Lithium ionic cell gel type ion liquid / polymer electrolyte and preparation thereof
A lithium-ion battery, ionic liquid technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of short cycle time of imidazole-based ionic liquids and electrode materials, and achieve a wide electrochemical window, high conductivity, Easy to operate effect
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specific Embodiment approach 1
[0010] Specific embodiment one: In this embodiment, the gel-type ionic liquid / polymer electrolyte of the lithium-ion battery is made of a high molecular polymer, an imidazole ionic liquid and a lithium salt, wherein the mass ratio of the high molecular polymer to the imidazole ionic liquid is 1:1-2, the mass ratio of imidazole ionic liquid to lithium salt is 0.01-6:1.
[0011] The ion conductivity of the electrolyte of the present invention is high, up to 2.99×10 -3 S cm -1 , good thermal stability and wide electrochemical window, it can be used in lithium-ion batteries with high capacity, and can also eliminate the safety hazards of liquid lithium-ion batteries to a large extent. flexible purpose. The electrolyte of the present invention has good compatibility with the lithium titanate negative electrode, and the lithium-ion battery manufactured with it has good safety and stable cycle performance under different magnifications. After repeated cycle tests, the specific capa...
specific Embodiment approach 2
[0012] Embodiment 2: This embodiment differs from Embodiment 1 in that the mass ratio of the polymer to the imidazole-based ionic liquid is 1:1.2-1.8. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0013] Embodiment 3: This embodiment differs from Embodiment 1 in that the mass ratio of the polymer to the imidazole-based ionic liquid is 1:1.5. Others are the same as in the first embodiment.
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