Technology for processing anode material of cell

A battery positive electrode and processing technology, applied in the direction of phosphorus compounds, inorganic chemistry, non-metallic elements, etc., can solve the problems of unindustrialized production, and achieve the effects of easy scale-up production, good cycle stability, and high safety performance

Inactive Publication Date: 2012-07-11
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at this stage still stay in the LiFePO 4 In the preliminary exploration of cathode materials, industrial production has not been carried out

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Processing step of the present invention is:

[0019] 1. Ingredients and mixing

[0020] Take by weighing 200kg of raw materials ferrous oxalate, lithium carbonate and ammonium dihydrogen phosphate according to the ratio of 1:1:1, 20kg of glucose, and mix the raw materials evenly in the mixer;

[0021] 2. Dry

[0022] 3. burn

[0023] Add the dried precursor to a programmable temperature-controlled rotary kiln, protect it with nitrogen, keep it at 300-350°C for 10-15 hours, and keep it at 700-750°C for 10-15 hours;

[0024] 4. Ball milling, sieving, homogenization and packaging

[0025] Unload the clinker from the rotary kiln into a clean stainless steel feeder, cover the upper cover of the feeder and weigh it to prevent debris and dust from falling in; each time take 20-25kg of clinker and 45-50kg of steel balls After ball milling in a ball mill for 2 hours, pass through a 200-mesh vibrating sieve; after the sieved finished product is homogenized, it is packed in a...

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PUM

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Abstract

The invention which belongs to the technical field of the chemical industry concretely relates to a technology for processing an anode material of a cell. The technology for processing the anode material of the cell has the advantages of simple operation and convenience for the enlarged production. The invention adopts the following technical scheme: a template-high temperature solid phase technique is utilized to process the anode material of the cell in the invention, and the technology of the invention comprises steps of burdening, material mixing, drying, burning, ball milling, sieving, homogenizing and packaging.

Description

Technical field: [0001] The invention belongs to the technical field of chemical industry, and more specifically relates to the processing technology of battery cathode materials. Background technique: [0002] As the capacity and cycle performance of lithium-ion batteries continue to improve, lithium-ion batteries with larger capacity, lighter weight, smaller volume, thinner thickness, and lower cost are continuously introduced to the market. Studies have shown that cathode materials are the key to improving the performance of lithium-ion batteries, so the development of cathode materials with large capacity, low price, no environmental pollution, and safe use has always been a hot spot of concern. [0003] Olivine LiFePO 4 The material has the advantages of high specific capacity, cheapness, non-toxicity, good environmental compatibility, and stable performance, and is considered to be a positive electrode material for power lithium-ion batteries with great application po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/45
Inventor 舒品
Owner 舒品
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