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Vertical graphene loaded carbon nano tube composite electrode material and preparation method thereof, and application of composite electrode material in all-solid-state zinc-air battery

A carbon nanotube composite, graphene nanosheet technology, applied in fuel cell type half cells and primary cell type half cells, electrical components, battery electrodes, etc., can solve the problems of resource shortage and high cost of precious metals, and achieve higher The effect of conductivity efficiency, good flexibility and broad application prospects

Active Publication Date: 2019-10-18
HARBIN INST OF TECH
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Problems solved by technology

Noble metal catalysts such as rubidium, iridium, and platinum-based catalysts are currently widely considered to be highly efficient ORR and OER catalysts, but noble metals are expensive and resources are scarce, and it has become the research of scientific researchers to find materials that can replace them and have comparable catalytic capabilities. hotspot

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  • Vertical graphene loaded carbon nano tube composite electrode material and preparation method thereof, and application of composite electrode material in all-solid-state zinc-air battery
  • Vertical graphene loaded carbon nano tube composite electrode material and preparation method thereof, and application of composite electrode material in all-solid-state zinc-air battery
  • Vertical graphene loaded carbon nano tube composite electrode material and preparation method thereof, and application of composite electrode material in all-solid-state zinc-air battery

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preparation example Construction

[0035] Such as Figure 1 to Figure 9 As shown, the vertical graphene-loaded carbon nanotube composite electrode material involved in this embodiment and its preparation method and application in all-solid-state zinc-air batteries include:

[0036] A kind of preparation method of vertical graphene supported carbon nanotube composite electrode material, this preparation method is carried out according to the following steps:

[0037] Step 1, using radio frequency plasma enhanced chemical vapor deposition technology to grow vertical graphene nanosheet arrays on carbon cloth;

[0038] Step 2, utilizing the polymerization reaction to grow Zif-67 on the vertical graphene nanosheet array obtained in step 1, to obtain the Zif-67 electrode material supported by vertical graphene;

[0039] Step 3, using chemical vapor deposition technology, under the atmosphere of nitrogen source provided by melamine, hydrogen and argon, carbon nanotubes are grown on the vertical graphene-loaded Zif-67...

Embodiment 1

[0049] Step 1. Using radio frequency plasma enhanced chemical vapor deposition technology to grow vertical graphene nanosheet arrays on carbon cloth. Put the dry and clean carbon cloth into the tube furnace, feed methane and hydrogen, the flow ratio of methane and hydrogen is 1:4sccm, react at 700°C for 90min;

[0050] Step 2. Dissolve 0.144g of cobalt nitrate and 0.324g of dimethylimidazole in 10ml of methanol respectively. After mixing the two solutions, stir them magnetically for 5 minutes until the solution is evenly mixed. Immerse the carbon cloth with vertical graphene vertically and let it stand After 20 hours, take it out, wash it with methanol and deionized water alternately for 3 times, dry it in vacuum at 70°C for 12 hours, and set it aside;

[0051] Step 3, growing carbon nanotubes by chemical vapor deposition technology. Put the Zif-67-supported carbon cloth on vertical graphene into a tube furnace, put 1 g of melamine as a nitrogen source, feed 90 sccm of argon ...

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Abstract

The invention provides a vertical graphene loaded carbon nano tube composite electrode material and a preparation method thereof, and an application of the composite electrode material in an all-solid-state zinc-air battery, and belongs to the technical filed of all-solid-state metal-air battery electrode materials. A vertical graphene nanosheet array is grown on a piece of carbon cloth by utilizing a radio frequency plasma enhanced chemical vapor deposition technology, and then the vertical graphene nanosheet array is immersed into a Zif-67 precursor solution to be soaked for 20h, and then washing and drying are carried out, and calcining is performed by a chemical vapor deposition technology; and under the atmosphere of hydrogen and argon, melamine provides a nitrogen source, and a carbon nano tube grows on the vertical graphene loaded Zif-67 precursor. The prepared material shows excellent catalytic performance in the aspects of ORR and OER, and when the material is used as the negative electrode of the all-solid-state zinc-air battery, excellent electrochemical performance and cycling stability are shown, so that the material has a wide application prospect in the technical field of all-solid-state metal-air battery electrode materials.

Description

technical field [0001] The invention relates to a vertical graphene-supported carbon nanotube composite electrode material, a preparation method thereof and an application in an all-solid zinc-air battery, belonging to the technical field of all-solid metal-air battery electrode materials. Background technique [0002] In recent years, with the development of human society, the contradiction between environment and energy issues has become increasingly prominent. Energy shortage has become the primary factor restricting social development. At the same time, the excessive use of fossil fuels has also brought a load on the environment. Therefore, people will face energy A major change in the field is predictable, and the search for efficient and clean green energy has become a hot research topic for researchers at home and abroad. Currently, efforts are being made to study electrochemical storage and conversion devices. Rechargeable metal-air batteries are considered as one o...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/86H01M4/90H01M4/96H01M12/06B82Y30/00B82Y40/00
CPCH01M4/8825H01M4/8867H01M4/8657H01M4/9083H01M4/9008H01M4/96H01M12/06B82Y30/00B82Y40/00
Inventor 邱云峰张园媛马卓马天戈纪心阳胡平安
Owner HARBIN INST OF TECH
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