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Anode material, anode and lithium ion battery

A technology for lithium-ion batteries and positive electrode materials, which is applied to battery electrodes, secondary batteries, and electrode collector coatings. The first Coulombic efficiency, stable structure and chemical properties, and the effect of reducing production costs

Inactive Publication Date: 2018-11-13
桑德新能源技术开发有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong activity of lithium, it is necessary to strictly control the temperature and humidity of the environment during the preparation process, the process is complex, the preparation conditions are harsh, and the cost is high. In reality, it is difficult to effectively control the amount of lithium supplementation.

Method used

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  • Anode material, anode and lithium ion battery

Examples

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Effect test

Embodiment 1

[0049] This embodiment is a positive electrode, including aluminum foil and a positive electrode material coated on the surface of the aluminum foil.

[0050] The mass ratio is 92.5% high-nickel NCM ternary material (NCM is NCM 811), 5% lithium-rich manganese-based solid solution material 0.3Li 2 MnO 3 0.7LiMn 0.333 Ni 0.333 co 0.333 o 2 , 1% carbon nanotubes, and 1.5% polyvinylidene fluoride were made into a slurry, coated on the surface of aluminum foil, dried, rolled and die-cut to obtain the positive electrode A1.

Embodiment 2

[0052] This embodiment is a positive electrode, including aluminum foil and a positive electrode material coated on the surface of the aluminum foil.

[0053] The mass ratio is 87.5% high-nickel NCM ternary material (NCM is NCM 811), 10% lithium-rich manganese-based solid solution material 0.3Li 2 MnO 3 0.7 Li Mn 0.333 Ni 0.333 co 0.333 o 2 , 1% of carbon nanotubes, and 1.5% of polyvinylidene fluoride were made into slurry, coated on the surface of aluminum foil, dried, rolled and die-cut to obtain the positive electrode A2.

Embodiment 3

[0055] This embodiment is a positive electrode, including aluminum foil and a positive electrode material coated on the surface of the aluminum foil.

[0056] The mass ratio is 82.5% high-nickel NCM ternary material (NCM is NCM 811), 15% lithium-rich manganese-based solid solution material 0.3Li 2 MnO 3 0.7 Li Mn 0.333 Ni 0.333 co 0.333 o 2 , 1% of carbon nanotubes, and 1.5% of polyvinylidene fluoride were made into slurry, coated on the surface of aluminum foil, dried, rolled and die-cut to obtain the positive electrode A3.

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Abstract

The invention provides an anode material, an anode and a lithium ion battery, and relates to the technical field of lithium ion batteries. The anode material includes the following components in weight percentage: 59-90% of anode active materials, 9.5-40% of lithium and manganese enriched solid solution materials, 0.1-10% of a conductive agent and 0.1-10% of an anode binder. Through adopting the anode material, the technical problems in the prior art that the preparation technology is complicated, the condition is strict, the cost is high and the effective control to the lithium supplement amount is difficult in reality as lithium powder or lithium sheets is adopted as a lithium supplement material in the silica-based cathode lithium ion battery are alleviated, so that the technical effects that preparation technology is simplified, and the lithium supplement cost is reduced are reached.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a positive electrode material, a positive electrode and a lithium ion battery. Background technique [0002] With the development of new energy vehicles, improving the energy density and cycle life of power batteries has become an urgent need for the development of new energy vehicles. With the improvement of market demand, the energy density of lithium-ion batteries urgently needs to be increased, and the search for positive and negative electrode materials with larger capacity has become one of the hotspots in the field of battery research today. [0003] The demand for high energy density of lithium-ion batteries puts forward higher requirements for the selection of negative electrode materials. The current negative electrode materials are mostly graphite materials. In the current lithium-ion batteries, they have basically fully utilized their achievable energy ...

Claims

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Application Information

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IPC IPC(8): H01M4/505H01M4/62H01M4/131H01M4/04H01M10/0525
CPCH01M4/0404H01M4/131H01M4/505H01M4/621H01M4/624H01M10/0525Y02E60/10
Inventor 范欢欢孙敏敏娄忠良
Owner 桑德新能源技术开发有限公司
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