Production process of lithium ion battery negative electrode material,
A technology for lithium-ion batteries and negative electrode materials, applied in battery electrodes, secondary batteries, electrochemical generators, etc., can solve problems such as low production efficiency, difficulty in mass production, and low degree of automation, so as to save production costs, The effect of improving productivity
Inactive Publication Date: 2020-03-27
PUHLER GUANGDONG SMART NANO TECH CO LTD
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Problems solved by technology
However, the existing lithium titanate process is not highly automated, the production efficiency is low, and it is difficult to mass-produce in batches
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[0023] Combine below figure 1 The present invention is described in detail, and the schematic illustrations and descriptions of the present invention are used to explain the present invention, but not as a limitation to the present invention.
[0024] A kind of production technology of lithium ion battery negative pole material, it comprises the following steps:
[0025] First, the raw materials titanium hydroxide or titanium dioxide, lithium carbonate or hydrated lithium hydroxide, and pure water are transported to the reaction kettle in proportion to be mixed and dispersed, and other preferred compositions can also be used; in the present invention, titanium hydroxide or titanium dioxide and Lithium carbonate or hydrated lithium hydroxide raw materials are poured into the feeding hopper of the feeding station after unpacking, and then enter the feeding tank from the feeding hopper, and the raw materials are transported to the reaction kettle through compressed gas or negativ...
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The invention relates to production of battery materials, in particular to a production process of a lithium ion battery negative electrode material. The production process comprises the following steps: proportionally conveying raw materials into a reaction kettle for mixing and dispersing; drying the mixed and dispersed slurry; carrying out solid-phase sintering on the dried powder; conveying the sintered powder to a high-speed dispersion tank for dispersion; removing iron in the dispersed powder and conveying the dispersed powder to a grinding system for cyclic grinding; and finally, dryingand sintering the ground slurry again, and packaging the sintering product. The production of the lithium titanate electrode material is completed through the processes of reaction, drying, sintering, dispersion, grinding, secondary drying and sintering and the like. Batch production of the electrode material is realized, the purpose of automatic production is achieved, the production efficiencyis greatly improved, and the production cost is saved.
Description
technical field [0001] The invention relates to a production process of a battery material, in particular to a production process of a negative electrode material of a lithium ion battery. Background technique [0002] Lithium-ion batteries, which have been widely used in portable devices, satellites, power reserves, and electric vehicles, have large specific energy, high specific power, small self-discharge, good cycle characteristics, fast charging, high efficiency, and wide operating temperature range. , No environmental pollution and other advantages. Lithium-ion batteries used in the market basically use carbon materials as negative electrodes, but there are still some insurmountable weaknesses in practical application of carbon materials as negative electrodes. The consumption of the electrolyte and the first coulombic efficiency are low; the potential of the carbon electrode is very close to that of metal lithium. When the battery is overcharged, metal lithium is eas...
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IPC IPC(8): C01G23/00H01M4/485H01M10/0525
CPCC01G23/005H01M4/485H01M10/0525Y02E60/10
Inventor 谢镭雷粤雷立猛尼佐利·密尔科
Owner PUHLER GUANGDONG SMART NANO TECH CO LTD