Foamed porous carbon-coated foil, high-performance lithium battery and preparation method of foamed porous carbon-coated foil

The invention belongs to the technical field of lithium battery manufacturing, and discloses a foamed porous carbon-coated foil, a high-performance lithium battery and a preparation method of the high-performance lithium battery, and the preparation method of the foamed porous carbon-coated foil comprises the following steps: S1, preparing standby conductive slurry; s2, preparing foaming conductive slurry; and S3, preparing the foamed porous carbon-coated foil. The foaming porous carbon-coated foil is prepared on the basis of ensuring the mechanical strength of the carbon-coated foil by adopting a two-stage pore forming agent, controlling a foaming process and synchronously improving a polymer composite adhesive; the foamed porous carbon-coated foil is used as a positive electrode current collector or a negative electrode current collector, then a composite pole piece is prepared, and a micro three-dimensional network porous structure which is uniformly distributed is constructed in a coating, so that an acti