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High-performance lithium battery lithium titanate negative electrode material and preparation method thereof

A negative electrode material, lithium titanate technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of low energy density, high price, battery consistency differences, etc., to achieve simple and easy process, good battery dynamic performance , the effect of improving the charging and discharging performance

Inactive Publication Date: 2014-01-22
HEFEI HENGNENG NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also certain shortcomings, such as lower energy density compared to other types of lithium-ion power batteries; higher price than other types of lithium-ion power batteries; differences in battery consistency, etc., which need further research and development

Method used

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Experimental program
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Embodiment Construction

[0009] The present invention will be described in detail below through specific examples.

[0010] A high-performance lithium titanate anode material for lithium batteries, made of the following parts by weight (kg) of raw materials: lithium titanate 400, graphite 3, nano copper powder 2, nano aluminum powder 1, sodium dodecyl benzene sulfonate 2. Modified silver powder 4. Appropriate amount of water;

[0011] The modified silver powder is made of the following parts by weight (kg) of raw materials: silver powder 100, nano carbon 2, tapioca starch 2, bauxite 2, diatomaceous earth 3, methyl triethoxy silane 1, silicon carbide 2 , Aluminum nitride 1, ZnO1, Nb 2 O 5 1-2; Mix the raw materials uniformly, heat to 50-55°C, grind for 1-2 hours, and disperse them into powder uniformly, and send them to the calciner for sintering at 510-530°C for 2-3 hours.

[0012] The high-performance lithium titanate negative electrode material for lithium batteries of the present invention is made by the...

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Abstract

The invention discloses a high-performance lithium battery lithium titanate negative electrode material. The high-performance lithium battery lithium titanate negative electrode material is characterized by comprising, by weight, 400 parts of lithium titanate, 3-4 parts of graphite, 2-3 parts of nano-copper powder, 1-2 parts of nano-aluminum powder, 2-3 parts of sodium dodecyl benzene sulfonate, 4-5 parts of modified silver power and an appropriate amount of water. By adding the modified silver power, the high-performance lithium battery lithium titanate negative electrode material has good cell dynamics performance, cycle performance and a high-magnification charge-discharge capacity, thereby improving the performance of a lithium ion battery adopting the high-performance lithium battery lithium titanate negative electrode material as the negative electrode material. The high-performance lithium battery lithium titanate negative electrode material has excellent charge-discharge performance, largely improves the cycling stability and the high-magnification charge-discharge capacity, adopts simply and easily implemented process, and can be used for industrially preparing high-performance lithium battery electrode materials.

Description

Technical field [0001] The invention relates to the field of chemical energy materials, in particular to a high-performance lithium titanate anode material for lithium batteries and a preparation method thereof. Background technique [0002] As a negative electrode material for lithium-ion batteries, lithium titanate, due to its high safety, high stability, long life and environmental protection, has become the negative electrode material of a new generation of lithium-ion batteries and is widely used in new energy vehicles, Electric motorcycles and applications requiring high safety, high stability and long cycle. (1) It is a zero-strain material with good cycle performance (2) The discharge voltage is stable, and the electrolyte does not decompose, which improves the safety performance of lithium batteries; (3) Compared with carbon anode materials, lithium titanate has high lithium ions Diffusion coefficient, high-rate charge and discharge, etc. (4) The potential of lithium ti...

Claims

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Application Information

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IPC IPC(8): H01M4/485H01M4/62
CPCH01M4/364H01M4/485Y02E60/10
Inventor 林彭桃君蒋森陈夕顺
Owner HEFEI HENGNENG NEW ENERGY TECH
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