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Lithium ion battery positive electrode material precursor nickel-cobalt-manganese hydroxide powder and preparation method thereof

A technology of nickel-cobalt-manganese-hydrogen and lithium-ion batteries, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as different crystal structures and limited substitutions, and achieve improved battery expansion, prevention of battery expansion, and thermal stability good sex effect

Active Publication Date: 2013-09-25
兰州金通储能动力新材料有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

On the other hand, although LiMn2O4 is a stable system compared to LiNiO2 or LiCoO2, the amount that can be substituted is limited due to the difference in crystal structure.

Method used

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions of the embodiments of the present invention.

[0027] The present invention discloses a nickel-cobalt-manganese-manganese oxyhydroxide powder for lithium-ion battery anode materials. The nickel-cobalt-manganese oxyhydroxide is represented by the general formula NixCoyMnz(OH), wherein the molar ratio of Ni:Co:Mn ( mol% ) is x:y:z, preferably x is 10~75mol%, y is 5~55mol%, z is 5~65mol%, and x+y+z=100mol%.

[0028] The BET specific surface area of ​​the nickel-cobalt-manganese hydroxide compound is 0.1-10.0 m 2 / g, if the BET specific surface area value is less than 0.l m 2 / g, it is difficult to obtain the nickel-cobalt-manganese hydroxide compound in industrial synthesis; if the BET specific surface area value is greater than 10.0 m 2 / g, the lithium composite oxide made of the nickel-cobalt-manganese hydroxide compound cannot meet the target specific surface area, and when it is made into an e...

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Abstract

The invention discloses lithium ion battery positive electrode material precursor nickel-cobalt-manganese hydroxide powder and a preparation method thereof. The lithium ion battery positive electrode material precursor nickel-cobalt-manganese hydroxide powder is represented by the general formula NixCoyMnz(OH)2. The preparation method comprises the steps that an alkali solution is added into a reaction device; a metal salt solution comprising nickel-cobalt-manganese and an alkali solution are continuously dropped on the liquid level of the alkali solution, such that a neutralization precipitation reaction is carried out; the produced nickel-cobalt-manganese hydroxide slurry is concentrated and is introduced into the reaction device, and a reaction is continued; final product nickel-cobalt-manganese hydroxide slurry is fetched, and is filtered and dried. The nickel-cobalt-manganese hydroxide provided by the invention has the advantages of uniform particle size, less micro-powder, high crystallinity, and large primary particles.

Description

technical field [0001] The invention relates to a lithium ion battery electrode material precursor material powder and a manufacturing method, in particular to a lithium ion battery positive electrode material precursor nickel cobalt manganese hydroxide compound powder and a manufacturing method. Background technique [0002] In today's society, digital products such as mobile devices and personal computers are used more and more widely, and the demand for small, light-weight secondary batteries with high energy density is increasing as a power source for driving these devices. Under such circumstances, lithium-ion batteries with high charge and discharge voltage and large charge and discharge capacity have attracted attention. [0003] Conventionally, LiMn2O4 with a spinel structure, LiMnO2 with a zigzag layered structure, and LiMnO2 with a layered rock-salt structure are generally known as positive electrode active materials that can be used in high-energy lithium-ion seco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/131H01M4/1391
CPCY02E60/10
Inventor 张新龙陈亮王梁梁刘奇朱祥
Owner 兰州金通储能动力新材料有限公司
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