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MOFs derivative Co-Ni-B-P composite material and preparation method and application thereof

A technology of co-ni-b-p and composite materials, applied in nanotechnology for materials and surface science, hybrid/electric double layer capacitor manufacturing, hybrid capacitor electrodes, etc. The low utilization rate of metal active sites can achieve the effects of shortening the ion transmission distance, excellent material stability, and green preparation methods

Active Publication Date: 2021-10-22
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, when introducing bimetallic MOFs as composite electrode materials, the technical problem that must be solved is the low utilization rate of the metal active sites between the bimetallic components and the inability to exert the unique Faraday capacitance characteristics of the metal components.

Method used

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  • MOFs derivative Co-Ni-B-P composite material and preparation method and application thereof
  • MOFs derivative Co-Ni-B-P composite material and preparation method and application thereof
  • MOFs derivative Co-Ni-B-P composite material and preparation method and application thereof

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Embodiment 1

[0062] A preparation method of MOFs derivative Co-Ni-B-P, comprising the following steps:

[0063] Step 1) Preparation of Co-Ni-MOF material, weigh 0.5667 g cobalt acetate and 0.5764 g nickel acetate dissolved in 32 ml N,N-dimethylacetamide to form a pink A solution, then weigh 0.562 g 1,2,3,4-butane tetracarboxylic acid is dissolved in 24ml of N,N-dimethylacetamide to form a B solution, and then the B solution is added to the A solution for solvothermal reaction, the temperature of the solvothermal reaction The temperature is 160 ℃, and the solvothermal reaction time is 12 h. After the reaction is completed, the Co-Ni-MOF material, referred to as Co-Ni-MOF, can be obtained by washing and drying;

[0064] In order to prove that the material composition of the Co-Ni-MOF material obtained in step 1 is detected by X-ray diffraction, the results are as follows figure 1 As shown, the peak shape is compared with the diffraction peak of Co-Ni-MOF, and there is a sharper peak, indica...

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Abstract

The invention discloses an MOFs derivative Co-Ni-B-P composite material which is prepared by the following steps of: firstly, preparing Co-Ni-MOF by adopting a solvothermal method to form a flower cluster spherical primary structure; and carrying out boronizing treatment and phosphating treatment by adopting a chemical oxidation-reduction method to respectively form a nanosheet secondary structure and a nanoparticle tertiary structure. The effects of high porosity, material structure protection, material oxygen vacancy increase, specific surface area increase and ion transmission rate increase are achieved, and the effects of rapid Faraday reaction and conductivity improvement and pseudocapacitance providing are further achieved. The preparation method of the Co-Ni-MOF material comprises the following steps of: (1) preparation of a Co-Ni-MOF material; (2) boronizing treatment; and (3) phosphating treatment. The Co-Ni-MOF material is charged and discharged in the range of-0.1 V to 0.45 V when applied as a supercapacitor electrode material. When the discharging current density is 1 A / g, the specific capacitance is 1500 F / g to 1600 F / g. The Co-Ni-MOF material has the excellent material stability performance and the excellent ion transmission capacity.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to the preparation of a MOFs derivative Co-Ni-B-P composite material and its application in the field of supercapacitors. Background technique [0002] With the rapid development of energy-based electronic devices such as portable electronic devices, backup power systems, electric vehicles, etc., energy storage devices have emerged as important secondary energy sources and are essential in all aspects of our daily lives. Among various energy storage devices, supercapacitors are currently at the forefront of this research. As one of the representative modern energy storage devices, supercapacitors have been widely studied due to their unique properties such as high power density, long cycle life, fast charging capability, and safe operation mode. [0003] It is well known that the performance of supercapacitors largely depends on the electrode materials. To date, different ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/26H01G11/30H01G11/46H01G11/02B82Y30/00B82Y40/00
CPCH01G11/86H01G11/46H01G11/30H01G11/26H01G11/02H01G11/24B82Y30/00B82Y40/00Y02E60/13
Inventor 邹勇进眭清丽王庆勇向翠丽方淞文徐芬孙立贤
Owner GUILIN UNIV OF ELECTRONIC TECH
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