A NCM ternary cathode material with hierarchical structure
A cathode material and hierarchical structure technology, applied in the field of nickel-cobalt-manganese ternary cathode materials, can solve the problems of waste, phase separation, and unfavorable material commercialization.
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Embodiment 1
[0075] Step (1): Weigh NiSO according to the molar ratio Ni:Co:Mn=8:1:1 4 ·6H 2 O. CoSO 4 ·7H 2 O and MnSO 4 ·H 2 O, use 100mL deionized water to make the total concentration of transition metal ions is 2mol L -1 mixed metal salt solution, and then use 200mL deionized water to prepare NaOH and ammonia water at a molar ratio of 1:1 to make the NaOH concentration 2mol L -1 mixed alkaline solution.
[0076] Step (2): Add 50mL deionized water to the continuous stirred tank reactor as the reaction base liquid, and add Ni which accounts for 5% of the total molar weight of the metal salt in the mixed metal salt solution. 0.90 co 0.06 mn 0.04 (OH) 2 As a nucleating agent, add ammonia water dropwise after stirring for 10 minutes, adjust the pH of the reaction base solution to about 11, pass in argon as a protective gas, set the stirring speed at 500r / min, and set the reaction temperature at 55°C. Slowly pump the metal salt solution and the mixed alkali solution into the react...
Embodiment 2
[0089] Step (1): Weigh NiSO according to the molar ratio Ni:Co:Mn=8:1:1 4 ·6H 2 O. CoSO 4 ·7H 2 O and MnSO 4 ·H 2 O, use 100mL deionized water to make the total concentration of transition metal ions is 2mol L -1mixed metal salt solution, and then use 200mL deionized water to prepare NaOH and ammonia water at a molar ratio of 1:1 to make the NaOH concentration 2mol L -1 mixed alkaline solution.
[0090] Step (2): Add 50mL deionized water to the continuous stirred tank reactor as the reaction base liquid, add Ni which accounts for 10% of the total molar weight of the metal salt in the mixed metal salt solution 0.90 co 0.06 mn 0.04 (OH) 2 As a nucleating agent, add ammonia water dropwise after stirring for 10 minutes, adjust the pH of the reaction base solution to about 11, pass in argon as a protective gas, set the stirring speed at 500r / min, and set the reaction temperature at 55°C. Slowly pump the metal salt solution and the mixed alkali solution into the reaction k...
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