Organic anode used for sodium carbon dioxide battery and manufacturing method thereof, and sodium carbon dioxide battery

A technology of carbon dioxide and organic electrolyte, applied in the direction of fuel cell half-cells and secondary battery-type half-cells, battery electrodes, fuel cells, etc. Liquid is easy to volatilize and other problems, to achieve the effect of improving conductivity

Active Publication Date: 2019-12-03
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past few years, the electrochemical conversion of carbon dioxide has been extensively studied, but limited to the liquid electrolyte is volatile and easy to leak, the structure design of the gas electrode is unreasonable, and the catalytic activity of the catalyst is not high, so the metal carbon dioxide battery has never been used. have a major breakthrough

Method used

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  • Organic anode used for sodium carbon dioxide battery and manufacturing method thereof, and sodium carbon dioxide battery
  • Organic anode used for sodium carbon dioxide battery and manufacturing method thereof, and sodium carbon dioxide battery
  • Organic anode used for sodium carbon dioxide battery and manufacturing method thereof, and sodium carbon dioxide battery

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Such as figure 1 As shown, a sodium carbon dioxide battery based on an organic cathode includes: stacked metal sodium, an organic electrolyte, a solid electrolyte, and an organic cathode.

[0038] Among them, the negative electrode is a metal sodium block with a thickness of 0.6mm and an area of ​​0.785cm 2 , the organic electrolyte is 1mol / LNaClO 4 / [(EC+DMC)(1:1)+l vol%FEC], solid electrolyte thickness is 1mm, NASICON solid electrolyte diaphragm with a diameter of 16mm, organic positive electrode includes carbon nanotubes, activated carbon, polytetrafluoroethylene, 1mol / L NaClO 4 / [(EC+DMC)(1:1)+l vol%FEC], mixed according to solid-liquid ratio 15mg:5mg:0.1mg:2ml, ultrasonicated for 12 hours, centrifuged at 10000rpm for 5 minutes, vacuum dried at 80°C for 12 hours, and evenly coated Prepared on carbon paper with a loading of 3.0 mg / cm 2 .

[0039] The sodium carbon dioxide battery assembled in this example is in pure CO at 30°C 2 The charge and discharge perfor...

Embodiment 2

[0041] Such as figure 1 As shown, a sodium carbon dioxide battery based on an organic cathode includes: stacked metal sodium, an organic electrolyte, a solid electrolyte, and an organic cathode.

[0042] Among them, the negative electrode is a metal sodium block with a thickness of 0.5mm and an area of ​​0.785cm 2 , the organic electrolyte is 1mol / LNaClO 4 / [(EC+DMC)(1:1)+l vol%FEC], the thickness of the solid electrolyte is 0.8mm, the diameter of the NASICON solid electrolyte diaphragm is 16mm, and the organic positive electrode includes carbon nanohorns, activated carbon, polytetrafluoroethylene, 1mol / L NaClO 4 / [(EC+DMC)(1:1)+l vol%FEC], mixed according to solid-liquid ratio 10mg:5mg:0.1mg:1.5ml, ultrasonicated for 10 hours, centrifuged at 10000rpm for 10 minutes, vacuum dried at 80°C for 18 hours, and evenly coated Prepared by covering on carbon paper, the loading capacity is 3.5mg / cm 2 .

[0043] The sodium carbon dioxide battery assembled in this example is in pure ...

Embodiment 3

[0045] Such as figure 1 As shown, a sodium carbon dioxide battery based on an organic cathode includes: stacked metal sodium, an organic electrolyte, a solid electrolyte, and an organic cathode.

[0046] Among them, the negative electrode is a metal sodium block with a thickness of 0.7mm and an area of ​​0.785cm 2 , the organic electrolyte is 1mol / LNaClO 4 / [(EC+DMC)(1:1)+l vol%FEC], the thickness of the solid electrolyte is 0.8mm, the diameter of the NASICON solid electrolyte separator is 16mm, and the organic positive electrode includes 40% Pt / C, activated carbon, polytetrafluoroethylene , 1mol / L NaClO 4 / TEGDME, mixed according to the solid-liquid ratio of 20mg:5mg:0.1mg:2.0ml, sonicated for 10 hours, centrifuged at 10000rpm for 10 minutes, vacuum-dried at 80°C for 48 hours, and evenly coated on carbon paper, with a loading capacity of 3.0mg / cm 2 .

[0047] The sodium carbon dioxide battery assembled in this example is in pure CO at 30°C 2 The charge and discharge perf...

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Abstract

The invention relates to an organic anode used for a sodium carbon dioxide battery and a manufacturing method thereof, and the sodium carbon dioxide battery. The organic anode comprises a catalyst, anorganic electrolyte for activating the catalyst and providing sodions, a conductive additive and a binder. The organic electrolyte comprises one of a sodium perchlorate electrolyte, a sodium trifluoromethanesulfonate electrolyte, a sodium bis(trifluoromethanesulfonyl)imide electrolyte and a sodium hexafluorophosphate electrolyte. The catalyst comprises at least one of graphite, activated carbon,Ketjen black, carbon fibers, carbon nano angles, carbon nanotubes, graphene, a modified carbon material and other porous active materials. The organic electrolyte activation catalyst can effectively accelerate a transmission rate of ions and electrons and conductivity is improved.

Description

technical field [0001] The invention relates to the field of new energy materials, and more specifically, relates to an organic positive electrode used in a sodium-carbon dioxide battery, a preparation method thereof, and a sodium-carbon dioxide battery. Background technique [0002] In recent years, the excessive consumption of non-renewable fossil fuels such as coal, oil, and natural gas has raised global concerns about energy shortages, and the corresponding CO 2 Emissions also contribute to severe global warming and other worsening environmental problems. At present, the content of carbon dioxide in the atmosphere has exceeded 0.04%, and the increase of carbon dioxide content has led to the intensification of the global warming effect. Using renewable energy and changing existing energy utilization methods are the most important strategic choices to solve energy shortages and replace fossil energy. However, renewable energy (such as geothermal energy, wind energy, nucl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0668H01M12/08H01M4/96H01M4/88
CPCH01M4/8828H01M4/8882H01M4/96H01M8/0668H01M12/08Y02E60/50
Inventor 湛菁徐昌藩梁风
Owner CENT SOUTH UNIV
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