Electrolyte and secondary battery
A technology of electrolyte solution and electrolyte salt, which is applied in the field of batteries, can solve problems such as the deterioration of the electrochemical performance of lithium-ion secondary batteries, and achieve the effect of improving the cycle performance at room temperature
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[0009] The electrolyte and the secondary battery according to the present invention will be described in detail below.
[0010] First, the electrolyte according to the first aspect of the present invention will be explained.
[0011] The electrolytic solution according to the first aspect of the present invention includes an electrolyte salt, an organic solvent, and additives. The additives include cyclotriphosphazene compounds and vinyl ethylene carbonate (VEC).
[0012] In the electrolyte according to the first aspect of the present invention, the cyclotriphosphazene compound refers to a six-membered cyclic compound formed by alternately forming P and N through single and double bonds, and a substituted derivative thereof.
[0013] In the electrolyte according to the first aspect of the present invention, the vinyl ethylene carbonate can form a mesh passivation film on the surface of the positive electrode active material, effectively inhibiting the oxidation of the positive electro...
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