Water-based formula and production process of photovoltaic lithium ion battery electrode

Abstract

The invention discloses a water-based formula and a preparation method of a photovoltaic lithium ion battery electrode, and relates to the technical field of a battery. The photovoltaic lithium ion battery electrode is prepared from the following components in parts by weight: 1 to 1.6 parts of thickener, 92 to 94 parts of active substance, 80 to 100 parts of deionized water, 1 to 4 parts of conductive agent, 2 to 5 parts of adhesive, and 1 to 3 parts of low-temperature-resistant agent. The preparation method comprises the steps of taking 40 to 60% of deionized water, adding 0.5 to 2% of edible quick-dissolving CMC, and stirring the deionized water and the CMC in a mixing stirring machine for 0.5 to 2 hours to prepare glue; feeding and soaking the active substance at twice; adding the prepared glue into the soaked active substance, and carrying out stirring for 1 to 2 hours; adding the thickener to mix; measuring the viscosity; filtering a sizing agent by a screen with a specification of 100 to 120 meshes; and uniformly coating the sizing agent on a metal foil, drying by a drying oven of a coating machine, and then after compacting by a pair roller, carrying out die-cutting to form various types of pole pieces. According to the water-based formula and a preparation method of the photovoltaic lithium ion battery electrode, which are disclosed by the invention, charging performance of the photovoltaic lithium ion battery electrode is still excellent at a relatively low temperature in winter, and a service life of the photovoltaic lithium ion battery electrode can be prolonged.

Description

[0001] Technical field: [0002] The invention relates to the field of battery technology, in particular to a water-based composition and production process of photovoltaic lithium-ion battery electrodes. [0003] Background technique: [0004] A device that converts chemical energy into electrical energy is called a chemical battery, generally referred to as a battery. After the battery is discharged, the internal active material can be regenerated by charging—the electrical energy is stored as chemical energy; when it needs to be discharged, the chemical energy is converted into electrical energy again. In winter, when the lithium battery operates at low temperature, the activity of various active materials decreases, and the charging current drops significantly. Charging under low temperature conditions, the lithium battery has poor acceptance and insufficient charging, so it is necessary to increase the charging voltage and prolong the charging time. In order to prolong t...

AI Technical Summary

Problems solved by technology

In order to prolong the service life of lithium batteries, there is no way to achieve it through technical improvement. Most of them use antifreeze and heat preservation measures when lithium batteries are used at low temperatures. Lithium batteries should be placed in a warm environment when charging, which is not only troublesome , and the effect is poor

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