Lithium-ion battery and its non-aqueous electrolyte
A non-aqueous electrolyte and lithium-ion battery technology, which is applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems of lithium-ion battery cycle capacity retention rate decline, irreversible capacity loss, and high positive oxidation activity. High-temperature storage performance and intermittent cycle capacity retention, reduced electrochemical activity, and the effect of inhibiting oxidative decomposition
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Embodiment 1
[0047] Lithium-ion batteries were prepared according to the method of Comparative Example 1, the difference was only that: the non-aqueous electrolyte also contained additives, and the additive was LiBF with a mass percentage of 0.1% in the non-aqueous electrolyte 4 And the dinitrile compound with the structure of formula I in the mass percentage content of 1% in the non-aqueous electrolyte.
Embodiment 2
[0049] Lithium-ion batteries were prepared according to the method of Comparative Example 1, the difference was only that: the non-aqueous electrolyte also contained additives, and the additive was LiBF with a mass percentage of 0.2% in the non-aqueous electrolyte 4 And the dinitrile compound with the structure of formula I in the mass percentage content of 1% in the non-aqueous electrolyte.
Embodiment 3
[0051] Lithium-ion battery was prepared according to the method of comparative example 1, the difference was only: the non-aqueous electrolyte also contained additives, and the additive was LiBF with a mass percentage of 0.3% in the non-aqueous electrolyte 4 And the dinitrile compound with the structure of formula I in the mass percentage content of 1% in the non-aqueous electrolyte.
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