Electrode active material for supercapacitor and preparation method, electrode material for supercapacitor, supercapacitor and electric device
An electrode active material and supercapacitor technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve problems such as poor conductivity of single metal sulfides, and achieve rich reaction sites, process stability, and shape. A neat effect
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[0055] As an optional embodiment of the present invention, the electrode active material for a supercapacitor is mainly made of the following raw materials:
[0056] pyridinecarboxylic acid ligand, nickel source, vanadium source, first solvent, sulfur source and second solvent;
[0057] Wherein, the mass ratio of pyridine carboxylic acid ligand, nickel source, vanadium source, first solvent, sulfur source and second solvent is (3-7): (4-8): (1-3): (40- 80): (1-6): (30-80), preferably (4-6.8): (4.5-7): (1.5-2.5): (45-70): (1.5-4): (35- 70).
[0058] Typical but non-limiting mass ratios of pyridine carboxylic acid ligand, nickel source, vanadium source, first solvent, sulfur source and second solvent are 3:4:1:40:1:30, 4:4:1: 40:1:30, 5:4:1:40:1:30, 6:4:1:40:1:30, 3:5:1:40:1:30, 4:6:1:40: 1:30, 5:7:1:40:1:30, 6:8:1:40:1:30, 3:4:2:40:1:30, 4:4:3:40:1: 30. 5:4:2:40:1:30, 6:4:3:40:1:30, 3:4:1:50:1:30, 4:4:1:60:1:30, 5:4:1:70:1:30, 6:4:1:80:1:30, 3:4:1:40:2:30, 4:4:1:40:4:30, 5...
Embodiment 1
[0107] This embodiment provides an electrode active material for a supercapacitor, and the electrode active material for a supercapacitor has a rod-like structure.
[0108] The preparation method of the electrode active material for the supercapacitor comprises the following steps:
[0109] (a) 2,6-pyridinedicarboxylic acid (0.04mol), NH 4 VO 3 (0.02mol), Ni(NO 3 ) 2 ·6H 2 Add O (0.02mol) into the beaker, then add 50mL of deionized water, mix, and stir to make it evenly mixed, place the beaker in a water bath at 80°C and heat it for 30min, after it cools down, seal it with plastic wrap and place it in the refrigerator (0°C Below) for one week, dry the obtained green crystal in an oven at 60°C to obtain a Ni-V-MOF precursor;
[0110] (b) Transfer the Ni-V-MOF precursor to thioacetamide (TAA) ethanol solution (0.04mol, 40mL), and then put it in the reaction kettle for solvothermal reaction, the reaction temperature is 120℃, and the reaction time is 5h, after the reaction i...
Embodiment 2
[0112] This embodiment provides an electrode active material for a supercapacitor, and the electrode active material for a supercapacitor has a rod-like structure.
[0113] The preparation method of the electrode active material for the supercapacitor comprises the following steps:
[0114] (a) 2,6-pyridinedicarboxylic acid (0.02mol), NH 4 VO 3 (0.01mol), Ni(NO 3 ) 2 ·6H 2 Add O (0.01mol) into the beaker, then add 50mL of deionized water, mix, and stir to make it evenly mixed. Place the beaker in a water bath at 80°C and heat it for 30 minutes. This process needs to be stirred with a glass rod all the time. After it cools down, keep it fresh. Seal the film and place it in the refrigerator (below 0°C) for a week, and dry the obtained green crystal in an oven at 50°C to obtain the Ni-V-MOF precursor;
[0115] (b) Transfer the Ni-V-MOF precursor to thioacetamide (TAA) ethanol solution (0.04mol, 40mL), and then put it in the reaction kettle for solvothermal reaction. The reac...
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