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Positive electrode material used for lithium ion secondary battery,, and manufacturing method thereof

A technology for secondary batteries and positive electrode materials, applied to battery electrodes, circuits, electrical components, etc., can solve problems such as cost, uneven distribution, and unstable raw material supply, and achieve excellent cycle characteristics

Active Publication Date: 2013-09-04
NANTONG RESHINE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using LiCoO 2 When used as a positive electrode active material, the discharge capacity is about 160mA / g, and it is practically used as LiCo0 2 Cobalt as a raw material is a scarce resource and is unevenly distributed, so it costs money and the supply of raw materials is unstable

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0018] The positive electrode material that lithium ion secondary battery is used, the positive electrode material that lithium ion secondary battery is used is with general formula Li x Ni 1-y-z co y mn z Mg a Ti b Al c o 2 Indicates that x is 1.00, y is 0.1, z is 0.1, a is 0, b is 0, and c is 0. The weight content of Mg atoms is 0.05%, the weight content of Ti atoms is 0.05%, and the weight content of Al atoms is 0.2%.

[0019] The manufacture method of the positive electrode material that lithium ion secondary battery is used, lithium compound, the compound that comprises nickel atom, cobalt atom and manganese atom, titanium oxide, magnesium carbonate and aluminum oxide, these three kinds of materials are lithium atom with respect to nickel atom, The atomic ratio (Li / {Ni+Co+Mn+Ti+Mg+Al}) of cobalt atom, manganese atom, titanium atom, magnesium atom and aluminum atom is 1.01 and mixed quantitatively, and then calcined to generate the required positive electrode materi...

Embodiment 2

[0021] The positive electrode material that lithium ion secondary battery is used, the positive electrode material that lithium ion secondary battery is used is with general formula Li x Ni 1-y-z co y mn z Mg a Ti b Al c o 2 Indicates that x is 1.05, y is 0.3, z is 0.3, a is 0.1, b is 0.1, and c is 0.1. The weight content of Mg atoms is 2%, the weight content of Ti atoms is 2%, and the weight content of Al atoms is 2%.

[0022] The manufacture method of the positive electrode material that lithium ion secondary battery is used, lithium compound, the compound that comprises nickel atom, cobalt atom and manganese atom, titanium oxide, magnesium carbonate and aluminum oxide, these three kinds of materials are lithium atom with respect to nickel atom, The atomic ratio (Li / {Ni+Co+Mn+Ti+Mg+Al}) of cobalt atom, manganese atom, titanium atom, magnesium atom and aluminum atom is 1.10 and mixed quantitatively, and then calcined to generate the required positive electrode material...

Embodiment 3

[0024] The positive electrode material that lithium ion secondary battery is used, the positive electrode material that lithium ion secondary battery is used is with general formula Li x Ni 1-y-z co y mn z Mg a Ti b Al c o 2 That is, x is 1.02, y is 0.2, z is 0.2, a is 0.05, b is 0.03, and c is 0.04. The weight content of Mg atoms is 1.05%, the weight content of Ti atoms is 1.10%, and the weight content of Al atoms is 1.2%.

[0025] The manufacture method of the positive electrode material that lithium ion secondary battery is used, lithium compound, the compound that comprises nickel atom, cobalt atom and manganese atom, titanium oxide, magnesium carbonate and aluminum oxide, these three kinds of materials are lithium atom with respect to nickel atom, The atomic ratio (Li / {Ni+Co+Mn+Ti+Mg+Al}) of cobalt atom, manganese atom, titanium atom, magnesium atom and aluminum atom is 1.05 and mixed quantitatively, and then calcined to generate the required positive electrode mat...

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Abstract

The invention discloses a positive electrode material used for a lithium ion secondary battery, and a manufacturing method thereof. The positive electrode material used for the lithium ion secondary battery is shown as a general formula of LixNi1-y-zCoyMnzMgaTibAlcO2, wherein 0.95 =< x <= 1.30; 0 =< y <= 0.6; 0 =< z <= 0.8; y + z < 1; 0 =< a <= 0.1; 0 =< b <= 0.1; and 0 =< c <= 0.1. A positive electrode active material used for a lithium nickel cobalt and manganese composite oxide lithium secondary battery capable of giving extremely excellent cycle characteristics to the lithium secondary battery, a method for manufacturing the positive electrode active material by an industrial benefit method and the lithium secondary battery applying the positive electrode active material particularly the lithium secondary battery with the excellent cycle characteristics are provided by the invention.

Description

technical field [0001] The present invention specifically relates to a positive electrode material for a lithium ion secondary battery and a manufacturing method thereof. Background technique [0002] In recent years, with the popularization and miniaturization of portable devices such as mobile phones and notebook computers, non-aqueous electrolyte secondary batteries such as lithium-ion secondary batteries have gradually been used as their power sources. In addition, from the perspective of coping with recent environmental problems, it is also attracting attention as a power battery for electric vehicles and the like. [0003] Generally, LiCoO is widely used as a positive electrode active material for lithium secondary batteries. 2 (lithium cobaltate) as a substance that can constitute a 4V-class secondary battery. Using LiCoO 2 When used as a positive electrode active material, the discharge capacity is about 160mA / g, and it is practically used as LiCo0 2 Cobalt as a...

Claims

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Application Information

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IPC IPC(8): H01M4/505H01M4/525H01M4/485
CPCY02E60/10
Inventor 张新龙陈亮王梁梁刘奇朱祥
Owner NANTONG RESHINE NEW MATERIAL
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