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Preparation method for Cu-Co-S-MOF nanosheet and application thereof

A cu-co-s-mof, nanosheet technology, applied in the fields of electrochemistry and nanomaterials, can solve the problems of low special capacity and rate performance, inability to implement industrial application, limited capacitance performance, etc., and achieve good redox performance, The effect of low cost and improved electrochemical performance

Active Publication Date: 2019-11-08
SHANGHAI INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Electrodes prepared by traditional slurry coating techniques have two disadvantages: on the one hand, the surface area is small, resulting in limited capacitive performance; on the other hand, the binder used can reduce the conductivity
In recent years, a small number of MOFs have been reported as electrode materials for SCs, but their special capacity and rate performance are relatively low, and industrial applications cannot be implemented because the preparation methods are only suitable for laboratory models.

Method used

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  • Preparation method for Cu-Co-S-MOF nanosheet and application thereof
  • Preparation method for Cu-Co-S-MOF nanosheet and application thereof
  • Preparation method for Cu-Co-S-MOF nanosheet and application thereof

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Embodiment 1

[0028] First, a cobalt-based metal-organic framework (Co-MOF) was grown on nickel foam (1 cm×1 cm) by a solution method: 0.05 M cobalt nitrate hexahydrate was dissolved in 40 ml of deionized water, which was called solution A. 0.4M 2-methylimidazole was dissolved in 40ml of deionized water, called solution B. Solution A and solution B were mixed and stirred rapidly, and then put into clean nickel foam to react for 4 hours at room temperature. After the reaction, the nickel foam with Co-MOF was rinsed with ethanol and deionized water, and dried in a drying oven at 60 °C.

[0029] Secondly, 0.5mmol copper nitrate hexahydrate and 1mmol cobalt nitrate hexahydrate were dissolved in 5ml isopropanol, and mixed solution C was obtained after they were completely dissolved, and 120 μl carbon disulfide and 1ml pentamethyldiethylenetriamine (PMDTA) were added to obtain Mix solution D, and immerse the nickel foam with Co-MOF in the mixed solution D, and then quickly transfer it to a polyt...

Embodiment 2

[0032] The cleaned nickel foam was prepared for use in the following experiments (the clean nickel foam was selected as the substrate here, and the nickel foam with Co-MOF was used as the substrate in Example 1). Dissolve 0.5mmol of copper nitrate hexahydrate and 1mmol of cobalt nitrate hexahydrate in 5ml of isopropanol, after they are completely dissolved, add 120μl of carbon disulfide and 1ml of pentamethyldiethylenetriamine (PMDTA), and put the clean foam Nickel was immersed in the solution, and then it was quickly transferred to a polytetrafluoroethylene hydrothermal kettle for solvothermal reaction at 150°C for 8h. After the reaction is completed and cooled to room temperature, the CuCo 2 S 4 The foamed nickel was taken out, washed three times with deionized water and ethanol in turn, and then placed in a vacuum drying oven at 60°C for 12h.

[0033] The Chenhua CHI760e electrochemical workstation adopts cyclic voltammetry and constant current charge and discharge method...

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Abstract

The invention relates to a preparation method for a Cu-Co-S-MOF nanosheet, which comprises the following steps: S1, cobalt nitrate hexahydrate is dissolved in deionized water to obtain a solution A, 2-methylimidazole is dissolved in deionized water to obtain a solution B, the solution A and the solution B are mixed, clean foamed nickel is then added for reaction, and foamed nickel with Co-MOF is obtained; S2, copper nitrate hexahydrate and the cobalt nitrate hexahydrate are dissolved in isopropanol, a mixed solution C is obtained after dissolution, and carbon disulfide and pentamethyldiethylenetriamine are added to the mixed solution C, and a mixed solution D is obtained; and S3, the foamed nickel with Co-MOF is added to the mixed solution D and is transferred to a reactor for a hydrothermal reaction, and after the reaction, the Cu-Co-S-MOF nanosheet is obtained. Compared with the prior art, the preparation method is environmentally-friendly, the preparation method is simple, large-scale production is facilitated, the obtained Cu-Co-S-MOF nanosheet can be applied to an electrode material, and excellent electrochemical performance can be obtained.

Description

technical field [0001] The invention relates to the technical fields of electrochemistry and nanometer materials, in particular to a preparation method and application of Cu-Co-S-MOF nanosheets. Background technique [0002] The increasing consumption of fossil fuels and the emission of greenhouse gases have a very large impact on the environment, leading to a growing global demand for sustainable energy supplies. However, sustainable energy alone is not enough. Today's world urgently needs to explore an efficient, stable and environmentally friendly energy storage device to improve energy storage efficiency. As an energy storage device with high power density, long cycle life, low cost and fast charge and discharge time, supercapacitor (SC) has received extensive attention, so the development and utilization of renewable clean energy has become more and more important . [0003] Electrodes prepared by conventional slurry coating techniques have two disadvantages: on the o...

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 蒋继波孙瑶馨陈宇凯王露露胡晓敏丛海山刘凤茹高丽常宾康佳玲唐佳斌
Owner SHANGHAI INSTITUTE OF TECHNOLOGY
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