A kind of metal organic framework material and its preparation method and application
A metal-organic framework and cathode material technology, applied in the field of metal-organic framework materials and their preparation, can solve the problems of complex process and long process flow, and achieve the effects of simple operation, low cost and short process flow
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Embodiment 1
[0042] (1) Separate the positive electrode from the waste NMC811 lithium ion battery, and remove the current collector from the positive electrode by mechanical methods to obtain the positive electrode material of the waste lithium ion battery (the microscopic morphology is as follows: Image 6 shown).
[0043] (2) Weigh the waste lithium-ion battery positive electrode material (active material is LiNi) obtained in step (1) 0.8 Co 0.1 Mn 0.1 O 2 , the conductive agent is conductive carbon black super-P, the binder is PVDF) 500mg, the organic ligand terephthalic acid 1200mg, mixed with N,N-dimethylformamide 75mL and water 25mL to obtain a mixed solution. The mixed solution was placed in a sealed reaction kettle and reacted at 120°C for 48 hours to obtain a reaction product. After cooling to room temperature, the product was taken out from the reaction kettle, the supernatant liquid was poured out, and the lower layer product was poured into a centrifuge tube for centrifugati...
Embodiment 2
[0045] (1) Separate the positive electrode from the waste NMC111 lithium ion battery, and remove the current collector from the positive electrode by mechanical methods to obtain the positive electrode material of the waste lithium ion battery (the microscopic morphology is as follows: Figure 7 shown).
[0046] (2) Weigh the waste lithium-ion battery positive electrode material (active material is LiNi) obtained in step (1) 1 / 3 Co 1 / 3 Mn 1 / 3 O 2 , the conductive agent is conductive carbon black super-P, the binder is PVDF) 500mg, the organic ligand terephthalic acid 1200mg, mixed with N,N-dimethylformamide 75mL and water 25mL to obtain a mixed solution. The mixed solution was placed in a sealed reaction kettle and reacted at 120°C for 48 hours to obtain a reaction product. After cooling to room temperature, the product was taken out from the reaction kettle, the supernatant liquid was poured out, and the lower layer product was poured into a centrifuge tube for centrifug...
Embodiment 3
[0048] (1) The waste LiCoO 2 The positive electrode is separated from the lithium ion battery, and the positive electrode is mechanically removed from the current collector to obtain the positive electrode material of the waste lithium ion battery.
[0049] (2) Weigh the waste lithium-ion battery positive electrode material (active material is LiCoO) obtained in step (1) 2 , the conductive agent is CNT, the binder is PVDF) 500mg, the organic ligand trimesic acid 1200mg, mixed with acetonitrile 75mL, water 25mL to obtain a mixed solution, the mixed solution was placed in a sealed reactor, at 120 ℃ The reaction was carried out for 48h at the temperature to obtain the reaction product. After cooling to room temperature, the product was taken out from the reactor, the supernatant liquid was poured out, and the lower layer product was poured into a centrifuge tube for centrifugation; times), after centrifugation, the supernatant was poured off, and finally dried at 80 °C for 8 hours...
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