Silicon carbide sagger for lithium battery positive electrode material and preparation method thereof

Abstract

The invention belongs to the technical field of lithium battery positive electrode materials, and discloses a silicon carbide sagger for a lithium battery positive electrode material and a preparationmethod thereof. The preparation method comprises a sagger substrate and a working layer pressed on the inner surface of the sagger substrate. The sagger substrate is prepared from the following raw materials in parts by weight: 60-75 parts of silicon carbide powder, 15-25 parts of clay, 5-10 parts of nanometer zirconium oxide, 5-10 parts of aluminum oxide powder, 5-10 parts of a binding agent and10-20 parts of water. The working layer is prepared from the following raw materials in parts by weight: 30-40 parts of silicon carbide powder, 20-30 parts of aluminum oxide powder, 10-20 parts of organic silicon resin, 1-10 parts of talcum powder, 1-3 parts of graphene and 2-8 parts of water. The prepared silicon carbide sagger is high in corrosion resistance, the bonding performance of an anti-corrosion layer and a sagger body is good, service life is prolonged, and recycling of the sagger body can be achieved.

Description

technical field

[0001] The invention belongs to the technical field of lithium battery cathode materials, and relates to a silicon carbide sagger used for lithium battery cathode materials and a preparation method thereof. Background technique

[0002] Lithium-ion battery is a new generation of green battery, widely used in mobile communications, military, aerospace and information science fields. Lithium battery positive electrode material is an important part of the lithium ion battery. The raw materials are mixed by mechanical stirring, ball milling or pressing, and then calcined at high temperature by high temperature roasting, cooling and crushing. As a container for raw materials in the high-temperature roasting process, since the raw materials used in the positive electrode materials of lithium batteries will decompose during the synthesis process, lithium oxide with strong permeability and reactivity will corrode the sagger, and problems such as peeling and pulveriza...