Device and method for mixing silicon monoxide composite negative electrode materials

Abstract

The invention discloses a device for mixing silicon monoxide composite negative electrode materials. The device comprises a mixing barrel and a plurality of legs. The legs are fixedly mounted at the lower end of the mixing barrel, a cover is detachably mounted at the upper end of the mixing barrel, feed hoppers are fixedly mounted on the side walls of the mixing barrel, a liquid outlet pipe and astirring motor are fixedly mounted on the lower surface of the mixing barrel, and a control valve is mounted on the liquid outlet pipe. The device and a method for mixing the silicon monoxide composite negative electrode materials have the advantages that mixed raw materials can be ground by the aid of the device and the method in procedures for mixing the mixed raw materials for the silicon monoxide composite negative electrode materials, and the device has abundant functions; the frequencies for individually grinding the mixed raw materials in follow-up procedures can be reduced, accordingly, the integral silicon monoxide composite negative electrode material production cycle can be shortened, the production cost can be reduced, and the device and the method are good in practicality.

Description

technical field [0001] The invention relates to the production field of silicon monoxide composite negative electrode materials, in particular to a silicon monoxide composite negative electrode material mixing device and a mixing method thereof. Background technique [0002] At present, the anode materials of lithium-ion batteries are mainly carbon-based materials, but due to their low specific capacity, they are gradually replaced by silicon materials. However, due to the huge volume change of pure silicon materials during battery charging and discharging, this huge The volume change of the battery will cause the pole piece of the battery to pulverize and fall off, resulting in the separation of the electrode active material and the current collector, which seriously affects the cycle performance of the battery. Therefore, people are working on the development of new battery anode materials that can replace pure silicon materials; Among them, the silicon monoxide material h...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a silicon monoxide composite negative electrode material mixing device and its mixing method in order to solve the above problems, to solve the problem that the traditional silicon monoxide composite negative electrode material mixing device in the prior art can only compound silicon monoxide The raw materials of the negative electrode material are mixed, and the raw materials cannot be ground while mixing, resulting in the need for multiple grindings in the subsequent production process to obtain the raw material of the silicon monoxide composite negative electrode material with a compliant particle size, thus making the entire production of the silicon monoxide composite negative electrode material The cycle is longer, the production cost is higher, etc.

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