in the range of 0.001 mM to 20 mM. |