Battery

A battery, comprising a positive electrode plate, wherein the positive electrode plate comprises a positive electrode material, and the positive electrode material meets the following relationships:

• 1.3
• ≤
• I
• 0
• ⁢
• 0
• ⁢
• 3
• /
• I
• 1
• ⁢
• 0
• ⁢
• 4
• ≤
• 3
• ,
• 0
• .
• 0
• ⁢
• 2
• ≤
• I
• 0
• ⁢
• 0
• ⁢
• 6
• /
• I
• 0
• ⁢
• 0
• ⁢
• 3
• ≤
• 0.15
• ,
• and
• 0.06
• ≤
• I
• 0
• ⁢
• 0
• ⁢
• 6
• /
• I
• 1
• ⁢
• 0
• ⁢
• 4
• ≤
• 0
• .
• 1
• ⁢
• 5
• ,
• wherein I003 is intensity of a characteristic diffraction peak of a (003) crystal plane that is obtained from an XRD diffraction peak of a powder sample of the positive electrode material, I104 is intensity of a characteristic diffraction peak of a (104) crystal plane that is obtained from the XRD diffraction peak of the powder sample of the positive electrode material, and I006 is intensity of a characteristic diffraction peak of a (006) crystal plane that is obtained from the XRD diffraction peak of the powder sample of the positive electrode material;
• and
• the battery comprises an electrolyte solution, the electrolyte solution comprises a first additive, the first additive comprises a nitrile compound, and the electrolyte solution meets the following relational expression:
• 3
• ⁢
• %
• ≤
• B
• ≤
• 6
• ⁢
• %
• ,
• wherein B is a percentage of a mass of the nitrile compound in a total mass of the electrolyte solution.