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Electrodeposition MOF-derived HKUST-1-LDH super capacitor electrode material and preparation method thereof

A HKUST-1-LDH, HKUST-1 technology, applied in the field of HKUST-1-LDH supercapacitor electrode materials and their preparation, can solve the problems of low conductivity, poor cycle performance, hinder the development of electrode materials, etc., and achieve large BET Specific surface area, mild conditions, simple and efficient preparation method

Active Publication Date: 2021-08-27
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low electrical conductivity and poor cycle performance of LDHs hinder their development as electrode materials.

Method used

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  • Electrodeposition MOF-derived HKUST-1-LDH super capacitor electrode material and preparation method thereof
  • Electrodeposition MOF-derived HKUST-1-LDH super capacitor electrode material and preparation method thereof
  • Electrodeposition MOF-derived HKUST-1-LDH super capacitor electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step 1. Processing of carbon cloth: First, cut the carbon cloth to 1*2cm 2 Then arrange the carbon in the lining of the polytetrafluoroethylene reactor containing concentrated nitric acid solution, seal it completely and put it into the oven. After natural cooling, use acetone, deionized water, and absolute ethanol to repeatedly ultrasonically clean for 30 minutes, dry at room temperature, and then set aside for later use.

[0029] Step 2, a certain quality of soluble copper salt trihydrate copper nitrate (Cu(NO 3 ) 2 ·3H 2 O, 0.49g), organic ligand 1,3,5-benzenetricarboxylic acid (H 3 BTC, 0.24g), deionized water (5mL), absolute ethanol (C 2 h 5 OH, 5mL), N,N-dimethylformamide (DMF, 2mL) and glacial acetic acid (CH 3 COOH, 1mL); Stirring time 10min. Gained mixed solution A.

[0030] Step 3. Transfer the mixed solution A obtained in step 2 into a polytetrafluoroethylene lining, put it into a stainless steel high-pressure reactor, place the reactor in an oven at a...

Embodiment 2

[0036] Step 1. Processing of carbon cloth: First, cut the carbon cloth to 1*2cm 2 Then arrange the carbon in the lining of the polytetrafluoroethylene reactor containing concentrated nitric acid solution, seal it completely and put it into the oven. After natural cooling, use acetone, deionized water, and absolute ethanol to repeatedly ultrasonically clean for 30 minutes, dry at room temperature, and then set aside for later use.

[0037] Step 2, a certain quality of soluble copper salt trihydrate copper nitrate (Cu(NO 3 ) 2 ·H 2 O, 0.49g), soluble organic ligand 1,3,5-benzenetricarboxylic acid (H 3 BTC, 0.24g), deionized water (5mL), absolute ethanol (C 2 h 5 OH, 5mL), N,N-dimethylformamide (DMF, 2mL) and glacial acetic acid (CH 3 COOH, 3 mL); solution A was obtained.

[0038] Step 3. Transfer the solution A obtained in step 1 into a polytetrafluoroethylene lining, put it into a stainless steel high-pressure reactor, place the reactor in an oven at a temperature of 55°C,...

Embodiment 3

[0044] Step 1. Processing of carbon cloth: First, cut the carbon cloth to 1*2cm 2 Then arrange the carbon in the lining of the polytetrafluoroethylene reactor containing concentrated nitric acid solution, seal it completely and put it into the oven. After natural cooling, use acetone, deionized water, and absolute ethanol to repeatedly ultrasonically clean for 30 minutes, dry at room temperature, and then set aside for later use.

[0045] Step 2, a certain quality of soluble copper salt trihydrate copper nitrate (Cu(NO 3 ) 2 ·3H 2 O, 0.49g), soluble organic ligand 1,3,5-benzenetricarboxylic acid (H 3 BTC, 0.24g), deionized water (5ml), absolute ethanol (C 2 h 5 OH, 5mL), N,N-dimethylformamide (DMF, 2mL) and glacial acetic acid (CH 3 COOH, 3 mL); the resulting solution A.

[0046] Step 3. Transfer the solution A obtained in step 2 into a polytetrafluoroethylene lining, put it into a stainless steel high-pressure reactor, place the reactor in an oven at a temperature of 5...

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Abstract

The invention belongs to the field of electrochemical energy storage, and relates to an electrodeposition MOF-derived HKUST-1-LDH super capacitor electrode material and a preparation method thereof. The method comprises the steps of firstly, taking carbon cloth as a substrate, preparing an in-situ growth MOF material CC / HKUST-1 (Cu-MOF) from copper nitrate trihydrate and 1, 3, 5-trimesic acid through a solvothermal method, then etching the CC / HKUST-1 material in one step through an electrochemical deposition method, and obtaining the CC / HKUST-1-LDH composite nanomaterial with the three-dimensional urchin-shaped structure. According to the invention, the problems of easy accumulation and uneven distribution of the material in the etching of a traditional hydrothermal method are overcome through a simple and controllable electrochemical deposition method, the preparation method of the prepared material is simple and easy to implement, the material is uniformly distributed on the surface of a carrier, and the material has a larger BET specific surface area, long charging and discharging time, high specific capacitance and good cycling stability.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor electrode materials for energy storage, and in particular relates to an electrodeposited MOF-derived HKUST-1-LDH supercapacitor electrode material and a preparation method thereof. Background technique [0002] In recent years, energy consumption and environmental pollution have brought an existential crisis to human beings that has attracted global attention and inspired researchers to explore new storage technologies that are clean, efficient, low-energy, renewable, and excellent in performance. Supercapacitor (SC) is a new type of energy storage device between traditional capacitors and energy storage devices. Compared with traditional capacitors, it has the characteristics of large capacity, fast charging / discharging efficiency, high power density, excellent durability, high cycle life and environmental friendliness. [0003] Metal-organic frameworks (MOFs) are infinitely extended thre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/30H01G11/32
CPCH01G11/30H01G11/86H01G11/32H01G11/24Y02E60/13
Inventor 张亚男陈俊雷李子涵
Owner SHAANXI UNIV OF SCI & TECH
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