Vacuum heat treatment equipment for continuously preparing SiO negative electrode material of lithium ion battery

Abstract

The invention discloses vacuum heat treatment equipment for continuously preparing a SiO negative electrode material of a lithium ion battery. The vacuum heat treatment equipment comprises a reactionsection, a condensation section and a receiving section, the reaction section comprises a vacuum cavity and a heat treatment assembly, a reaction heating thermal field is installed in the vacuum cavity, a reaction kettle is arranged in the reaction heating thermal field, the condensation section comprises a condensation cylinder, the outer ring of the condensation cylinder is wrapped with a condensation heating furnace, the material receiving section comprises a material receiving barrel body, the material receiving barrel body is communicated with the bottom of the condensation barrel body, the material receiving barrel body is connected with an air inlet of an air pumping system through a pipeline, the air inlet of the air pumping system is connected with the vacuum cavity through a vacuum connecting pipe, the brand-new device is additionally arranged on the condensation section, the temperature of the condensation section can be controlled, so that the needed SiO material can be stably prepared, the reaction section, the condensation section and the material receiving section are separated, mass production of products can be achieved, and installation and transportation are convenient.

Description

technical field [0001] The invention relates to the technical field of electrical cabinets, in particular to vacuum heat treatment equipment for continuously preparing SiO negative electrode materials for lithium-ion batteries. Background technique [0002] As the market's requirements for the energy density of lithium-ion batteries increase, the anode materials used in lithium-ion batteries are required to have high specific capacity and cycle performance. At present, the commonly used anodes for lithium-ion batteries are mainly graphite materials, and their theoretical capacity is only 372mAh / g. It is far from meeting the demand for negative electrodes of lithium-ion batteries with high specific energy density of 300WH / g. Silicon materials (nano-silicon, silicon-oxygen compounds) are abundant in reserves and have a wide range of sources. They are an ideal negative electrode material for lithium batteries. The SiO preparation equipment is not stable enough in the preparatio...

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Problems solved by technology

[0002] As the market's requirements for the energy density of lithium-ion batteries increase, the anode materials used in lithium-ion batteries are required to have high specific capacity and cycle performance. At present, the commonly used anodes for lithium-ion batteries are mainly graphite materials, and their theoretical capacity is only 372mAh / g. It is far from meeting the demand for negative electrodes of lithium-ion batteries with high specific energy density of 300WH / g. Silicon materials (nano-silicon, silicon-oxygen compounds) are abundant in reserves and have a wide range of sources. They are an ideal negative electrode material for lithium batteries. The SiO preparation equipment is not stable enough in the preparation process, and it is difficult to prepare SiO materials stably, which is not conducive to large-scale industrial production, and the overall structure is large, which is inconvenient for transportation and installation

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