A kind of preparation method of lithium-ion battery spherical cathode material

A technology for lithium-ion batteries and positive electrode materials, which is applied in the field of preparation of lithium-ion battery positive electrode materials, can solve the problems of low efficiency of lithium-ion battery materials for the first time, and achieve the effects of large-scale production, low energy consumption, and short reaction cycle

Active Publication Date: 2016-08-31
四川省有色冶金研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the lithium-ion battery material produced by it is too inefficient for the first time

Method used

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  • A kind of preparation method of lithium-ion battery spherical cathode material
  • A kind of preparation method of lithium-ion battery spherical cathode material
  • A kind of preparation method of lithium-ion battery spherical cathode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1 Lithium-ion battery cathode material [Nitric acid] copper doped LiFePO 4 Preparation

[0053] 1. Screening of raw materials and calculation of theoretical addition

[0054] Raw materials: lithium carbonate (purity of 99.9%), copper nitrate (purity of 99%), phosphoric acid (purity of 85%), ferrous oxalate (purity of 99.5%).

[0055] Dispersant: polyethylene glycol PEG10000.

[0056] Carbon source: sucrose.

[0057] Synthesis of 2Kg copper doped LiFePO 4 The amount of raw materials to be added is as follows:

[0058] m(lithium carbonate Li 2 CO 3 )=0.489Kg

[0059] m(copper nitrate Cu(NO 3 ) 2 ·3H 2 O)=61.815g

[0060] m(phosphoric acid H 3 PO 4 )=1.462Kg

[0061] m (ferrous oxalate FeC 2 O 4 ·2H 2 O)=2.25Kg

[0062] m(PEG10000)=100g

[0063] m(sucrose)=200g

[0064] Zirconia ball: diameter Φ2mm, weight 5Kg

[0065] Deionized water: 4Kg.

[0066] 2. Preparation method

[0067] 1. Horizontal sand mill mixed processing raw materials:

[0068] Mix 61.815g of copper nitrate, 1.462Kg of ...

Embodiment 2

[0077] Example 2 LiCo Ternary Cathode Material LiCo 1 / 3 Mn 1 / 3 Ni 1 / 3 O 2 Preparation

[0078] 1. Screening of raw materials and calculation of theoretical addition

[0079] Raw materials: lithium carbonate (purity of 99.9%), nickel acetate (purity of 99.9%), manganese acetate (purity of 99.9%), cobalt acetate (purity of 99.9%);

[0080] Dispersant: polyethylene glycol PEG10000;

[0081] Synthesize 2kg ternary cathode material LiCo 1 / 3 Mn 1 / 3 Ni 1 / 3 O 2 The amount of raw materials to be added is as follows:

[0082] m(lithium carbonate Li 2 CO 3 )=1.53Kg

[0083] m(Cobalt acetate C 4 H 6 O 4 Co·4H 2 O)=1.72Kg

[0084] m(Manganese acetate C 4 H 6 O 4 Mn·4H 2 O)=1.69Kg

[0085] m(nickel acetate C 4 H 6 O 4 Ni·4H 2 O)=1.72Kg

[0086] m(PEG10000)=200g

[0087] Zirconia ball: diameter Φ2mm, weight 5Kg

[0088] Deionized water: 4Kg.

[0089] 2. Preparation method

[0090] 1. Horizontal sand mill mixed processing raw materials:

[0091] Add 1.72Kg of cobalt acetate, 1.72Kg of nickel acetate and 1.69Kg ...

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Abstract

The invention discloses a preparation method for a spherical cathode material of a lithium ion battery. The preparation method for the spherical cathode material of the lithium ion battery comprises the following steps: sanding raw materials and a solvent in a sand mill; performing spray drying and calcining. According to the preparation method, three good synthesis methods, namely a wet grinding method, a spray drying method and a solid-liquid compounding method are combined successfully and are used for synthesizing the cathode material of the lithium ion battery, and a powder material with a uniform spherical shape, uniform particle diameters, good parameters, and excellent performance is obtained.

Description

Technical field [0001] The invention belongs to the field of preparation of lithium ion battery cathode materials, and specifically relates to a method for preparing a lithium ion battery spherical anode material. Background technique [0002] With the rapid development of current technology, various electrical and electronic products emerge in an endless stream, and people’s demand for energy is also increasing. The oil crisis and global warming caused by this have also made the establishment of a sustainable and harmonious development, low-carbon and environmentally friendly society an era. Theme of. Finding new and high-quality alternative energy sources, as well as reasonable storage and use of energy are issues that we cannot ignore, and it is urgent to solve these issues. Batteries are undoubtedly the best choice for energy storage and rational use of energy. Lithium ion secondary batteries are a new type of chemical power source developed after nickel-hydrogen and nickel-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/58H01M4/62H01M4/505H01M4/525H01M4/04
CPCH01M4/505H01M4/525H01M4/5825H01M4/62H01M10/0525Y02E60/10
Inventor 李海英羊坤宋明万宁李汶骏
Owner 四川省有色冶金研究院有限公司
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