A porous ferrous sulfide nanowire and nitrogen-doped carbon composite material and its preparation method and application
A ferrous sulfide, nitrogen-doped carbon technology, applied in the fields of nanomaterials and electrochemistry, can solve the problems of structural instability, high rate and long life limitations, and achieve low equipment requirements, high energy density, excellent capacity and high Effect of magnification feature
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Embodiment 1
[0031] The preparation method of porous ferrous sulfide nanowire and nitrogen-doped carbon composite material, it comprises the steps:
[0032] 1) Dissolve 1 mmol of ferrous sulfate heptahydrate in 25 ml of deionized water, and stir magnetically at room temperature until completely dissolved;
[0033] 2) Add 2 mmol of thioacetamide to the solution obtained in step 1), and stir magnetically at room temperature until completely dissolved;
[0034] 3) Add 5ml of ethylene glycol to the solution obtained in step 2), and stir at room temperature for 5 minutes;
[0035] 4) Add 5ml of ethylenediamine to the solution obtained in step 3), and stir at room temperature for 40 minutes;
[0036] 5) Transfer the solution obtained in step 4) into a 50mL reaction kettle, conduct a hydrothermal reaction at 180°C for 24 hours, take out the reaction kettle, and naturally cool to room temperature;
[0037] 6) The product obtained in step 5) is centrifuged, washed three times with deionized water...
Embodiment 2
[0042] 1) Dissolve 1 mmol of ferrous sulfate heptahydrate in 25 ml of deionized water, and stir magnetically at room temperature until completely dissolved;
[0043] 2) Add 2 mmol of thioacetamide to the solution obtained in step 1), and stir magnetically at room temperature until completely dissolved;
[0044] 3) Add 5ml of ethylene glycol to the solution obtained in step 2), and stir at room temperature for 2 minutes;
[0045] 4) Add 5ml of ethylenediamine to the solution obtained in step 3), and stir at room temperature for 50 minutes;
[0046] 5) Transfer the solution obtained in step 4) into a 50mL reaction kettle, conduct a hydrothermal reaction at 160°C for 24 hours, take out the reaction kettle, and naturally cool to room temperature;
[0047] 6) The product obtained in step 5) is centrifuged, washed three times with deionized water and absolute ethanol, and dried in an oven at 60-80°C to obtain the ferrous sulfide nanowire material precursor;
[0048] 7) The precurs...
Embodiment 3
[0051] 1) Dissolve 1 mmol of ferrous sulfate heptahydrate in 25 ml of deionized water, and stir magnetically at room temperature until completely dissolved;
[0052] 2) Add 2 mmol of thioacetamide to the solution obtained in step 1), and stir magnetically at room temperature until completely dissolved;
[0053] 3) Add 5ml of ethylene glycol to the solution obtained in step 2), and stir at room temperature for 5 minutes;
[0054] 4) Add 5ml of ethylenediamine to the solution obtained in step 3), and stir at room temperature for 45 minutes;
[0055] 5) Transfer the solution obtained in step 4) into a 50mL reaction kettle, and conduct a hydrothermal reaction at 200°C for 16 hours, take out the reaction kettle, and cool it down to room temperature naturally;
[0056] 6) The product obtained in step 5) is centrifuged, washed three times with deionized water and absolute ethanol, and dried in an oven at 60-80°C to obtain the ferrous sulfide nanowire material precursor;
[0057] 7)...
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