Preparation device of lithium manganate battery positive electrode material

Abstract

The invention relates to preparation equipment of lithium manganate, in particular to a preparation device of a lithium manganate battery positive electrode material. The preparation device comprisesa calcination chamber, wherein the calcination chamber is separated into a left space and a right space by a heat conduction plate; one space is a heat supply chamber; the other space is an accommodating chamber for containing lithium manganate gel; the upper side of the accommodating chamber is provided with a container capable of containing liquid; the heat supply chamber transfers heat to the accommodating chamber so that the lithium manganate gel is dried and calcined; the container is heated through afterheat after the drying and the calcination in the calcination chamber. The gel containing, drying and calcination can be realized through one calcination chamber; the design is ingenious; the structure is simple; the cost can be reduced; meanwhile, the container arranged at the upper side of the accommodating chamber is heated by using the afterheat; the whole process flow process from gel preparation to calcination is realized; the energy sources can be saved; the work efficiencyis greatly improved.

Description

technical field [0001] The invention relates to a preparation device for lithium manganate, in particular to a preparation device for a cathode material of a lithium manganate battery. Background technique [0002] Lithium manganese oxide has become the first choice for power lithium-ion battery cathode materials due to its advantages of rich manganese resources, low cost, good safety, no environmental pollution, and easy preparation. However, the main reason hindering the formation of power battery-type lithium manganate industrialization capacity is Its performance is not stable enough, that is, its capacity decays quickly during the charge-discharge cycle, especially at high temperatures. At present, the main methods of lithium manganate can be divided into solid-phase method and liquid-phase method. Liquid-phase methods such as sol-gel methods are widely used in the preparation of nano-ceramic powders, films and fiber coatings. Because this method can realize uniform m...

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Problems solved by technology

The principle of the existing sol-gel method is that a variety of metal cations can form chelates with organic acids, and the chelates can be polymerized with polyhydroxy acids to form a solid polymer precursor with uniform distribution of cations. The final product can be obtained by heat treatment of the precursor; however, due to the limitation of the preparation equipment, the preparation time is long and the cost is high

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