A kind of preparation technology of modified lithium manganate

Abstract

The invention discloses a preparation process of modified lithium manganese oxide, which comprises a frame, a first support plate, a first fixed plate, a second support plate, a second fixed plate, a first cylinder, a third fixed plate, a cover, The third support plate, the fixed table, the first installation groove, the first motor, the first crushing shaft, the second installation groove, the second motor, the second crushing shaft, the crushing device, the fourth support plate, the fourth fixed plate, the first Two cylinders, fifth fixed plate, sixth fixed plate, sliding door, stirring device, stirring space, third installation slot, third motor, stirring shaft, fourth installation slot, air pump, first electromagnetic reversing valve, air bag, A plug, a small air pump and a second electromagnetic reversing valve, the top surface of the frame is fixedly equipped with a first support plate, and the top of one side of the first support plate is fixedly equipped with a second support plate. The preparation process of a modified lithium manganese oxide according to the invention improves work efficiency and saves labor force.

Description

technical field [0001] The invention relates to the field of preparation of lithium manganate, in particular to a preparation process of modified lithium manganate. Background technique [0002] Lithium manganese oxide is one of the more promising lithium ion cathode materials. Compared with traditional cathode materials such as lithium cobalt oxide, lithium manganate has the advantages of abundant resources, low cost, no pollution, good safety, and good rate performance. It is an ideal However, its poor cycle performance and electrochemical stability greatly limit its industrialization. Lithium manganate mainly includes spinel-type lithium manganate and layered structure lithium manganate, among which spinel Type lithium manganese oxide has a stable structure and is easy to realize industrial production. Today's market products all have this structure. Spinel type lithium manganate belongs to the cubic crystal system, Fd3m space group, and the theoretical specific capacity ...

AI Technical Summary

Problems solved by technology

[0002] Lithium manganese oxide is one of the more promising lithium ion cathode materials. Compared with traditional cathode materials such as lithium cobalt oxide, lithium manganate has the advantages of abundant resources, low cost, no pollution, good safety, and good rate performance. It is an ideal However, its poor cycle performance and electrochemical stability greatly limit its industrialization. Lithium manganate mainly includes spinel-type lithium manganate and layered structure lithium manganate, among which spinel Type lithium manganese oxide has a stable structure and is easy to realize industrial production. Today's market products all have this structure. Spinel type lithium manganate belongs to the cubic crystal system, Fd3m space group, and the theoretical specific capacity is 148mAh / g. Due to its three-dimensional tunnel structure , Lithium ions can be deintercalated reversibly from the spinel lattice without causing structure collapse, so it has excellent rate performance and stability; the production of lithium manganate is mainly based on EMD and lithium carbonate as raw materials, with the corresponding Additives are produced through steps such as mixing, firing, and post-processing. In order to fully react solid raw materials such as EMD and lithium carbonate, we have designed a preparation process for modified lithium manganate.

Images