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A nickel foam/mxene-co 3 o 4 Composite electrode and preparation method thereof

A technology of composite electrodes and nickel foam, applied in the field of electrochemistry, can solve problems such as limiting large-scale applications, achieve the effects of improving activity and stability, avoiding the use of adhesives, and overcoming easy agglomeration

Active Publication Date: 2022-04-19
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, binders are often required to load catalysts on substrates, and expensive binders limit the large-scale application of these methods.

Method used

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  • A nickel foam/mxene-co <sub>3</sub> o <sub>4</sub> Composite electrode and preparation method thereof
  • A nickel foam/mxene-co <sub>3</sub> o <sub>4</sub> Composite electrode and preparation method thereof
  • A nickel foam/mxene-co <sub>3</sub> o <sub>4</sub> Composite electrode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Nickel foam was taken, ultrasonically cleaned three times with sulfuric acid, ethanol, and deionized water in sequence, and dried in a constant temperature oven at a temperature of 50 °C for 1 h; MXene, Co 3 o 4 Mix and oscillate with a vortex oscillator for 2 minutes to prepare mixed powder, apply it evenly on the surface of nickel foam, and vacuum plasma sinter. Composite electrode;

[0034] The nickel foam has a diameter of 2 cm, a pore size of 100 μm, and a thickness of 3 mm; MXene and Co 3 o 4 The mass ratio is 1:6, the mass of the mixed powder is 0.05g, Co 3 o 4 The average particle size is 20nm.

Embodiment 2

[0036] Nickel foam was ultrasonically cleaned twice with sulfuric acid, ethanol, and deionized water in sequence, and dried in a constant temperature oven at 50 °C for 1.2 h; MXene, Co 3 o 4 Mix and oscillate with a vortex oscillator for 2 minutes to prepare mixed powder, evenly spread on the surface of nickel foam, and vacuum plasma sintering. composite electrode;

[0037] The nickel foam has a diameter of 3 cm, a pore size of 200 μm, and a thickness of 3.5 mm; MXene and Co 3 o 4 The mass ratio is 1:5, the mass of the mixed powder is 0.07g, Co 3 o 4 The average particle size is 80nm.

Embodiment 3

[0039] Nickel foam was ultrasonically cleaned three times with sulfuric acid, ethanol, and deionized water in sequence, and dried in a constant temperature oven at 50 °C for 1.5 h; MXene, Co 3 o 4 Mix and oscillate with a vortex oscillator for 4 minutes to obtain a mixed powder, which is evenly spread on the surface of nickel foam and vacuum plasma sintered. The sintering process is: vacuum 55Pa, sintering temperature is 600°C, applied pressure is 2MPa, and the sintering time is 15min. Composite electrode;

[0040] The nickel foam has a diameter of 2.5 cm, a pore size of 150 μm, and a thickness of 4 mm; MXene and Co 3 o 4 The quality of the mixed powder is 0.1g when the mass ratio is 1:4, Co 3 o 4 The average particle size is 50nm.

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Abstract

The invention discloses a nickel foam / MXene‑Co 3 o 4 The composite electrode and its preparation method comprise the following steps: (1) pretreatment of foamed nickel: take foamed nickel, ultrasonically clean it with sulfuric acid, ethanol, and deionized water in sequence, and dry at constant temperature; (2) preparation of composite electrode: take MXene, co 3 o 4 Mix to prepare mixed powder, smear on the surface of nickel foam, and vacuum plasma sinter to prepare a composite electrode. The present invention adopts nickel foam, MXene and Co 3 o 4 The foam material composite electrode is prepared, and the MXene‑Co 3 o 4 The mixed powder is stably combined, avoiding the use of binders, reducing the preparation cost, and the preparation time is only 40-60 minutes; the organ-shaped structure of MXene can effectively accommodate and disperse the catalyst, which overcomes the problem of easy agglomeration of the catalyst and improves the production efficiency of the catalyst. The activity and stability of the catalyst, the prepared electrode has a large specific surface area and good electrical conductivity, and can form an electrode material with excellent performance.

Description

technical field [0001] The invention relates to the field of electrochemical technology, specifically a nickel foam / MXene-Co 3 o 4 Composite electrode and its preparation method. Background technique [0002] With the rapid development of my country's economy and society, the degree of industrialization and urbanization continues to increase, and the shortage of water resources caused by water pollution is becoming more and more serious. Due to its ubiquity in industrial and commercial products as well as its high water solubility and resistance to biodegradation, 1,4-dioxane has been found in many places as a water pollutant. At present, traditional wastewater treatment technologies, including air extraction, sedimentation coagulation, carbon adsorption and traditional biological treatment, cannot effectively remove 1,4-dioxane. In recent years, because persulfate advanced oxidation technology can generate strong oxidative active species (such as sulfate radical and hydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F1/72C23C24/08C25D3/12C25D5/56C22F1/10C21D1/26B22F1/054B22F9/16B82Y30/00B82Y40/00C02F101/30
CPCC02F1/46109C02F1/4672C23C24/082C25D3/12C25D5/54C22F1/10C21D1/26B22F9/16B82Y30/00B82Y40/00C02F2001/46133C02F2101/30B22F1/07B22F1/0547
Inventor 林辉李唯李威吕斯濠刘倩
Owner DONGGUAN UNIV OF TECH
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