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A nico@nis embedded s-doped carbon nanotube composite material and its preparation and application

A technology of composite materials and carbon nanotubes, applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the limitations of large-scale application of reversible air electrode catalysts, the high cost of noble metal catalysts, and the inability to mass Production and general use, etc., to achieve excellent dual-functional catalytic activity, low cost, and low price

Active Publication Date: 2022-06-03
SUZHOU INST OF INDAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the production cost of noble metal catalysts such as platinum is quite high, and the earth's reserves are scarce, so it cannot be mass-produced and widely used
In addition, although this type of catalyst shows good activity for ORR (oxygen reduction reaction), it does not perform well for OER (oxygen evolution reaction)
Therefore, the large-scale application of reversible air electrode catalysts is greatly limited.

Method used

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  • A nico@nis embedded s-doped carbon nanotube composite material and its preparation and application
  • A nico@nis embedded s-doped carbon nanotube composite material and its preparation and application
  • A nico@nis embedded s-doped carbon nanotube composite material and its preparation and application

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Embodiment Construction

[0036] A NiCo@NiS inlaid S-doped carbon nanotube composite material proposed by the present invention and its preparation and application will be further described in detail below with reference to the accompanying drawings and specific examples. The advantages and features of the present invention will become apparent from the following description and claims.

[0037] In this embodiment, refer to figure 1 , a NiCo@NiS-inlaid S-doped carbon nanotube composite was prepared as follows:

[0038] (1) the melamine of 20mmol, the cysteine ​​of 1mmol, the nickel chloride hexahydrate of 0.5mmol and the cobalt chloride hexahydrate of 0.5mmol are mixed, then grind to obtain solid powder;

[0039] (2) calcination in the first stage: the solid powder obtained in step (1) is placed in a muffle furnace, raised to 550° C. with a heating rate of 3° C. / min, and kept for 2 hours;

[0040] (3) calcination in the third stage: the temperature was then raised to 800°C at a heating rate of 5°C / mi...

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Abstract

The invention discloses a NiCo@NiS embedded S-doped carbon nanotube composite material and its preparation and application. The composite material includes NiCo@NiS nanoparticles and S-doped carbon nanotubes, and the NiCo@NiS nanoparticles are embedded in On S-doped carbon nanotubes, the particle size of NiCo@NiS nanoparticles is 11-15nm. The preparation method of the composite material comprises: mixing melamine, cysteine, nickel chloride hexahydrate, and cobalt chloride hexahydrate in a molar ratio of 40:2:1:1, and then grinding to obtain a solid powder; The solid powder is placed in the muffle furnace, and then an inert atmosphere gas is introduced into the muffle furnace, and the temperature of the muffle furnace is raised to 550°C and kept for 2 hours; then the temperature of the muffle furnace is raised to 800°C, and kept 2h, after the temperature cools down, collect again. The composite material is used as an electrocatalyst for dual-function catalysis of oxygen reduction reaction and hydrogen evolution reaction, and has excellent performance.

Description

technical field [0001] The invention belongs to the field of catalyst preparation and its application, in particular to a NiCo@NiS inlaid S-doped carbon nanotube composite material and its preparation and application. Background technique [0002] In recent years, with the consumption of fossil energy, the continuous increase of energy demand and the continuous maturity of environmental friendliness, countries around the world have carried out development and research on relatively clean and sustainable energy replacement devices. great attention. Secondary metal-air batteries have the advantages of simple preparation, excellent safety performance, and environmental friendliness. In terms of economic benefits and environmental protection, zinc-air batteries have been recognized as one of the most effective and reliable new energy technologies in the 21st century. In particular, the theoretical density of zinc-air batteries is much higher than that of traditional lithium-ion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/88B82Y30/00
CPCH01M4/9041H01M4/9083H01M4/90H01M4/8825B82Y30/00Y02E60/50
Inventor 丁倩倩耿哲张杰
Owner SUZHOU INST OF INDAL TECH
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