Method for synthesizing lithium battery anode material precursor raw material through nickel protoxide reclaimed materials

A cathode material, nickel oxide technology, applied in the field of waste recycling, can solve the problems of difficulty in recycling waste nickel oxide and high recycling cost, and achieve the effects of significant economic benefits, low cost and short process flow

Active Publication Date: 2019-05-31
LANZHOU JINCHUAN NEW MATERIAL SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems in the prior art that the recycling of waste nickel oxide is difficult and the recycling cost is high, the present invention provides a method for synthesizing the precursor raw material of lithium battery positive electrode material using recycled nickel oxide material. The method includes the following steps:

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  • Method for synthesizing lithium battery anode material precursor raw material through nickel protoxide reclaimed materials

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Embodiment 1

[0021] After mechanically activating the recycled nickel oxide with a vibrating mill for 10 minutes, add 1.45 L of water to the beaker, heat to 100°C, weigh 700 g of mechanically activated nickel oxide and slowly add it to the beaker, add 500 mL of 98% sulfuric acid dropwise, and leaching for 10 hours. Nickel oxide is completely dissolved. Dilute the leaching solution with 4.35L of water to a nickel concentration of about 90g / L, cool down to 60°C, take 10g of lithium battery cathode material waste and add it to a beaker, and dissolve it for 0.5h first. After the acidity of the solution is reduced, add 5mL of hydrogen peroxide dropwise. 4.0, solid-liquid separation, the solution is mixed with 947g of cobalt sulfate and 815g of manganese sulfate, and at the same time diluted with water to the total ion concentration of nickel, cobalt, and manganese in the solution to 90g / L, to obtain the precursor solution of the precursor of the lithium battery cathode material, which can be use...

Embodiment 2

[0023] After mechanically activating nickelous oxide reclaimed material with vibrating mill for 30min, take 1000g and put it in 7L pure water, add 715mL of concentrated sulfuric acid at a rate of 0.5L / h, the leaching acid concentration is 1.8mol / L, heat up to 80°C, stir and leaching for 5h , the nickelous oxide is completely dissolved, add 1.5L pure water to the reaction vessel, the reaction temperature is 60°C, add 10g of waste ternary precursor material, after dissolving for 0.5h, add 3g of sodium sulfite until the pH value of the solution is 4.6, filter, and the filtrate Add 427g of cobalt sulfate and 245g of manganese sulfate, add water to dilute to a metal ion concentration of 9090g / L in the solution, and obtain a precursor solution for the synthesis of the precursor of the lithium battery positive electrode material, which can be used to synthesize the lithium battery positive electrode material.

Embodiment 3

[0025] Add 3.75L of 6moL / L sulfuric acid to the 30L reaction kettle, preheat to 90°C, start stirring, and mechanically activate the nickelous oxide recovery material with a vibrating mill for 20 minutes, weigh 1724g immediately, add it to the reaction kettle, and stir and leach for 1.0h. After the reclaimed material of nickelous oxide is completely dissolved, add 7L of pure water to the reaction kettle, add 15g of cobalt powder, and dissolve for 0.5h first. After the acidity of the solution is reduced, add 7mL of hydrogen peroxide dropwise. 740g of cobalt sulfate and 425g of manganese sulfate are diluted with water to a metal ion concentration of 90g / L in the solution to obtain a precursor solution for the synthesis of the precursor of the lithium battery cathode material, which can be used to synthesize the lithium battery cathode material.

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Abstract

The invention relates to the field of waste recycling, and discloses a method for synthesizing a lithium battery anode material precursor raw material through nickel protoxide reclaimed materials. Themethod comprises the following steps that (1) the nickel protoxide reclaimed materials are mechanically activated; (2) the mechanically activated nickel protoxide reclaimed materials are leached withsulfuric acid; (3) nickel, cobalt and manganese containing materials easy to dissolve in water are added to the leachate to consume sulfuric acid in step 2, hydrogen peroxide is added until the pH value is above 4, and after solid and liquid are separated, the nickel leachate is obtained; and 4, sulfate crystals are added to the nickel leachate with acid consumed according to the proportion requirement of a nickel, cobalt and manganese lithium battery anode material, and a lithium battery anode material precursor solution is prepared. The method is short in process, simple, feasible, low in cost and low in investment, the nickel protoxide recycling rate is high, industrialization is easy to achieve, and the economic and social benefits are obvious.

Description

technical field [0001] The invention belongs to the field of recycling waste materials, and in particular relates to a method for synthesizing a precursor raw material of a positive electrode material of a lithium battery by using a recovered material of nickelous oxide. Background technique [0002] Lithium-ion batteries are currently the chemical batteries with the best rechargeable performance that have been industrialized in the world. In recent years, there are hundreds of millions of lithium-ion batteries produced every year, and the annual growth rate is more than 20%. The demand for nickel and cobalt, the raw materials required for the production of lithium-ion batteries, has also grown rapidly with the rapid development of the lithium-ion battery industry. Nickel-cobalt-manganese-based ternary lithium-ion battery cathode materials have become the mainstream products of lithium-ion batteries. In recent years High-nickel lithium-ion batteries will become the developme...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B23/00C22B47/00
CPCY02P10/20
Inventor 柴艮风马骞冯玉洁王国超李伟常雪洁王悦吴芳江名喜鲁相杰
Owner LANZHOU JINCHUAN NEW MATERIAL SCI & TECH
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