FIELD: electricity.
SUBSTANCE: active material of the negative electrode contains an alloy phase containing Cu and Sn which undergoes thermoelastic diffusionless transformation upon release or absorption of metal ions. Thermoelastic diffusionless transformation refers to the so-called thermoelastic martensitic transformation, but the expansion and compression coefficient of a unit cell cannot exceed more than 5%.
EFFECT: active material provides an increase in the capacity of the battery and improves the charge-discharge cycling characteristics of the secondary battery with non-aqueous electrolyte.
10 cl, 12 tbl, 10 dwg
