Anode material for lithium ion battery

A lithium-ion battery, cathode material technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of large irreversible capacity loss, no good solution, unstable structure, etc., and achieve excellent electrochemical performance and lattice parameters. The effect of small change and stable structure
CN103456946AActive Publication Date: 2013-12-18HUNAN LIFANG NEW ENERGY SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUNAN LIFANG NEW ENERGY SCI & TECH
Publication Date
2013-12-18

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Abstract

The invention belongs to the technical field of lithium ion batteries, and particularly relates to an anode material for a lithium ion battery. The anode material is in a laminated structure, and the expression of the anode material is Li1+zNixMnyA1-x-yO2; the anode material further comprises a metal oxide or a metal fluoride coated on the surface of the Li1+zNixMnyA1-x-yO2. Compared with the prior art, according to the Li1+zNixMnyA1-x-yO2 provided by the invention, although x is greater than 0.5, and an appropriate synthetic process is adopted, the structure thereof is extremely stable, and the cycle performance of the anode material for the lithium ion battery containing the anode material is good; moreover, the content of Ni is high, thus the specific capacity of the anode material disclosed by the invention is higher and achieves more than 130 mAh / g; moreover, the material is in the laminated structure, so that the multiplying performance is good, and the lithium ion battery can be quickly charged or discharged.
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Description

technical field

[0001] The invention belongs to the technical field of lithium ion batteries, in particular to a lithium ion battery cathode material with good structural stability and high specific capacity. Background technique

[0002] Lithium-ion batteries have become one of the most widely used secondary batteries due to their advantages such as high energy density, good cycle performance, high operating voltage, and no memory effect. With the rapid development of electronic technology, people put forward higher energy density and longer cycle performance requirements for lithium-ion batteries. Therefore, the development of high-performance cathode materials is particularly important for the development of lithium-ion batteries.

[0003] Among the currently commercialized cathode materials for lithium-ion batteries, the most widely used and mature cathode material is lithium cobalt oxide (LiCoO 2 ). Although LiCoO 2 The theoretical gram capacity is 275mAh / g, but its...

Claims

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