Nickel-cobalt-manganese ternary precursor material and synthetic method thereof

A synthesis method and precursor technology, applied in the field of nickel-cobalt-manganese ternary precursor material and its synthesis, can solve the problem of no synthesis method of precursor material with smaller average particle size

Inactive Publication Date: 2018-11-13
CHINA ENFI ENGINEERING CORPORATION
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  • Abstract
  • Description
  • Claims
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Benefits of technology

The technology described in this patented process allows for better control over the final product's properties such as specific surface area (SSA) or crystal structure. This results in higher quality products that are easier to produce compared to previous methods.

Problems solved by technology

This patented technical problem addressed in the patents relating to the production of new types of advanced ceramic composites that combine properties like strength, durability, heat resistance, electrical conductivity, chemical stability, thermal shock behavior, cycling characteristics, and environmental friendliness. These advancements require precise control over these factors while maintaining consistence across all three dimensions.

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  • Nickel-cobalt-manganese ternary precursor material and synthetic method thereof
  • Nickel-cobalt-manganese ternary precursor material and synthetic method thereof

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[0031] According to a typical embodiment of the present invention, a method for synthesizing a nickel-cobalt-manganese ternary precursor material is provided. The synthesis method comprises the following steps: preparing a metal salt solution containing nickel sulfate, cobalt sulfate and manganese sulfate, adding the metal salt solution, sodium hydroxide solution and ammonia water into a reactor to synthesize a crystal seed; putting the crystal seed into a co-precipitation reactor The co-precipitation reaction is carried out in the co-precipitation reactor, which contains metal salt solution, sodium hydroxide solution and ammonia water, and the nickel-cobalt-manganese ternary precursor is obtained by controlling the number of seed crystal returns and the reaction time until the particle size reaches a predetermined value. Material.

[0032] Applying the technical solution of the present invention, the synthesized primary particles are used as crystal seeds and added to the pre...

Embodiment 1

[0045] Prepare nickel sulfate, cobalt sulfate, and manganese sulfate solutions with a concentration of 1.5mol / L according to the prescribed ratio (5:2:3) and mix them uniformly. The concentration of the sodium hydroxide solution is 4mol / L. Mix the metal salt solution, Sodium hydroxide solution and ammonia water (0.5mol / L) are added in the seed crystal synthesis kettle with a certain flow rate. The parameters that need to be controlled during the reaction process are stirring speed (1000r / min), slurry temperature (55°C) and pH value (10.5), etc., and the seed crystal preparation time is 4h. Then add the crystal seeds into the co-precipitation reactor, and return the co-precipitation reaction several times (5 times) in the manner of full seed crystal return. The parameters that need to be controlled in this process include stirring speed (700r / min), reaction temperature (60°C ), pH value (12.0), densely filtered, washed and dried to become a ternary material precursor. The part...

Embodiment 2

[0047] Prepare nickel sulfate, cobalt sulfate, and manganese sulfate solutions with a concentration of 2.5mol / L according to the prescribed ratio (5:2:3) and mix them uniformly. The concentration of the sodium hydroxide solution is 3mol / L. Mix the metal salt solution, Sodium hydroxide solution and ammonia water (1.0mol / L) were added into the seed crystal synthesis kettle at a certain flow rate. The parameters that need to be controlled during the reaction process are stirring speed (800r / min), slurry temperature (60°C) and pH value (11.0), etc., and the seed crystal preparation time is 4h. Then add the crystal seeds into the co-precipitation reactor, and return the co-precipitation reaction several times (4 times) in the way of full seed crystal return. The parameters that need to be controlled in this process are stirring speed (600r / min), reaction temperature (58 ℃ ), pH value (11.5), densely filtered, washed and dried to become a ternary material precursor. The particle si...

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Abstract

The invention discloses a nickel-cobalt-manganese ternary precursor material and a synthetic method thereof. The method comprises the following steps: preparing a metal salt solution containing nickelsulfate, cobalt sulfate and manganese sulfate, and adding the metal salt solution, a sodium hydroxide solution and ammonium hydroxide into a synthesis reactor to synthesize a seed crystal; adding theseed crystal into a co-precipitation reactor for carrying out a co-precipitation reaction, wherein the co-precipitation reactor contains the metal salt solution, the sodium hydroxide and ammonium hydroxide, and controlling the seed crystal recycling times and reaction time of the co-precipitation reactor until the particle size reaches a preset value, thereby obtaining the nickel-cobalt-manganeseternary precursor material. According to the synthetic method of the nickel-cobalt-manganese ternary precursor provided by the technical scheme of the invention, the particles of small mean particlesize and high tap density can be successfully obtained, the defects of the prior art are overcome, any great influence on equipment and related operating parameters is avoided, and the aim of producing high-quality precursor materials can be achieved.

Description

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Claims

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Application Information

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Owner CHINA ENFI ENGINEERING CORPORATION
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