A kind of production method of continuous casting and rolling metal strip

Abstract

The invention discloses a production method of continuous casting and rolling metal strips. Liquid metal is added to the feeding side of the control roll group, and the liquid metal is kept liquid and fluid by utilizing the high temperature zone arranged on the feeding side of the control roll group. The control roller group controls the forming thickness of the liquid metal, and the liquid metal on the transmission belt is cooled and shaped into a metal belt by using the cooling zone arranged on the discharge side of the control roller group. In the production method of the continuous casting and rolling metal strip of the present invention, the thickness of the liquid metal is controlled by the control roller group, and the liquid metal moves to the cooling zone on the discharge side of the control roller group under the joint action of the control roller group and the transmission belt, and is cooled The metal strip is obtained after cooling and shaping in the zone. Due to the high fluidity of the liquid metal, the thickness of the liquid metal can be controlled to be very thin. When the composite metal strip is used as an energy storage electrode, it can meet the application requirements.

Description

technical field [0001] The invention relates to a production method of a metal strip, in particular to a production method of a continuous casting and rolling metal strip. Background technique [0002] The negative electrode of the lithium-ion battery is formed by mixing the negative electrode active material carbon material or non-carbon material, binder and additives, and the paste is evenly applied on both sides of the copper foil, dried and rolled. Whether lithium-ion batteries can be successfully manufactured depends on whether anode materials that can reversibly extract / intercalate lithium ions can be prepared. Generally speaking, the selection of a good anode material should follow the following principles: high specific energy; low electrode potential relative to lithium electrodes; good reversibility of charge and discharge reactions; good compatibility with electrolyte and binder; small specific surface area (<10m 2 / g), high true density (>2.0g / cm 3 ); go...

AI Technical Summary

Problems solved by technology

When thick metal lithium strips are used in metal lithium batteries, the capacity of the negative electrode is far greater than that of the positive electrode, which causes waste of lithium metal in the negative electrode, increases the volume and weight of the battery, and reduces the volume and quality of the battery. Energy density is not conducive to the improvement of the limit energy density of metal lithium batteries

In addition, the Chinese patent with the publication number CN105489845A proposes a method based on PVD to prepare a thin-layer metal lithium-based negative electrode. This method can prepare metal lithium with a thinner thickness, but this method cannot be continuously produced in large quantities.

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