Ionic-liquid-coated lithium ion battery positive plate as well as preparation method thereof and lithium ion battery

The invention discloses an ionic-liquid-coated lithium ion battery positive plate as well as a preparation method thereof and a lithium ion battery. The ionic-liquid-coated lithium ion battery positive plate comprises a positive active material, a conductive agent, a positive binder, an ionic liquid, a solvent and a positive current collector. Compared with the prior art, the prepared lithium ion battery positive electrode has the advantages of high specific energy and specific capacity, and good safety, so that the defects of low specific energy, an unstable material structure, poor cycle performance and low oxide positive electrode material safety of the existing lithium ion battery positive plate material are overcome, and therefore, a positive electrode material with high safety, high specific energy and low cost is provided for the lithium ion battery. The preparation method of the ionic-liquid-coated lithium ion battery positive plate is simple in process, low in production cost and suitable for large-scale industrial production.