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One-step method for preparing high-magnification copper-doped lithium manganese dioxide lithium ion battery positive electrode material

A lithium ion battery, lithium heteromanganate technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of complex process steps, product specific capacity, rate performance and cycle performance can not meet the application of power battery and other problems

Inactive Publication Date: 2015-04-22
YUNNAN MINZU UNIV
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Problems solved by technology

[0007] The above methods all have complex process steps, and the specific capacity, rate performance and cycle performance of the product cannot meet the application of power batteries.

Method used

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  • One-step method for preparing high-magnification copper-doped lithium manganese dioxide lithium ion battery positive electrode material
  • One-step method for preparing high-magnification copper-doped lithium manganese dioxide lithium ion battery positive electrode material
  • One-step method for preparing high-magnification copper-doped lithium manganese dioxide lithium ion battery positive electrode material

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Experimental program
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Embodiment 1

[0024] Take 1.1411 g of lithium nitrate, 7.9106 g of manganese acetate and 0.1652 g of copper acetate in a 300 mL crucible, add 10 mL of 9 mol / L dilute nitric acid and stir to dissolve to obtain a uniform mixed solution. Put it into a muffle furnace with a preheated constant temperature of 600 °C, and close the door of the muffle furnace. After heating for 3 hours, take out the crucible from the muffle furnace and place it in the air to cool to room temperature to obtain the final product.

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Abstract

The invention discloses a preparation method of lithium manganese dioxide lithium ion battery positive electrode material with high magnification and excellent cyclic performance. The method particularly comprises the following steps of putting the reactants of lithium nitrate, manganese acetate and copper acetate into a crucible, adding a proper amount of nitric acid, combusting in a muffle furnace, and preserving heat, thereby obtaining the spinel LiCu0.05Mn1.95O2 electrode material. The preparation method of the LiCu0.05Mn1.95O4 lithium ion battery positive electrode material, which is disclosed by the invention, has the characteristics of operation simplicity, rapid synthesis speed, low cost and scale production is easy to achieve.

Description

technical field [0001] The invention relates to a preparation method of anode materials for lithium ion batteries, in particular to synthesizing spinel-type LiCu by liquid phase flameless combustion 0.05 mn 1.95 o 4 method of preparation. Background technique [0002] Lithium-ion batteries have been widely used in portable electronic devices such as computers, cameras, and mobile phones due to their high voltage, high energy density, long cycle life, good safety performance, and low cost. In recent years, countries around the world are actively carrying out research on the application of lithium-ion batteries to hybrid electric vehicles (HEV), pure electric vehicles (PEV), etc., but the main bottleneck of lithium-ion batteries as vehicle power batteries is the quality of lithium-ion battery cathode materials. performance. [0003] Spinel LiMn 2 o 4 Because of its high working voltage, abundant manganese resources, low price, non-toxicity and environmental friendliness,...

Claims

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Application Information

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IPC IPC(8): H01M4/58H01M4/62
CPCH01M4/38H01M4/505H01M4/62Y02E60/10
Inventor 郭俊明黄技军彭灿灿白红丽徐旺琼彭金辉苏长伟黄相中袁明龙
Owner YUNNAN MINZU UNIV
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