Solid-state composite electrolyte membrane preparation process and solid-state composite electrolyte membrane

A composite electrolyte membrane and preparation process technology, which is applied in the preparation process of solid composite electrolyte membrane and the field of solid composite electrolyte membrane, can solve the problems of difficult thickness, low mechanical properties of electrolyte membrane, and easy short circuit of positive and negative poles, so as to prevent contact Defective or unstable phenomenon, facilitate battery stacking or winding assembly, and reduce the effect of short circuit risk
CN112421105AInactive Publication Date: 2021-02-26ZHEJIANG NARADA POWER SOURCE CO LTD +1
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
ZHEJIANG NARADA POWER SOURCE CO LTD
Publication Date
2021-02-26
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a solid-state composite electrolyte membrane preparation process and a solid-state composite electrolyte membrane. The preparation process of the solid-state composite electrolyte membrane comprises the following steps: by taking a porous flexible membrane as a support matrix of the composite electrolyte membrane, respectively and sequentially attaching a low-viscosity electrolyte solution and a high-viscosity electrolyte solution on at least one side surface of the porous flexible membrane and in a pore structure of the porous flexible membrane step by step in a dip-coating mode, and conducting drying to obtain the solid-state composite electrolyte membrane. The viscosity of the high-viscosity electrolyte solution is higher than that of the low-viscosity electrolyte solution, and the thickness of the solid composite electrolyte membrane is 5 microns to 120 microns.
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Description

technical field

[0001] The invention relates to the technical field of lithium ions, in particular to a preparation process of a solid composite electrolyte membrane and the solid composite electrolyte membrane. Background technique

[0002] Commercial lithium-ion batteries currently mainly use organic liquid electrolytes. However, due to the characteristics of flammability, leakage, and volatility of organic solvents, potential risks such as battery overcharge and short circuit make liquid organic electrolyte lithium-ion batteries have certain safety hazards in use. The all-solid-state lithium battery is expected to solve the safety problems in liquid lithium batteries such as electrolyte leakage, combustion, and short circuit caused by lithium dendrites piercing the separator.

[0003] Solid electrolytes are divided into solid inorganic electrolytes and solid polymer electrolytes. Solid-state inorganic electrolytes have high ionic conductivity, but their poor processabil...

Claims

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