Three-dimensional graded carbon-clad NaTi<2>(PO<4>)<3>/C micrometer flower electrode material and preparation method and application thereof
A carbon-coated, micro-flower technology, applied in the fields of nanomaterials and electrochemistry, to achieve the effect of expanding production, strong feasibility and high safety factor
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[0040] Example 1
[0041] Three-dimensional graded carbon coated NaTi 2 (PO 4 ) 3 / C The preparation method of micron flower, it includes the following steps:
[0042] 1) Add 2mmol of tetra-n-butyl titanate dropwise to 20mL ethylene glycol solution and stir for 30 minutes to obtain a colorless and transparent solution;
[0043] 2) Weigh 1mmol of NaH 2 PO 4 ·2H 2 O was dissolved in 10 mL of deionized water, and added dropwise to the solution obtained in step 1) and stirred evenly;
[0044] 3) Measure 2mmol of 85% phosphoric acid (H 3 PO 4 ) Solution, drop it dropwise into the mixed solution obtained in step 2), and stir evenly;
[0045] 4) Weigh 1mmol of glucose as a carbon source and dissolve it in 10mL of deionized water, and then add it dropwise to the mixed solution obtained in step 3) and continue to stir for 1 hour to obtain a colorless and transparent solution;
[0046] 5) Transfer the mixed solution obtained in step 4) to a 50mL reactor, react at 180°C for 12 hours under hydrother...
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[0052] Example 2
[0053] 1) Add 1 mmol of tetra-n-butyl titanate dropwise to 30 mL of ethylene glycol solution and stir for 30 minutes to obtain a colorless and transparent solution;
[0054] 2) Weigh 0.5mmol of NaH 2 PO 4 ·2H 2 O was dissolved in 5 mL of deionized water, and added dropwise to the solution obtained in step 1) and stirred evenly;
[0055] 3) Measure 1mmol of 85% phosphoric acid (H 3 PO 4 ) Solution, drop it dropwise into the mixed solution obtained in step 2), and stir evenly;
[0056] 4) Weigh 0.5 mmol glucose as a carbon source, dissolve it in 5 mL deionized water, and then add it dropwise to the mixed solution obtained in step 3) and continue to stir for 2 hours to obtain a colorless and transparent solution;
[0057] 5) Transfer the mixed solution obtained in step 4) to a 50mL reactor, react at 140°C for 24 hours under hydrothermal conditions, then cool to room temperature naturally, and place the collected product in an oven at 120°C for direct drying to obtain a p...
Example Embodiment
[0061] Example 3
[0062] 1) Add 4 mmol of tetra-n-butyl titanate dropwise to 40 mL of ethylene glycol solution and stir for 30 minutes to obtain a colorless and transparent solution;
[0063] 2) Weigh 2mmol of NaH 2 PO 4 ·2H 2 O was dissolved in 10 mL of deionized water, and added dropwise to the solution obtained in step 1) and stirred evenly;
[0064] 3) Measure 4mmol of 85% phosphoric acid (H 3 PO 4 ) Solution, drop it dropwise into the mixed solution obtained in step 2), and stir evenly;
[0065] 4) Weigh 3mmol glucose as a carbon source, dissolve it in 5mL deionized water, and then add it dropwise to the mixed solution obtained in step 3) and continue to stir for 4 hours to obtain a colorless and transparent solution;
[0066] 5) Transfer the mixed solution obtained in step 4) to a 50mL reaction kettle, react for 15 hours under hydrothermal conditions at 160°C, then cool to room temperature naturally, and place the collected product in an oven at 120°C for direct drying to obtain ...
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