Integrally-designed positive and negative pole pieces, semi-solid-state battery and preparation method of semi-solid-state battery

The invention discloses integrally designed positive and negative pole pieces, a semi-solid battery and a preparation method thereof, and relates to the technical field of lithium ion batteries, and the preparation method comprises the following steps: preparing the positive pole piece; preparing a negative pole piece; preparing a semi-solid battery; the method comprises the following steps: integrally designing a positive pole piece, a negative pole piece and a diaphragm lamination, packaging by using an aluminum plastic film, mixing 65-70 parts by mass of isocyanate monomer, 12-15 parts by mass of electrolyte, 7-13 parts by mass of initiator and 5-13 parts by mass of solvent to obtain a monomer pre-polymerized solution, injecting the monomer pre-polymerized solution into a battery cell, standing and infiltrating at normal temperature for 22-26 hours to obtain the lithium ion battery. The battery cell is pressurized and heated, so that the monomer prepolymerization liquid is subjected to in-situ polymerizati