Boron-doped graphene aerogel and preparation method and application thereof

A technology of graphene airgel and boron doping, which is applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of lack of full utilization of the electrochemical performance of graphene airgel, and achieve excellent pure capacitance behavior , Excellent rate performance, long cycle life effect
CN112390249APending Publication Date: 2021-02-23SHAANXI SCI TECH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHAANXI SCI TECH UNIV
Publication Date
2021-02-23

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Abstract

The invention provides boron-doped graphene aerogel and a preparation method and application thereof. The preparation method includes the steps that graphene oxide serves as a carbon source, boric acid serves as a boron source, and graphene dispersion liquid with different concentrations is prepared, and the stable and high-performance boron-doped graphene aerogel is prepared by using a simple one-step hydrothermal synthesis method. The product obtained by hydrothermal reaction has a special three-dimensional porous structure, and the communicated mesopores on the surface of the boron-doped graphene aerogel inhibit the agglomeration phenomenon of the graphene sheet layer, thereby greatly enhancing the specific surface area of the macroscopic graphene material. Meanwhile, the clearly-layered three-dimensional porous structure can improve the ion transmission efficiency, so that the performance of the boron-doped graphene aerogel as a supercapacitor electrode is improved.
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Description

【Technical field】

[0001] The invention belongs to the field of supercapacitors and semiconductor optoelectronic devices, and relates to a boron-doped graphene aerogel and a preparation method and application thereof. 【Background technique】

[0002] Graphene is a new type of two-dimensional material with a thickness of only 0.334nm. It has the characteristics of high thermal conductivity, high electrical conductivity, large specific surface area and easy modification of surface chemistry. Compared with traditional porous carbon materials, graphene has properties including high High electrical conductivity (104~106S / m), large specific surface area (~2675m 2 / g), high Young's modulus (~1TPa) and high fracture strength (~130GPa), graphene is a semi-metal / semiconductor material with zero band gap, which directly leads to the lower switching ratio of graphene And large leakage current, intrinsic graphene has few functional groups and poor compatibility with organic solvents, and ...

Claims

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