Preparation method of cuprous oxide electrode

A cuprous oxide and electrode technology, applied in the field of electrochemistry, can solve problems such as poor structure uniformity, high cost, and complicated preparation process, and achieve the effects of low cost, excellent product performance, and simple process

Active Publication Date: 2020-09-18
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, commonly used metal current collectors with large specific surface areas include foamed metals and porous metals prepared by dealloying methods. These metal current collectors also have problems such as complex preparation process, high cost, and poor structural uniformity.

Method used

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  • Preparation method of cuprous oxide electrode
  • Preparation method of cuprous oxide electrode
  • Preparation method of cuprous oxide electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) The copper sheet was ultrasonically cleaned with a mixed solution of ethanol and deionized water, and then immersed in a sulfuric acid solution with a mass concentration of 10% for 5 hours to remove possible oxides on the surface of the copper sheet.

[0029] (2) Add 3.2g copper sulfate (0.02 mol), 1.0g ferric sulfate, 0.2g phenyltrimethylammonium chloride, 0.2g benzylamine in 100g deionized water, stir and dissolve, and use 10% Sulfuric acid adjusted the pH of the solution to 5.1.

[0030] (3) take the processed copper sheet as the negative electrode and the platinum sheet as the anode, and the prepared solution of the step (2) is the electrodeposition solution, at room temperature, the current density is 70mA / cm 2 Under the condition of DC electrodeposition for 5 minutes; after the reaction, the sample was washed with deionized water and dried at 150°C for 2 hours to obtain a cuprous oxide electrode.

[0031] The morphology and structure of the prepared cuprous o...

Embodiment 2

[0034] (1) Change sulfuric acid into hydrochloric acid, carry out pretreatment to copper sheet with embodiment 1 (1) process step.

[0035] (2) Add 2.7g cupric chloride, 0.5g ferric chloride, 0.3g phenyltrimethylammonium chloride, 0.1g phenethylamine in 100g deionized water, stir and dissolve, and adjust with 10% sulfuric acid with mass concentration The pH of the solution was 5.6.

[0036] (3) At 120mA / cm 2 Under the condition of direct current electrodeposition for 3 minutes, other process steps are the same as those in Example 1 (3), and a cuprous oxide electrode can be prepared.

Embodiment 3

[0038] (1) Copper sheet is carried out pretreatment with embodiment 1 (1) technological step.

[0039] (2) add 3.6g copper acetate, 1.5g ferric sulfate, 0.1g benzyltrimethylammonium chloride, 0.3g cyclohexylamine in 100g deionized water, stir and dissolve, be the sulfuric acid adjustment solution of 10% with mass concentration The pH is 4.3.

[0040] (3) At 40mA / cm 2 Under the conditions of direct current electrodeposition for 8 minutes, other process steps are the same as in Example 1 (3), and a cuprous oxide electrode can be prepared.

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Abstract

The invention discloses a preparation method of a cuprous oxide electrode. The method comprises the following steps: ultrasonically cleaning a copper sheet, and then immersing the copper sheet in a sulfuric acid or hydrochloric acid solution to obtain a treated copper sheet; and inserting the treated copper sheet as a cathode and a platinum sheet as an anode into an electrodeposition solution, performing direct current deposition for 3-8 minutes at room temperature under the condition that the current density is 40-120mA / cm<2>, and drying a sample at 130-170 DEG C to obtain the cuprous oxide electrode. In the composition of the electrodeposition solution, 0.02 mol of divalent copper salt, 0.5-1.5 g of ferric salt, 0.1-0.3 g of quaternary ammonium salt and 0.1-0.3 g of organic amine compound are added into per 80-120 g of deionized water. The method has the advantages of simple process, low cost, good controllability and excellent product performance.

Description

Technical field: [0001] The invention belongs to the field of electrochemistry, in particular to a method for preparing a cuprous oxide electrode. Background technique: [0002] Supercapacitors are electrical energy storage devices that are widely used in electric vehicles, urban rail transit, portable electronic equipment, aerospace, new energy systems, smart grids, and military equipment. [0003] The performance of supercapacitors is mainly determined by the electrodes, which are composed of current collectors and active substances. Pseudocapacitive active substances have higher storage capacity, which mainly include metal oxides and conductive polymers. Copper oxide has the advantages of good performance, easy preparation, low cost, and environmental protection. There have been reports on copper oxide electrodes. For example, "Chem. Phys. Lett." (2018, 691, P366-372) reported a preparation method of copper oxide electrodes, first preparing nanoporous bamboo leaf-like Cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/08H01G11/46H01G11/86H01G11/26
CPCC25D9/08H01G11/46H01G11/86H01G11/26
Inventor 王西新印泽坤赵建玲李子庆
Owner HEBEI UNIV OF TECH
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