Preparation method, product and application of lithium-rich lithium nickel cobalt manganate battery positive electrode material
A lithium cobalt manganese oxide and battery positive electrode technology, which is applied in the field of lithium-rich nickel cobalt manganese lithium manganese oxide battery positive electrode material preparation, can solve the problems of insufficient cycle and rate performance, low ion conductivity, and use restrictions, so as to improve electrochemical performance , easy to operate, repeatable effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0023] Dissolve 10 mmol of manganese acetate, nickel acetate and cobalt acetate in deionized water, then add ammonium bicarbonate solution to the solution to adjust its pH to 8.5; place the mixed solution in a reaction kettle at a temperature of 70°C The product was stirred for 8 hours under certain conditions, and the product was filtered, washed and dried; the product obtained in (2) was mixed with lithium titanate according to the material ratio of 1:1.56, and calcined in an oxygen atmosphere, first calcined at 500 ° C for 5 Hours, and then calcined at 900°C for 17 hours at a heating rate of 5°C / min to obtain a lithium-rich material; disperse aluminum powder with a specific gravity of 2% in acetone, stir evenly, and then the lithium-rich material obtained in step (3) The material is added to the acetone solution dispersed with aluminum powder, heated and stirred in a vacuum environment until it reaches a gel state; the product of step (4) is transferred to a tube furnace, he...
Embodiment 2
[0026] Dissolve 20 mmol of manganese sulfate, nickel sulfate and cobalt sulfate in deionized water, then add ammonium bicarbonate solution to the solution to adjust its pH to 8.5; place the mixed solution in a reaction kettle at a temperature of 80°C The product was stirred for 9 hours under certain conditions, and the product was filtered, washed and dried; the product obtained in (2) was mixed with lithium titanate at a ratio of 1:1.4, and calcined in an oxygen atmosphere, and calcined at 500°C for 6 Hours, and then calcined at 900°C for 16 hours at a heating rate of 5°C / min to obtain a lithium-rich material; disperse aluminum powder with a specific gravity of 2% in acetone, stir evenly, and then the lithium-rich material obtained in step (3) The material is added to the acetone solution dispersed with aluminum powder, heated and stirred in a vacuum environment until it reaches a gel state; the product of step (4) is transferred to a tube furnace, heat-treated in a nitrogen a...
Embodiment 3
[0028] Dissolve 15 mmol of manganese acetate, nickel acetate and cobalt acetate in deionized water, then add ammonium bicarbonate solution to the solution to adjust its pH to 8.5; place the mixed solution in a reaction kettle at a temperature of 90°C The product was stirred for 10 hours under certain conditions, and the product was filtered, washed and dried; the product obtained in (2) was mixed with lithium titanate at a ratio of 1:1.3, and calcined in an oxygen atmosphere, and calcined at 500°C for 7 hours, and then calcined at 900°C for 15 hours at a heating rate of 5°C / min to obtain a lithium-rich material; disperse aluminum powder with a specific gravity of 2% in acetone, stir evenly, and then the lithium-rich material obtained in step (3) The material is added to the acetone solution dispersed with aluminum powder, heated and stirred in a vacuum environment until it reaches a gel state; the product of step (4) is transferred to a tube furnace, heat-treated in a nitrogen ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More