A ball hydroxide oxidated Ni-Co-Mn and its making method

A nickel oxyhydroxide, spherical technology, applied in chemical instruments and methods, inorganic chemistry, nickel compounds, etc., can solve the problems of affecting volume specific capacity, long time, low reactivity, etc.

Inactive Publication Date: 2008-02-20
HENAN NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is reported in the current literature that its tap density is low, which directly affects the LiNi 1-x-y co x mn y o 2 volume specific capacity
In order to improve the tap density of the material, some documents (US2005/0089756A1) and Chinese patent application number 200410103486.8 prepared spherical Ni 1-x-y co x mn y (OH) 2 , and then use this as a precursor with Li 2 CO 3 Prep

Method used

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  • A ball hydroxide oxidated Ni-Co-Mn and its making method

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Embodiment 1

[0007] Prepare the mixed solution of nickel sulfate, cobalt sulfate and manganese sulfate of 1.5mol / L, wherein the ratio of the substance amount (moles) of nickel, cobalt and manganese element is 1: 1: 1, under vigorous stirring, mix solution and 25% ammonia solution was fed into the 100L reactor at the flow rate of 10L / h and 1L / h respectively, and 8mol / L sodium hydroxide solution was added in parallel to control the pH value to 11.5, the reaction temperature was 60°C, and the upper continuous Spherical Ni 1 / 3 co 1 / 3 mn 1 / 3 (OH) 2 . The prepared spherical Ni 1 / 3 co 1 / 3 mn 1 / 3 (OH) 2 According to the ratio of solid to liquid 1:4 and deionized water into another reactor, then add 600ml of 30% H2O per kg of solids 2 o 2 The solution was stirred and reacted for 4 hours at a certain speed, and the product of the present invention was obtained by filtering, washing and drying.

Embodiment 2

[0009] Spherical Ni 1 / 3 co 1 / 3 mn 1 / 3 (OH) 2 The preparation is the same as example 1, the spherical Ni of preparation 1 / 3 co 1 / 3 mn 1 / 3 (OH) 2 Add 1:2 solid-liquid ratio and deionized water into another reaction kettle, then add 4.5L of 10% NaClO solution per kg of solid matter, stir and react at a certain speed for 6h, and obtain this product through filtration, washing and drying. Invent products.

Embodiment 3

[0011] Spherical Ni 1 / 3 co 1 / 3 mn 1 / 3 (OH) 2 The preparation is the same as example 1, the spherical Ni of preparation 1 / 3 co 1 / 3 mn 1 / 3 (OH) 2 Add 1:6 solid-to-liquid ratio and deionized water into another reactor, and then add 1.5kg K per kg of solids 2 S 2 o 4 , stirred and reacted at a certain speed for 8 hours, and the product of the present invention was obtained by filtering, washing and drying.

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Abstract

The utility model discloses a spherical hydroxyl nickel oxide cobalt manganese and the fabrication method, relating to the anode material of a lithium battery, and aiming to provide a spherical hydroxyl nickel oxide cobalt manganese and the fabrication method. The fabricated anode material of the lithium battery has the advantages of big tap density, good electrochemical activity, big specific volumetric capacity, low synthesis temperature and short reaction time. The key points of the technical proposal of the utility model are that: the general formula of the spherical hydroxyl nickel oxide cobalt manganese is Ni1-x-yCoxMnyOOH; the spherical hydroxyl nickel oxide cobalt manganese and the fabrication method comprise the following steps: (1)a mixed salt solution of nickel, cobalt and manganese is confected according to the ratio that Ni:Co:Mn=1:(1/5-2/5):(1/5-2/5); (2) an alkaline solution of two to ten mol/L is confected; (3) the mixed salt solution of nickel, cobalt and manganese, the alkaline solution and the ammonia are conducted to an reaction kettle; (4) the intermediate products are added to the reaction kettle according to the solid-liquid ratio of 1:2 to 10, and reacted with the oxidant to produce the utility model. The utility model is used as the anode material of lithium batteries.

Description

Technical field: [0001] The invention relates to a lithium battery cathode material, in particular to a spherical nickel-cobalt-manganese oxyhydroxide and a preparation method thereof. Background technique: [0002] With Li(Ni 1 / 3 co 1 / 3 mn 1 / 3 )O 2 The representative multi-component composite metal oxide LiNi doped with Co and Mn 1-x-y co x mn y o 2 , (1 / 10≤x≤2 / 5, 1 / 10≤y≤2 / 5) has the advantages of Co-based, Ni-based and Mn-based cathode materials: high specific capacity, good cycle performance, and good thermal stability It is also environmentally friendly, the preparation conditions are relatively mild, and the material cost is low. It is expected to become a new generation of lithium-ion cathode materials. However, it is reported in the current literature that its tap density is low, which directly affects the LiNi 1-x-y co x mn y o 2 volume ratio capacity. In order to improve the tap density of the material, some documents (US2005 / 0089756A1) and Chinese pate...

Claims

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Application Information

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IPC IPC(8): H01M4/48H01M4/52H01M4/58H01M4/04C01G1/02C01G53/00C01G51/00C01G45/00
CPCY02E60/12Y02E60/10
Inventor 常照荣陈中军汤宏伟吴锋程迪徐拥军尹正中
Owner HENAN NORMAL UNIV
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