Preparation method of lithium battery and lithium battery prepared by same

The invention provides a preparation method of a lithium battery and the lithium battery prepared from the lithium battery, and the preparation method of the lithium battery comprises the following steps: mixing a carbon fluoride active material and a conductive agent to obtain a dry powder mixture; mixing a binder and a dispersing agent to obtain a binder glue solution; then adding a part of the binder glue solution into the dry powder mixture, and carrying out kneading treatment to obtain a bonding slurry; adding the solvent and the residual binder glue solution into the bonding slurry at one time or in batches for multiple times, and dispersing to obtain positive electrode slurry; and finally, coating a current collector with the positive electrode slurry so as to form an active material layer on the current collector, and sequentially carrying out drying, rolling, slitting and die cutting treatment to obtain the positive electrode plate. In the prepared lithium battery, the positive pole piece has relativ