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Anode material for lithium manganate battery

A lithium manganate battery and positive electrode material technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of low quality of modified lithium manganate, insufficient stability of structure, and insufficient uniform doping, etc., to achieve stable structure, Long life, low activity effect

Inactive Publication Date: 2018-01-26
柳州光华科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are still a variety of modified lithium manganese oxides in the market, but most of them are not stable enough in structure and not uniformly doped, resulting in low quality and poor performance of modified lithium manganate

Method used

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Embodiment Construction

[0009] The present invention will be described in detail below, and the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0010] A lithium manganate battery positive electrode material, which includes the following components in mass fractions: 350-450 parts of lithium manganate, 10-15 parts of boric acid, 1-2 parts of nickel, 2-3 parts of vanadium, 100-150 parts of silver, lanthanum 4-6 parts, 2-3 parts of magnesium, 2-3 parts of chromium, 1-2 parts of silicon, 1-2 parts of iron oxide and 1-2 parts of titanium oxide. in:

[0011] Lithium manganate as the basic material should ensure high purity; boric acid can improve the heat resistance of the material, increase the mechanical strength, shorten the melting time in the preparation process, and it can react with iron oxide, titanium oxide, etc. in the preparation process The formation of fine and dispersed Ti2B particles promote...

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Abstract

The invention relates to a battery anode material and specifically relates to an anode material for a lithium manganate battery. The anode material contains the following components in parts by weight: 350-450 parts of lithium manganate, 10-15 parts of boric acid, 1-2 parts of nickel, 2-3 parts of vanadium, 100-150 parts of silver, 4-6 parts of lanthanum, 2-3 parts of magnesium, 2-3 parts of chromium, 1-2 parts of silicon, 1-2 parts of ferric oxide and 1-2 parts of titanium oxide. According to the invention, the modifying elements, such as, silver, titanium and lanthanum, are added, and silverwith high conductivity, thermal conductivity, chemical property stability and low activity and the property of the silver for combining with the rare earth element lanthanum are utilized, so that thestructure stability of the prepared anode material for the lithium manganate battery can be guaranteed and the service life of the material is greatly prolonged.

Description

technical field [0001] The invention relates to a positive electrode material for a battery, in particular to a positive electrode material for a lithium manganate battery. Background technique [0002] The performance of lithium-ion batteries depends critically on the performance of its positive electrode materials. The commercialized positive electrode materials include lithium cobaltate, lithium manganate, lithium iron phosphate, etc. Among them, lithium cobaltate has the advantages of high capacity and high filling capacity, but As a strategic resource, cobalt has few reserves, is expensive, and the safety performance of lithium cobaltate is poor; lithium iron phosphate has the advantages of good safety and long cycle life, but its filling performance is poor and its volume specific energy is low; lithium manganate It has the advantages of high voltage, low price, environmental friendliness, and high safety performance, and is especially suitable for power battery fields...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/38
CPCY02E60/10
Inventor 陈萍姬周莉陈华
Owner 柳州光华科技有限公司