A kind of method for preparing nickel-cobalt-manganese ternary material precursor

A ternary material and precursor technology, which can be used in chemical instruments and methods, nickel compounds, electrical components, etc., and can solve the problem that stabilizers are difficult to stabilize.

Active Publication Date: 2022-07-15
HUBEI BAIJIERUI ADVANCED MATERIALS
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Problems solved by technology

[0004] The application provides a method for preparing the precursor of the nickel-cobalt-manganese ternary material to solve the technical problem that the stabilizer is difficult to stabilize in the prior art

Method used

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  • A kind of method for preparing nickel-cobalt-manganese ternary material precursor
  • A kind of method for preparing nickel-cobalt-manganese ternary material precursor

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experiment example

[0107] The nickel-cobalt-manganese ternary precursors obtained in Examples 1-3 and Comparative Examples 1-6 were tested for the content of nickel-cobalt-manganese, and the obtained nickel-cobalt-manganese ternary precursors and lithium hydroxide powders were determined according to lithium hydroxide. The ratio of molar amount to the sum of the molar amounts of nickel, cobalt, and manganese is 1:0.98. After mixing uniformly, it is calcined at 1200 ° C for 6 hours to obtain nickel-cobalt lithium manganate cathode material, and the particle size of the cathode material is tested and tapped Density, first discharge specific capacity at 0.1C rate and capacity retention rate after 100 cycles of charge and discharge, test methods and test results are as follows:

[0108] Detection method for the content of nickel, cobalt and manganese: determined by GBT-1506-2002 potentiometric titration.

[0109] The detection method of particle size tap density: refer to the "Chinese Pharmacopoeia"...

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Abstract

The present application relates to the field of new energy battery precursors, in particular to a method for preparing a nickel-cobalt-manganese ternary material precursor, the method comprising: preparing a metal salt solution containing nickel ions, cobalt ions and manganese ions; obtaining sodium hydroxide solution and complexing agent; the metal salt solution, the sodium hydroxide solution and the complexing agent are passed into the reaction kettle at a preset rate for chemical reaction to generate a nickel-cobalt-manganese ternary material precursor; The phosphonic acid group in the organic phosphonate solution stabilizes the amide ion in the ammonia water, and the phosphonic acid group in the organic phosphonate can further form a complex complex structure with the metal ion, thereby improving the stability of the complexing agent It can effectively complex nickel, cobalt, manganese metal ions and doped ions, and effectively stabilize nickel cobalt manganese metal ions and doping elements, so that stable nickel cobalt manganese can be formed. Precursor.

Description

technical field [0001] The present application relates to the field of new energy battery precursors, in particular to a method for preparing a nickel-cobalt-manganese ternary material precursor. Background technique [0002] The tap density, size, morphology, particle size and impurity content of the ternary precursor have a direct impact on the technical indicators of the ternary battery material. Due to the poor structural stability of the pure nickel-cobalt-manganese precursor, the method of infiltrating an appropriate amount of Mg, Al plasma can generally improve the electronic conductivity, ionic conductivity, output power density of the battery, and the stability of the ternary material structure, especially is thermal stability. [0003] In the prior art, a certain amount of ammonia water is generally added in the reaction as a complexing agent, but the amount of this complexing agent is difficult to control. When the ammonia water consumption is too much, the compl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/525C01G53/00H01M4/505H01M10/0525
CPCC01G53/006H01M4/505H01M4/525H01M10/0525Y02E60/10
Inventor 张凤学纪东海陈欣朱晶晶
Owner HUBEI BAIJIERUI ADVANCED MATERIALS
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