Secondary battery, battery module, battery pack and power consuming device

A secondary battery, comprising

• a positive electrode plate and an electrolyte solution;
• wherein:
• the positive electrode plate comprises a positive current collector and a positive electrode film provided on at least one surface of the positive current collector, wherein the positive electrode film comprises a positive electrode active material and a lithium supplement, and the lithium supplement includes at least one of substances represented by formula (I) below,
• mLix1O·n(Niy1Mny2Coy3Cuy4Fey5)O (I)
• where:
• 1≤x1≤2;
• 0≤y1≤1;
• 0≤y2≤1;
• 0≤y3≤1;
• 0≤y4≤2;
• 0≤y5≤1;
• 0.5≤y1+y2+y3+y4+y5≤1;
• and
• 1≤m≤3;
• 0≤n/m≤1;
• the positive electrode film includes one or more nitrone derivatives as an additive, a molecule of each of the one or more nitrone derivatives comprising a structure represented by formula (II) below:

A secondary battery, comprising

• a positive electrode plate and an electrolyte solution;
• wherein:
• the positive electrode plate comprises a positive current collector and a positive electrode film provided on at least one surface of the positive current collector, wherein the positive electrode film comprises a positive electrode active material and a lithium supplement, and the lithium supplement includes at least one of substances represented by formula (I) below,
• mLix1O·n(Niy1Mny2Coy3Cuy4Fey5)O (I)
• where:
• 1≤x1≤2;
• 0≤y1≤1;
• 0≤y2≤1;
• 0≤y3≤1;
• 0≤y4≤2;
• 0≤5≤1;
• 0.5≤y1+y2+y3+y4+y5≤1;
• and
• 1≤m≤3;
• 0≤n/m≤1;
• the positive electrode film and/or the electrolyte solution includes one or more nitrone derivatives as an additive, a molecule of each of the one or more nitrone derivatives comprising a structure represented by formula (II) below:
• and
• the lithium supplement is coated with a coating layer, the coating layer including at least one of AlF3, Li3PO4, Li2MnO3, LiAlO2, Li2TiO3, Li2ZrO3, polyethylene glycol-modified poly-3,4-ethylenedioxythiophene (PEDOT), or conductive polymer polypyrrole (PPy).