Check patentability & draft patents in minutes with Patsnap Eureka AI!

Application of electrode with residual ions in electrochemical reduction reaction of CO2

An electrochemical and electrode technology, applied in the field of electrode preparation with residual ions, can solve the problems of high reaction overpotential, poor product selectivity, low conversion rate, etc., achieve high selectivity, increase adsorption capacity, and widen Faradaic efficiency. Effect

Active Publication Date: 2021-06-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main factors restricting the development of ERC technology include: (1) high reaction overpotential; (2) low conversion rate; (3) poor product selectivity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Application of electrode with residual ions in electrochemical reduction reaction of CO2

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Copper base electrode degreasing pretreatment: At room temperature, the copper sheet with a length and width of 2cm and 3cm, and a thickness of 0.2mm, is ultrasonically soaked in acetone for 10 minutes, then cleaned with absolute ethanol, and ultrasonically soaked for 10 minutes. Finally, blow dry with Ar gas, soak in 3M Hcl aqueous solution for 1 h, and wash with deionized water.

[0019] 2. Fill 180ml of potassium fluoride 1M electrolyte solution between the two treated copper electrodes, and apply a voltage of 1.5V to the two electrodes for 10 minutes to transfer electrons between the two electrodes. During this process, the electrolyte The anions and cations in the electrode also migrate directionally to the two electrodes and reach equilibrium.

[0020] 3. When the applied potential is over, the two electrodes are quickly drawn out of the solution, so that the ion transmission channel between the two electrodes is quickly cut off, thereby obtaining two charged e...

Embodiment 2

[0025] 1. Copper base electrode degreasing pretreatment: At room temperature, the copper sheet with a length and width of 2cm and 3cm, and a thickness of 0.2mm, is ultrasonically soaked in acetone for 10 minutes, then cleaned with absolute ethanol, and ultrasonically soaked for 10 minutes. Finally, blow dry with Ar gas, soak in 3M HCl aqueous solution for 1 h, and wash with deionized water.

[0026]2. Fill the gap between the two treated copper electrodes with 180ml of 1M electrolyte solution such as sodium chloride, and apply a voltage of 1.5V to the two electrodes for 10 minutes to transfer electrons between the two electrodes. Anions and cations in the electrolyte also migrate directionally to the two electrodes and reach equilibrium.

[0027] 3. When the applied potential is over, the two electrodes are quickly drawn out of the solution, so that the ion transmission channel between the two electrodes is quickly cut off, thereby obtaining two charged electrodes with remaini...

Embodiment 3

[0032] 1. Copper base electrode degreasing pretreatment: At room temperature, the copper sheet with a length and width of 2cm and 3cm, and a thickness of 0.2mm, is ultrasonically soaked in acetone for 10 minutes, then cleaned with absolute ethanol, and ultrasonically soaked for 10 minutes. Finally, blow dry with Ar gas, soak in 3M HCl aqueous solution for 1 h, and wash with deionized water.

[0033] 2. Fill the space between two treated copper electrodes with 180ml BMImBF 4 , BMImPF 6 Wait for the ionic liquid containing 1M organic imidazolium anions, apply a voltage of 1.5V on the two electrodes for 10min, so that the electrons are transferred between the two electrodes, and during this process, the anions and cations in the electrolyte also migrate to the two electrodes respectively. electrodes and reach equilibrium.

[0034] 3. When the applied potential is over, the two electrodes are quickly drawn out of the solution, so that the ion transmission channel between the two...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to application of an electrode with residual ions in an electrochemical reduction reaction of CO2. The electrode comprises an electronic conductor, an active substance and an electrolyte attached to the electronic conductor and the active substance. The electrode simultaneously carries residual electrons or residual holes as well as positive ions and negative ions introduced by the electrolyte; the residual electrons or holes are located on the electron conductor and / or the activesubstance, and the positive ions and the negative ions exist in the electrolyte; the absolute values of the number of charges carried by the positive ions and the negative ions in the electrolyte are not equal; when the electrode carries residual electrons, the net charge quantity is N residual electrons, the total charge quantity of the positive ions attached to the electrode is greater than the total charge quantity of the negative ions, the net charge quantity of the ions is positive charges, and the net charge quantity is M positive ions; and when the electrode is provided with residual holes, the net charge quantity is N residual holes, the total charge quantity of the positive ions on the electrode is smaller than the total charge quantity of the negative ions, the net charge quantity of ions is negative charges, and the net charge quantity of ions is M negative ions. The electrode is applied to electrochemical reduction of CO2 and the field of electrochemistry.

Description

technical field [0001] The invention belongs to the field of electrochemistry and chemistry, and in particular relates to an electrode with residual ions, a preparation method and application. [0002] technical background [0003] With the rapid development of the global economy, the emission of carbon dioxide is increasing day by day, CO in the atmosphere 2 The resulting "greenhouse effect" has become one of the key environmental issues that the world is concerned about. To reduce CO in the atmosphere 2 content, the researchers used a variety of technical means to convert CO 2 for recovery, conversion and reuse. [0004] with other COs 2 Conversion technology compared to electrochemical reduction of CO 2 The outstanding advantage of the technology (ERC) is that water can be used as the hydrogen source for the reaction, and it can effectively overcome CO 2 / CO 2 *-High reaction overpotential (-1.97V vs SHE), CO2 can be realized at normal temperature and pressure 2 Hi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01D53/32
CPCB01D53/32B01D2257/504
Inventor 张洪章李先锋姚鹏飞张华民
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com