A kind of preparation method and electrode of nh2-rgo/cnt/α-mno2nws composite thin film electrode material
An electrode material and a composite film technology, applied in the field of energy material storage technology, can solve the problems affecting the energy storage performance of the composite film electrode, the poor performance improvement effect of the film electrode, the poor performance of the composite film electrode material, and the like, and achieve performance improvement. , to promote rapid diffusion, to achieve the effect of preparation
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Embodiment 1
[0045] This embodiment discloses a NH 2 -rGO / CNT / α-MnO 2 NWs composite thin film electrode, the electrode material of the composite thin film electrode has the following components: NH 2 -rGO, CNT, α-MnO 2 NWs, NH 2 -rGO, CNT, α-MnO 2 The NWs made the electrode material according to the ratio of 10-20ml:10-20ml:50ml.
[0046] Please refer to 1, the preparation method of the electrode material includes the following steps.
[0047] (1) Provide a graphene oxide aqueous dispersion with a concentration of 0.1 to 1.0 g / L and a CNT dispersion of 0.1 to 1 g / L, and the CNTs are hydroxylated carbon nanotubes obtained by using ordinary commercial multi-walled carbon nanotubes through strong acid activation treatment. tube, CNTs in concentrated HNO 3 Activated by reflux.
[0048] Graphene oxide can be prepared by Hummers method.
[0049] The graphene oxide aqueous dispersion can be prepared by the following steps: washing graphene oxide with 1:1 ethanol and deionized water, wa...
Embodiment 2
[0069] This embodiment provides an NH 2 -rGO / CNT / α-MnO 2 The preparation method of the NWs composite thin film electrode material is basically similar to the preparation method of the composite thin film electrode material introduced in the first embodiment, except that 20 ml of NH is taken in step (6) of this embodiment. 2 -rGO aqueous dispersion was sonicated for 20 minutes and added dropwise to 50 ml of α-MnO 2 The NWs aqueous dispersion was mixed and stirred for 6 hours to obtain a uniform dispersion. The uniform dispersion was placed in a vacuum filter for processing. At room temperature, the obtained sample was dried on a filter membrane to obtain NH 2 -rGO / α-MnO 2 NWs composite thin film electrode, the filter membrane used for vacuum filtration is an organic filter membrane with a pore size of 0.22 μm.
[0070] The electrode material of the composite thin film electrode has the following components: NH 2 -rGO, α-MnO 2 NWs, NH 2 -rGO, α-MnO 2 The NWs made the...
Embodiment 3
[0072] This embodiment provides an NH 2 -rGO / CNT / α-MnO 2 The preparation method of NWs composite thin film electrode material is similar to the first embodiment, the difference is that in step (6) of this embodiment, 20 ml of CNT aqueous dispersion is ultrasonicated for 20 minutes, and added dropwise to 50 ml of α-MnO 2 The NWs aqueous dispersion was mixed and stirred for 6 hours to obtain a uniform dispersion. The uniform dispersion was placed in a vacuum filter for processing. At room temperature, the obtained samples were dried on the filter membrane to obtain CNT / α. -MnO 2 NWs composite thin film electrode, the filter membrane used for vacuum filtration is an organic filter membrane with a pore size of 0.22 μm.
[0073] The electrode material of the composite thin film electrode has the following components: CNT, α-MnO 2 NWs, CNTs, α-MnO 2 The NWs made the electrode material in a ratio of 20ml:50ml.
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