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Composite electrode material and preparation method and application thereof

A composite electrode and mixed solution technology, which is applied in hybrid capacitor electrodes, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as poor conductivity, increase active sites, improve electrochemical performance, Facilitated Diffusion Effect

Inactive Publication Date: 2018-11-13
ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor conductivity of individual MOFs materials, MOFs are currently mainly used as electrode materials for supercapacitors in the form of porous carbon and porous metal oxide materials or precursors.

Method used

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  • Composite electrode material and preparation method and application thereof
  • Composite electrode material and preparation method and application thereof
  • Composite electrode material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Ni-MOFs@NiS x Preparation of materials:

[0034] A solution: nickel chloride hexahydrate (1.43g, 6mmol), trimesic acid (H 3 BTC) (0.42g, 2mmol), dissolved in 20mL of a mixture of N,N-dimethylformamide (DMF) and deionized water at a volume ratio of 1:1, marked as A after thorough stirring.

[0035] Liquid B: Weigh thioacetamide (1.8 g, 24 mmol) and dissolve it in 20 mL of deionized water, stir well and mark it as liquid B.

[0036] Take 15mL each of liquid A and liquid B into a beaker, stir evenly, transfer to a 50mL polytetrafluoroethylene-lined stainless steel autoclave, keep at 180°C for 24h, cool naturally to room temperature, and then pump with distilled water After filtration and washing, vacuum drying at 60 °C for 12 h yielded Ni-MOFs@NiS x powder.

[0037]Preparation of the working electrode: The active material sample (Ni-MOFs@NiSx material) prepared by the above method, conductive carbon black (super-Li), and binder (PVDF) were mixed in a mass ratio of 8:1:...

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Abstract

The invention relates to a preparation method of a composite electrode material. The preparation method comprises the following steps of enabling a metal source and an organic ligand to be dissolved into a mixed solution of an organic solvent and water to prepare a mixed solution A; dissolving a sulfur source into water to prepare a mixed solution B; mixing the mixed solution A with the mixed solution B, keeping the temperature for 20-24 hours at 160-180 DEG C, then performing cooling, washing and drying to prepare the composite electrode material. The composite electrode material is preparedby adopting a hydrothermal method, the process is simple, the cost is low, the environment is protected, and the method is suitable for mass production. The composite electrode material prepared by the preparation method disclosed by the invention is prepared by a one-step hydrothermal method to prepare a fine nano structure embedded with sulfide on the metal organic framework, so that the specific surface area of the material is greatly enlarged, and the active sites of the redox reaction of the active material are increased, thereby improving the electrochemical performance of the material essentially.

Description

technical field [0001] The invention specifically relates to a composite electrode material and its preparation method and application. Background technique [0002] In recent years, the rapid development of nanoscience and technology has provided an opportunity for the development of new supercapacitor electrode materials. Metal-organic frameworks (MOFs) are crystalline materials with a regularly arranged network structure formed by self-assembly of macromolecular organic ligands and inorganic metal ions. Advantages of the compound. In recent years, taking advantage of the characteristics of low density, high specific surface area, designable structure and function, and adjustable pore size, MOFs have been used as a new electrode material in lithium batteries, fuel cells, and supercapacitors. The structure and morphology of nanomaterials have a great influence on the capacitance behavior, such as specific surface area and microscopic morphology are two of the most importa...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01G11/24H01G11/30Y02E60/13
Inventor 尤春琴甘朝伦王峰徐凯辰
Owner ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD