A nitrogen-doped flower-shaped carbon nanomaterial with through-type mesopores and its preparation method

A technology of carbon nanomaterials and nanocomposite materials, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, can solve problems such as mesopore blockage, achieve easy operation, easy template, high specific surface area Effect

Active Publication Date: 2020-11-06
SHANGHAI JIAOTONG UNIV
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Problems solved by technology

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to synthesize a nitrogen-doped carbon nanomaterial that is not easily blocked by mesopores, has high reduction catalytic performance, and its synthesis method is simple, the template is easy to remove, and it is environmentally friendly. , easy for industrial application

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  • A nitrogen-doped flower-shaped carbon nanomaterial with through-type mesopores and its preparation method
  • A nitrogen-doped flower-shaped carbon nanomaterial with through-type mesopores and its preparation method
  • A nitrogen-doped flower-shaped carbon nanomaterial with through-type mesopores and its preparation method

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[0028] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

[0029] Unless defined otherwise, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.

[0030] In order to implement the present invention, a flower-type nitrogen-doped carbon material with a penetrating mesoporous structure is synthesized based on a double-template method. Using Ni 2+ -Mn 3+ Derived layered double-layer metal hydroxide (LDH) nanoflowers as self-sacrificing templates and spheri...

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Abstract

The invention relates to the field of catalytic oxygen reduction materials applied to fuel cells and discloses a nitrogen-doped pattern type carbon nanomaterial with a penetrating mesopore. The microstructure of the material is of a nanoflower, and the penetrating mesopore is formed in the nanoflower. The invention further discloses a preparation method of the carbon nanomaterial with the penetrating mesopore. The preparation method comprises the steps of carrying out polymerization reaction by taking an Ni<2+>-Mn<3+> derived lamellar double-layer metal hydroxide nanoflower as a self-sacrificing template, a spherical micelle formed by PS-b-PEO through assembling in a solution as a mesoporous soft template as well as m-phenylenediamine as a carbon precursor so as to obtain a pattern type carbon nanomaterial, cleaning, drying, and carrying out atmosphere calcining. The nitrogen-doped pattern type carbon nanomaterial with the penetrating mesopore is of a three-dimensional structure, has ahigh material specific surface area and high oxygen reduction catalytic performance, the mass transfer efficiency can be improved, the mesopore is unlikely to be blocked, the material performance canbe maintained, and the carbon nanomaterial is easily prepared by virtue of the preparation method.

Description

technical field [0001] The invention relates to the field of materials used in fuel cells to catalyze oxygen reduction reactions, in particular to a nitrogen-doped flower-shaped carbon nanomaterial with through-type mesopores and a preparation method thereof. Background technique [0002] In recent years, fuel cells, as a clean, efficient and sustainable new energy system, have become one of the effective ways to solve the global energy crisis and environmental pollution problems. In fuel cells, the oxygen reduction reaction (oxygen reduction reaction, ORR) is one of the key steps, and currently mainly relies on the expensive metal catalyst platinum. However, due to its high price, limited resources, and poor durability, large-scale industrial production is limited. Therefore, the development of inexpensive non-metallic oxygen reduction catalysts is of great significance for reducing catalyst costs and promoting large-scale industrialization of fuel cells. [0003] The exis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/9091Y02E60/50
Inventor 麦亦勇张嘉程田豪郭彬斌王政侯丹徐富贵李倩智侃茹王楠张鹏飞
Owner SHANGHAI JIAOTONG UNIV
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