Porous carbon nanorod array electrode and preparation method thereof

Abstract

The invention discloses a porous carbon nanorod array electrode and a preparation method thereof. A zinc oxide nanowire array is used as a template, hydrocarbon gas is used as a carbon source, and an in-situ CVD method is used for manufacturing a carbon nanorod array. The surface of the carbon nanorod array is of a porous structure, the array length is 2.5-4 microns, and the diameter of the array is 50-200 nm. The carbon nanorod array is of a one-dimensional array structure so as to be beneficial to transmitting charges, the surface of the carbon nanorod array is of the porous structure, the large specific surface area is achieved, and the carbon nanorod array electrode can be used as a supercapacitor electrode.

Description

technical field

[0001] The invention relates to the field of supercapacitors, in particular to a carbon nanorod array electrode with a porous surface and a preparation method thereof. Background technique

[0002] Supercapacitor is a new type of green energy storage device. Due to its high power density and long cycle life, it plays an important role in transportation, mobile communication, aerospace and other fields. However, the lower energy density compared with Li-ion batteries limits their large-scale use. According to the energy density calculation formula E=0.5CV 2 , the energy density can be improved by increasing the specific capacitance and working voltage of the capacitor. Among them, the specific capacitance is closely related to the electrode material used. Among all kinds of electrode materials, carbon materials are particularly valued due to their good electrical conductivity, wide range of sources, safety and non-toxicity. And activated carbon, carb...

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