Negative electrode composition, negative electrode slurry, negative electrode plate, and secondary battery and electrical device containing same

A negative electrode composition, comprising a negative active material and a plasticizer, wherein:

• the plasticizer comprises a first plasticizer and a second plasticizer;
• the first plasticizer comprises a polyester containing a —[O—CH(CH3)—C(═O)]— structural unit, wherein the polyester containing the —[O—CH(CH3)—C(═O)]— structural unit has a structural formula represented by Formula 2:
• in Formula 2, m represents an integer of 60 to 170,
• R3 and R4 each independently represent one of following groups substituted or unsubstituted by Rc:
• C1 to C8 alkyl, C1 to C8 alkoxyl, C2 to C8 alkenyl, or C2 to C8 alkynyl, and Rc represents at least one of halogen, amino, cyano, amido, hydroxyl, mercapto, C1 to C8 alkyl, or C1 to C8 alkoxyl, and
• M and M′ each independently represent alkali metal or alkaline earth metal;
• the second plasticizer comprises an organic solvent with a boiling point Tm of 160° C. to 250° C.;
• and
• a weight-average molecular weight of the polyester containing the —[O—CH(CH3)—C(═O)]— structural unit is 5000 to 15000.