Carbon nanohorns composite material with microwave absorption and tunable absorption bands and method for preparing the same
AssigneeKunming University of Science and Technology
InventorsFeng Liang, Zhipeng Xie, Da Zhang, Long Ma, Yichang Liu, Junxi Li
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Abstract
The present disclosure relates to a method for production of CNHs composite material. The method includes the following steps: a first step: the silicon particles and graphite powder are mixed for a preset time by planetary ball mill device, and the weight ratio of silicon element to carbon element is 10-40%, then the Si/C precursor is obtained; a second contact step: the Si/C precursor is pressed into a precursor block, then using precursor block to the CNHs composite material by a DC arc plasma device.
Claims11
A method for preparation of carbon nanohorns composite material, the method comprising:
- a. mixing material containing silicon particles and graphite powder with a weight ratio of silicon element to carbon element 10% to 40% by using a planetary ball mill device at a predetermined speed and a first predetermined time to obtain a Si/C precursor;
- b. compressing the Si/C precursor into a first graphite block by a cold isostatic pressing device for a predetermined pressure and a second predetermined time to obtain a precursor block;
- c. putting the precursor block as an anode into a DC arc plasma device, arranging a second graphite rod sharpened at one end as a cathode opposite to the anode, filling the plasma device with preset gas, and then starting the plasma device to synthesis carbon nanohorns composite material.
Carbon nanohorns composite material, wherein the carbon nanohorns composite material is in a core-shell structure with carbon nanohorns as a core and amorphous SiO2 as a shell surrounding the core, a thickness of the shell is 5-30 nm, and a mass ratio of the shell is 6-62%.
Dependencies are inferred from the claim text.