Nitrogen-doped rod-shaped titanium oxide/two-dimensional layered titanium carbide nanocomposite electrode material and its preparation and application
A nanocomposite material, two-dimensional layered technology, applied in hybrid/electric double layer capacitor manufacturing, hybrid capacitor electrodes, nanotechnology for materials and surface science, etc., can solve the problem of low nitrogen doping content, achieve High specific capacity, good rate performance and cycle stability, simple preparation process
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Embodiment 1
[0020] In the nitrogen-doped rod-shaped titanium oxide / two-dimensional layered titanium carbide nanocomposite electrode material of this embodiment, rod-shaped titanium oxide is distributed on the surface of the sheet and between the sheets, and its nitrogen content accounts for 33.48% of the total atomic percentage.
[0021] The preparation method of nitrogen-doped rod-shaped titanium oxide / two-dimensional layered titanium carbide nanocomposite electrode material comprises the following steps:
[0022] Step 1, take Ti 3 C 2 50mg of powder and 50mL of urea aqueous solution were stirred and mixed for 0.5h, and the mass ratio of urea:water in the urea aqueous solution was 1:0.5;
[0023] Step 2, put the solution obtained in step 1 into a hydrothermal kettle, and hydrothermally heat it at 180 ° C for 12 h, then wash the reacted powder with deionized water and absolute ethanol for several times, and then put it into a vacuum of 40 ° C. After drying in an oven, an active material...
Embodiment 2
[0032] In the nitrogen-doped rod-shaped titanium oxide / two-dimensional layered titanium carbide nanocomposite electrode material of this embodiment, rod-shaped titanium oxide is distributed on the surface and between the sheets, and its nitrogen content accounts for about 25% of the total atomic percentage.
[0033] The preparation method of nitrogen-doped rod-shaped titanium oxide / two-dimensional layered titanium carbide nanocomposite electrode material comprises the following steps:
[0034] Step 1, take Ti 3 C 2 50 mg of powder and 50 mL of urea aqueous solution were stirred and mixed for 2 hours, and the mass ratio of urea:water in the urea aqueous solution was 1:1;
[0035] Step 2, put the solution obtained in step 1 into a hydrothermal kettle, and hydrothermally heat it at 160 ° C for 12 h, then wash the reacted powder with deionized water and absolute ethanol for several times, and then put it into a vacuum of 40 ° C. After drying in an oven, an active material—a nitr...
Embodiment 3
[0041] In the nitrogen-doped rod-shaped titanium oxide / two-dimensional layered titanium carbide nanocomposite electrode material of this embodiment, rod-shaped titanium oxide is distributed on the surface of the lamellae and between the lamellae, and its nitrogen content accounts for 22% of the total atomic percentage.
[0042] The preparation method of nitrogen-doped rod-shaped titanium oxide / two-dimensional layered titanium carbide nanocomposite electrode material comprises the following steps:
[0043] Step 1, take Ti 3 C 2 50 mg of powder and 50 mL of urea aqueous solution were stirred and mixed for 4 hours, and the mass ratio of urea:water in the urea aqueous solution was 1:2;
[0044] In step 2, the solution obtained in step 1 is put into a hydrothermal kettle, hydrothermally heated at 200 ° C for 12 h, and then the reacted powder is washed several times with deionized water and absolute ethanol, and then placed in a vacuum of 40 ° C. After drying in an oven, an active...
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