Method for preparation of nickel-cobalt-manganese ternary material with aluminum oxide coating layer by taking retired lithium ion battery as raw material
A technology of lithium-ion batteries and ternary materials, applied to electrical components, secondary batteries, battery electrodes, etc., can solve problems such as waste, secondary pollution of aluminum resources, and problems not involving the treatment of aluminum-containing alkali immersion solutions, and achieve High structural stability, strong cycle performance, and the effect of avoiding waste of aluminum resources
Active Publication Date: 2019-07-12
SUNWODA ELECTRONICS
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The invention discloses a method for preparation of a nickel-cobalt-manganese ternary material with an aluminum oxide coating layer by taking a retired lithium ion battery as a raw material. The method comprises the steps of: disassembling a retired lithium ion battery to obtain a cathode material containing nickel, cobalt and manganese elements; mixing the cathode material and an alkali solutionfor alkaline leaching and filtering to obtain an aluminum-containing alkaline leaching solution and a dealuminized cathode material; taking the dealuminized cathode material as a raw material to prepare and obtain a nickel-cobalt-manganese ternary material; mixing the nickel-cobalt-manganese ternary material and the aluminum-containing alkaline leaching solution, and adding an acid solution into the mixed solution for stirring to obtain an aluminum hydroxide and nickel-cobalt-manganese ternary material mixed suspension; and putting the aluminum hydroxide and nickel-cobalt-manganese ternary material mixed suspension in an aerobic environment for calcination to obtain a nickel-cobalt-manganese ternary material with an aluminum oxide coating layer. The method provided by the invention achieves cyclic utilization of the generated aluminum-containing alkaline leaching solution in the process of preparing the nickel-cobalt-manganese ternary material by taking the retired lithium ion batteryas a raw material and achieves the improvement of the structure stability and the cycle performance of the nickel-cobalt-manganese ternary material.
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Property | Measurement | Unit |
Particle size | 200.0 ~ 600.0 | nm |
Particle size | 10.0 ~ 11.0 | µm |
Particle size | 2.0 ~ 4.0 | µm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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