Lithium ion battery low-temperature electrolyte and lithium ion battery
A lithium-ion battery and electrolyte technology, applied in the field of lithium-ion battery low-temperature electrolyte and lithium-ion battery, can solve the problems of reducing interface impedance, affecting battery performance, shortening Li+ transmission path, etc., achieving high and low temperature conductivity and improving cycle performance effect
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[0017] The technical scheme of the present invention is described in further detail below:
[0018] The present invention may be embodied in many different forms and should not be considered limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0019] The invention provides a low-temperature electrolyte for lithium ion batteries, comprising 2%-20% lithium salt, 0.01%-20% low-temperature additive, 0.1%-10% film-forming additive, and 70%-90% non-aqueous organic solvent;
[0020] The general structural formula of the low temperature additive is:
[0021]
[0022] Wherein, R in the formula is straight-chain alkylene-C n -, where n is an integer greater than or equal to 1 and less than or equal to 6.
[0023] The straight-chain alkylene-C n One or more hydrogen atoms on - are replaced by the following substituen...
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