Ni/NiFe2O4 lithium ion battery anode material synthesized by bimetallic MOF precursor and preparation method thereof
A technology for lithium-ion batteries and negative electrode materials, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of poor cycle performance and low conductivity, and achieve the effects of low cost, low equipment requirements, and simple synthesis process
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[0025] Example 1
[0026] (1) Weigh 0.727g nickel nitrate hexahydrate and 1.352g ferric chloride hexahydrate dissolved in 50mL DMF. Stir magnetically for 1h until a uniform and stable solution is formed; then add 0.453g aminoterephthalic acid and 6mL in sequence Sodium hydroxide solution, in which the concentration of sodium hydroxide is 0.4moL / L.
[0027] (2) Then transfer the solution to a high-pressure reactor with a polytetrafluoroethylene liner, and place the reactor at 120°C for 24 hours. After the reaction was completed, it was cooled to room temperature, centrifuged, washed (washed with DMF three times), and dried at 80°C for 12 hours to obtain a brown Ni-Fe-MOFs precursor.
[0028] (3) Place the obtained brown Ni-Fe-MOFs precursor in a muffle furnace, heat up to 500°C at 5°C / min, and heat preservation for 2h, then cool to room temperature, and finally obtain Ni / NiFe 2 O 4 Composite materials.
Example Embodiment
[0029] Example 2
[0030] (1) Weigh 1.454g nickel nitrate hexahydrate and 2.704g ferric chloride hexahydrate dissolved in 50mL DMF. Stir magnetically for 1h until a uniform and stable solution is formed; then add 0.906g aminoterephthalic acid and 12mL sequentially Sodium hydroxide solution, in which the concentration of sodium hydroxide is 0.4moL / L.
[0031] (2) Then transfer the solution to a high-pressure reactor with a polytetrafluoroethylene liner, and place the reactor at 120°C for 24 hours. After the reaction was completed, it was cooled to room temperature, centrifuged, washed (washed with DMF three times), and dried at 80°C for 12 hours to obtain a brown Ni-Fe-MOFs precursor.
[0032] (3) Place the obtained brown Ni-Fe-MOFs precursor in a muffle furnace, heat up to 500°C at 5°C / min, and heat preservation for 2h, then cool to room temperature, and finally obtain Ni / NiFe 2 O 4 Composite materials.
Example Embodiment
[0033] Example 3
[0034] (1) Weigh 0.727g nickel nitrate hexahydrate and 1.352g ferric chloride hexahydrate dissolved in 50mL DMF. Stir magnetically for 1h until a uniform and stable solution is formed; then add 0.453g aminoterephthalic acid and 6mL in sequence Sodium hydroxide solution, in which the concentration of sodium hydroxide is 0.4moL / L.
[0035] (2) Then transfer the solution to a high-pressure reactor with a polytetrafluoroethylene liner, and place the reactor at 120°C for 24 hours. After the reaction was completed, it was cooled to room temperature, centrifuged, washed (washed with DMF three times), and dried at 80°C for 12 hours to obtain a brown Ni-Fe-MOFs precursor.
[0036] (3) Put the obtained brown Ni-Fe-MOFs precursor in a muffle furnace, heat it up to 500°C at 5°C / min, and heat it for 4h, then cool to room temperature, and finally obtain Ni / NiFe 2 O 4 Composite materials.
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