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Lithium ion battery nickel-cobalt-manganese ternary composite anode material and method for preparing precursor thereof

A lithium-ion battery and ternary composite technology, which is applied to battery electrodes, electrical components, circuits, etc., can solve problems such as low specific capacity and potential safety hazards, and achieve the effects of uniform particle distribution, low cost, and good sphericity

Inactive Publication Date: 2012-12-05
ANHUI ALAND NEW ENERGY MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, commercial lithium-ion batteries still have some problems, such as low specific capacity and potential safety hazards. Therefore, research and development of new lithium-ion battery electrode materials with excellent performance has important theoretical and practical significance

Method used

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  • Lithium ion battery nickel-cobalt-manganese ternary composite anode material and method for preparing precursor thereof
  • Lithium ion battery nickel-cobalt-manganese ternary composite anode material and method for preparing precursor thereof
  • Lithium ion battery nickel-cobalt-manganese ternary composite anode material and method for preparing precursor thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] ①, raw material preparation

[0028] a, nickel-cobalt-manganese ion mixed solution, by Ni: Co: Mn=1: 1: 1 molar ratio is dissolved in hot water to make solution, the total concentration of three kinds of metal ions in the mixed solution is 1mo1 / L. The nickel salt is nickel nitrate, the manganese salt is manganese chloride, and the cobalt salt is cobalt acetate.

[0029] b, the preparation mass fraction is 25% NaOH solution and 20% ammonia solution.

[0030] c. Dissolve hydrogen peroxide in 4mol / L NaOH solution to prepare 1mol / L H 2 o 2 of NaOH solution.

[0031] ②, Ni 1 / 3 co 1 / 3 mn 1 / 3 (OH) 2 preparation of

[0032] a. Use pure water as the bottom liquid, raise the temperature to 40-50°C, start stirring, control the stirring speed at 150-180r / min, add ammonia water and sodium hydroxide, adjust the pH and pH of the bottom liquid, and maintain the alkalinity At 5-10g / L, the pH is controlled at 11-12.

[0033] b. Add nickel-cobalt-manganese ion mixture, ammonia s...

Embodiment 2

[0042] ①, raw material preparation

[0043] a, nickel-cobalt-manganese ion mixed solution, by Ni: Co: Mn=1: 1: 1 molar ratio is dissolved in hot water to make solution, the total concentration of three kinds of metal ions in the mixed solution is 3mol / L. The nickel salt is nickel chloride, the manganese salt is manganese nitrate, and the cobalt salt is cobalt sulfate.

[0044] b, the preparation mass fraction is 28% NaOH solution and 10% ammonia solution.

[0045] c. Dissolve hydrogen peroxide in 4mol / L NaOH solution to prepare 1.6mol / L H 2 o 2 of NaOH solution.

[0046] ②, Ni 1 / 3 co 1 / 3 mn 1 / 3 (OH) 2 preparation of

[0047] a. Use pure water as the bottom liquid, raise the temperature to 50-60°C, start stirring, control the stirring speed at 120-160r / min, add ammonia water and sodium hydroxide, adjust the pH and pH of the bottom liquid, and maintain the pH At 10-15g / L, the pH is controlled at 10.5-11.

[0048] b. Add nickel-cobalt-manganese ion mixture, ammonia solu...

Embodiment 3

[0057] ①, raw material preparation

[0058] a, nickel-cobalt-manganese ion mixed solution, by Ni: Co: Mn=1: 1: 1 molar ratio is dissolved in hot water to make solution, the total concentration of three kinds of metal ions in the mixed solution is 1.5mol / L. The nickel salt is nickel sulfate, the manganese salt is manganese sulfate, and the cobalt salt is cobalt sulfate.

[0059] b, the preparation mass fraction is 22% NaOH solution and 12% ammonia solution.

[0060] c. Dissolve hydrogen peroxide in 4mol / L NaOH solution to prepare 0.6mol / L H 2 o 2 of NaOH solution.

[0061] ②, Ni 1 / 3 co 1 / 3 mn 1 / 3 (OH) 2 preparation of

[0062] a. Use pure water as the bottom liquid, raise the temperature to 60-70°C, start stirring, control the stirring speed at 100-140r / min, add ammonia water and sodium hydroxide, adjust the alkalinity and pH of the bottom liquid, and maintain the alkalinity At 15-20g / L, the pH is controlled at 10-10.5.

[0063] b. Add nickel-cobalt-manganese ion mixt...

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Abstract

The invention relates to the field of lithium ion batteries, in particular to a lithium ion battery nickel-cobalt-manganese ternary composite anode material LiNi1 / 3Co1 / 3Mn1 / 3O2 and a method for preparing a precursor Ni1 / 3Co1 / 3Mn1 / 3OOH of the lithium ion battery nickel-cobalt-manganese ternary composite anode material. The method includes: subjecting nickel-cobalt-manganese ion mixed liquid and precipitant to precipitation reaction, obtaining a hydroxyl hydroxide precursor by procedures of pre-oxidation, washing, leaching and drying, mixing the precursor and a lithium source compound by means of ball milling proportionally, and calcining the mixture to obtain the lithium ion battery nickel-cobalt-manganese ternary composite anode material. The synthetic method is simple, easy in process control, high in efficiency, low in cost and suitable for industrial production, overhigh temperature calcinations is avoided, and the prepared lithium ion battery anode material is fine in sphericility, uniform in particle distribution and high in tap density and has fine electrochemical performance.

Description

technical field [0001] The invention relates to the field of lithium-ion battery materials, in particular to a lithium-ion battery nickel-cobalt-manganese ternary composite cathode material LiNi 1 / 3 co 1 / 3 mn 1 / 3 o 2 and its precursor Ni 1 / 3 co 1 / 3 mn 1 / 3 The preparation method of OOH. Background technique [0002] Due to the gradual reduction of petrochemical resources and the environmental pollution caused by traditional energy consumption, research and development of a new generation of renewable green energy and energy storage materials has become an important direction for the development of countries around the world. [0003] Due to its inherent characteristics and advantages, lithium-ion batteries have become the most effective energy storage power supply system since Sony's industrialization in 1990, and are widely used in communication products, digital products, power tools, hybrid electric vehicles and fields such as electric vehicles. However, commercial...

Claims

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Application Information

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IPC IPC(8): H01M4/505H01M4/525
CPCY02E60/122Y02E60/10
Inventor 王昌菊孙卫华孙朝军李世辉王艳红王锡芬
Owner ANHUI ALAND NEW ENERGY MATERIALS
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