Method for preparing polymer solid-state lithium battery sheet through roll-to-roll thermal lamination
A roll-to-roll, thermal bonding technology, applied in battery electrodes, secondary batteries, non-aqueous electrolyte batteries, etc., can solve the problem of poor thermal stability, affecting battery working stability, and polymer electrolyte membrane thermal stability has not been improved. and other problems, to achieve the effect of improving thermal stability, maintaining amorphous properties, and good amorphous properties
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Embodiment 1
[0030] (1) Mix polyethylene oxide, polyvinyl carbonate, lithium salt, aluminum isopropoxide, nano-inorganic substances, fast ion conductors, and plasticizers evenly, and then send them into the screw extruder, and the screw extruders The temperature of the extruder is strictly controlled at 85°C. The screw extruder is equipped with a sheet film die to extrude into a film to obtain an electrolyte film sheet with an average thickness of 300 μm; the lithium salt is lithium hexafluorophosphate (LiPF 6 ); the nano-inorganic substance is nano-silica; the fast ion conductor is a pomegranate-type lanthanum-zirconium oxide electrolyte; the plasticizer is ethylene carbonate; stretching is carried out when extruding into a film, and the longitudinal pulling ratio is 1.8 times;
[0031] The ratio of each raw material is that the mixing mass ratio of aluminum isopropoxide, polyethylene oxide, polyvinyl carbonate, lithium salt, nano-inorganic matter, fast ion conductor, and plasticizer is 10...
Embodiment 2
[0034] (1) Mix polyethylene oxide, polyvinyl carbonate, lithium salt, aluminum isopropoxide, nano-inorganic substances, fast ion conductors, and plasticizers evenly, and then send them into the screw extruder, and the screw extruders The temperature of the extruder is strictly controlled at 88°C. The screw extruder is equipped with a film die to extrude into a film to obtain an electrolyte film with an average thickness of 400 μm; the lithium salt is lithium bisoxalate borate (LiBOB); nano-inorganic The material is nano-alumina; the fast ion conductor is pomegranate-type lanthanum-zirconium oxide electrolyte; the plasticizer is dimethyl carbonate; it is stretched when extruded into a film, and the longitudinal pull-up ratio is 1.9 times;
[0035] The ratio of each raw material is that the mixing mass ratio of aluminum isopropoxide, polyethylene oxide, polyvinyl carbonate, lithium salt, nano-inorganic matter, fast ion conductor, and plasticizer is 100:9:9:7:0.8 :0.09:40;
[00...
Embodiment 3
[0038] (1) Mix polyethylene oxide, polyvinyl carbonate, lithium salt, aluminum isopropoxide, nano-inorganic substances, fast ion conductors, and plasticizers evenly, and then send them into the screw extruder, and the screw extruders The temperature of the extruder is strictly controlled at 82°C. The screw extruder is equipped with a sheet film die to extrude into a film to obtain an electrolyte film sheet with an average thickness of 100 μm; the lithium salt is lithium perchlorate (LiClO 4 ); the nano-inorganic substance is nano-zinc oxide; the fast ion conductor is Li 2 S-P 2 S 5 Sulfide electrolyte; the plasticizer is propylene carbonate; it is stretched when extruded into a film, and the longitudinal stretching ratio is 16 times;
[0039] The ratio of each raw material is that the mixing mass ratio of aluminum isopropoxide, polyethylene oxide, polyvinyl carbonate, lithium salt, nano-inorganic matter, fast ion conductor, and plasticizer is 100:6:6:4:0.6 :0.07:30;
[004...
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