Melamine sponge loaded MnO2 flexible electrode material as well as preparation method and application thereof
A melamine sponge, flexible electrode technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of limiting the wide use of energy storage devices, low electrical conductivity, poor electrical conductivity, etc., and achieve abundant reserves and cycle life. The effect of long, short duty cycles
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[0033] A melamine sponge loaded with MnO 2 The preparation method of flexible electrode material, comprises the following steps:
[0034] S1: Cut into 5×3×3cm 3 Large and small melamine sponges are heated in an inert gas atmosphere to obtain carbonized nitrogen-doped melamine sponge flexible materials, denoted as N-MF;
[0035] S2: mixing and stirring KMnO 4 Prepare the reaction solution with HCl, then put N-MF and the reaction solution into the reaction kettle for hydrothermal reaction;
[0036] S3: After the reaction is completed, the obtained product is washed and dried to obtain the melamine sponge loaded with MnO 2 Flexible electrode material, denoted as N-MF-MnO 2 .
[0037]In step S1, the preferred heating condition is: keep warm at 600-900°C for 2-2.5h; for example, keep warm at 900°C for 2h, or keep warm at 600°C for 2.5h, or keep warm at 700°C for 2h. Preferably the inert gas is nitrogen or argon. The preferred melamine sponge is a white reticular solid with a...
Embodiment 1
[0043] Melamine sponge loaded with MnO 2 Flexible electrode materials and their applications:
[0044] (1) Cut the purchased melamine sponge into about 5×3×3cm 3 The small pieces were washed with deionized water and absolute ethanol, and dried for later use.
[0045] (2) Put the sponge dried in step (1) into the tube furnace, 2 The temperature was raised to 900°C under the atmosphere, and the temperature was kept for 2 hours.
[0046] (3) Collect the sponge material fired in step (2), wash it with deionized water and ethanol respectively, and dry it in an oven at 60°C.
[0047] (4) Take 1mmol KMnO 4 , add 0.5ml HCl, 70ml deionized water and mix and stir for 10min to obtain a solution for later use.
[0048] (5) Put the carbonized melamine sponge material dried in step (3) and the solution in step (4) into a hydrothermal reaction kettle, and perform a hydrothermal reaction in an oven at 90° C. for 1 hour.
[0049] (6) The product in step (5) was taken out, washed with dei...
Embodiment 2
[0057] Compared with Example 1, in this example, the temperature of the tube furnace in (2) is changed from 900° C. to 600° C., and other conditions remain unchanged.
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