High-ionic-conductivity lithium battery diaphragm with self-closing function and preparation method of high-ionic-conductivity lithium battery diaphragm
A technology of ionic conductivity and lithium battery diaphragm, which is applied in the direction of battery pack parts, circuits, electrical components, etc., can solve the problems of low ion conductivity, no self-shutdown function, and low thermal stability of lithium battery diaphragms, etc., to achieve High thermal sensitivity and thermal dimensional stability, high safety and performance, and wide application range
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[0054] Example 1
[0055] A method for preparing a high ion conductivity lithium battery diaphragm having a self-turning off function, and the specific steps are as follows:
[0056] (1) Preparation of raw materials;
[0057] Preparation of conductive inorganic solution containing viscous substances:
[0058] According to the mass volume ratio of 0.5 mg / ml, the conductive inorganic (MXENE) is dispersed in an aqueous solution, and then mixed with aqueous solution containing a viscous material (butadiene rubber binder) to obtain a viscous material. Conductive inorganic solution; in a conductive inorganic solution containing viscous substance, the concentration of the viscous material is 0.001% by weight.
[0059] Preparation of ceramic nanoparticle solution containing viscous substance:
[0060] According to the mass volume ratio of 0.5 mg / ml, ceramic nanoparticles (hydrophilic nano SiO) 2 The particles, the average particle diameter is 7 nm) is dispersed in an aqueous solution,...
Example Embodiment
[0081] Example 2
[0082] A method for preparing a high ion conductivity lithium battery diaphragm having a self-turning off function, and the specific steps are as follows:
[0083] (1) Preparation of raw materials;
[0084] Preparation of conductive inorganic solution containing viscous substances:
[0085] According to the mass volume ratio of 0.5 mg / ml, the conductive inorganic (MXENE) is dispersed in an aqueous solution, and then mixed with aqueous solution containing a viscous material (butadiene rubber binder) to obtain a viscous material. Conductive inorganic solution; in a conductive inorganic solution containing viscous substance, the concentration of the viscous material is 0.001% by weight.
[0086] Preparation of ceramic nanoparticle solution containing viscous substance:
[0087] According to the mass volume ratio of 0.5 mg / ml, ceramic nanoparticles (hydrophilic nano SiO) 2 The particles, the average particle diameter is 10 nm) is dispersed in aqueous solution, a...
Example Embodiment
[0095] Example 3
[0096] A method for preparing a high ion conductivity lithium battery diaphragm having a self-turning off function, and the specific steps are as follows:
[0097] (1) Preparation of raw materials;
[0098] Preparation of conductive inorganic solution containing viscous substances:
[0099] According to the mass volume ratio of 0.5 mg / ml, the conductive inorganic (MXENE) is dispersed in an aqueous solution, and then mixed with aqueous solution containing a viscous material (butadiene rubber binder) to obtain a viscous material. Conductive inorganic solution; in a conductive inorganic solution containing viscous substance, the concentration of the viscous material is 0.001% by weight.
[0100] Preparation of ceramic nanoparticle solution containing viscous substance:
[0101] According to the mass volume ratio of 0.5 mg / ml, ceramic nanoparticles (hydrophilic nano SiO) 2 The particles, the average particle diameter is 20 nm) is dispersed in an aqueous solution...
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