High-safety all-solid-state lithium ion battery and production method thereof

Abstract

The invention discloses a high-safety all-solid-state lithium ion battery which comprises solid electrolyte, a positive plate and a negative plate, wherein the positive plate and the negative plate are overlapped with each other; the solid electrolyte is arranged between the positive plate and the negative plate adjacent to each other; the solid electrolyte is formed by mixing Li1+aAaSibO4 (A is one of Al, Mn, Ni and Ti, a is more than 1 and less than 2, and b is less than or equal to 2), an adhesive and a solvent according to a ratio of t:h:(1-t-h), wherein t is 30-55 percent, and h is 5-17 percent. The original combustible electrolyte and diaphragm are replaced by the noncombustible solid electrolyte, so that the risk that the battery is on fire is effectively reduced. When the solid electrolyte is in a slurry state, the battery is assembled, good contact between the solid electrolyte and a pole piece can be guaranteed, and ion diffusion impedance is reduced. The invention also discloses a method for producing the high-safety all-solid-state lithium ion battery.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a high-safety all-solid-state lithium-ion battery, a high-safety all-solid-state lithium-ion battery and a production method thereof. Background technique [0002] A lithium-ion battery is a rechargeable battery that primarily relies on the movement of lithium ions between the positive and negative electrodes to function. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes: when charging the battery, Li+ is deintercalated from the positive electrode, inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true when discharging. A battery that generally uses a material containing lithium as an electrode is a representative of a modern high-performance battery. [0003] Most of the existing lithium battery bases use organic s...

AI Technical Summary

Problems solved by technology

[0004] However, due to the unreasonable structural design and processing technology of the all-solid-state lithium-ion battery in the prior art, its service life is affected and there are still potential safety hazards, and the production is difficult, resulting in increased manufacturing costs.

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