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Sodium-air or -nitrogen battery

A technology of oxygen battery and air electrode, which is applied in the direction of fuel cell half-cells and primary battery-type half-cells, etc. It can solve the problems of complex process and high energy consumption, and achieve the effect of easy implementation and favorable storage and utilization

Inactive Publication Date: 2018-10-19
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to be completed under high temperature and high pressure, and the process is complicated and consumes a lot of energy.

Method used

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  • Sodium-air or -nitrogen battery
  • Sodium-air or -nitrogen battery
  • Sodium-air or -nitrogen battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Assemble the sodium-air battery, the negative electrode is made of metal sodium sheet, the positive electrode is made of carbon cloth, the square carbon cloth is cut into a disc with a diameter of 1 cm, the electrolyte is sodium trifluoromethanesulfonate, and the solvent is tetraethylene glycol dimethyl ether , the diaphragm is made of glass fiber, and the CR2032 battery shell is used to assemble a button battery. A small hole is punched on the positive shell for gas circulation. The gas source is air in the atmosphere. The battery is left to stand for 12 hours before the test, and then tested on the blue battery. The charge and discharge test is carried out on the instrument, and the CV test is carried out on the electrochemical workstation, such as figure 1 As shown, it shows that the prepared sodium-air battery can have good cycle performance in the air and has a large capacity.

Embodiment 2

[0021] Assemble the sodium-nitrogen battery, the negative electrode is made of metal sodium sheet, the positive electrode is made of carbon cloth, the square carbon cloth is cut into a disc with a diameter of 1cm, the electrolyte is sodium trifluoromethanesulfonate, and the solvent is tetraethylene glycol dimethyl ether , the diaphragm is made of glass fiber, and the CR2032 battery shell is used to assemble a button battery. A small hole is punched on the positive shell to facilitate gas circulation. The gas source is high-purity nitrogen. Before the battery test, stand still for 12 hours, and then test it in the blue electric battery tester. Carry out the charge and discharge test on the electrochemical workstation, and carry out the CV test on the electrochemical workstation, such as figure 2 As shown, it shows that the prepared sodium-nitrogen battery can have good cycle performance in the air and has a large capacity. This is the first time a sodium-air battery has been c...

Embodiment 3

[0023] Assemble the sodium-nitrogen battery, the negative electrode uses metal sodium sheet, the positive electrode uses carbon cloth to grow manganese dioxide nanowires in situ, cut the carbon cloth with manganese dioxide material into a disc with a diameter of 1 cm, and the electrolyte is trifluoroform Sodium sulfonate, the solvent is tetraethylene glycol dimethyl ether, the diaphragm is made of glass fiber, and the CR2032 battery case is used to assemble a button battery. There are small holes on the positive case for gas circulation. The gas source is high temperature in the atmosphere. Pure nitrogen, stand still for 12 hours before the battery test, then perform the charge and discharge test on the blue battery tester, and perform the CV test on the electrochemical workstation, such as image 3 As shown, it shows that the use of manganese oxide and carbon cloth composite electrode materials can improve the performance of the battery, including the cycle effect and the capa...

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PUM

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Abstract

The invention discloses a sodium-air or -nitrogen battery. The structure of the sodium-air or -nitrogen battery is the structure of an existing sodium-oxygen battery, comprises a positive electrode, adiaphragm and a negative electrode which are sequentially superposed, and an electrolyte is fully filled between the positive electrode and the negative electrode; the positive electrode is an air electrode, air or nitrogen in atmosphere is used as a gas source, and the air electrode is made from a porous carbon material or a carbon cloth and transition metal oxide composite material; and the negative electrode is made from a metal sodium sheet, the diaphragm is made from glass fibers, and the electrolyte is sodium trifluomethanesulfonate. The sodium-air battery can run in the atmosphere or in nitrogen with a highest content in air, and is easy to enforce; and the sodium-nitrogen battery can convert nitrogen in air into sodium nitride, provides a new idea for nitrogen fixation, develops anew artificial nitrogen fixation method, develops a new battery system, accords with requirements of green chemistry, and facilitates the large-scale storage and application of renewable energy.

Description

Technical field: [0001] The invention relates to electrochemical nitrogen fixation technology, in particular to a sodium-air or nitrogen battery. Background technique [0002] Today, environmental issues are of great concern, so the energy storage devices required for electric or hybrid vehicles that replace fuel-powered vehicles have been well developed. Lithium-ion batteries have been widely used in portable electronic products, power tools and other fields due to their high energy density. However, the mature lithium-ion batteries so far use inorganic transition metal elements such as cobalt and nickel as the main positive electrode active materials. Therefore, the large-scale use of lithium-ion batteries will inevitably lead to a crisis of metal resources such as cobalt and nickel. Moreover, the energy density of lithium-ion batteries is approaching the limit. Therefore, it is inevitable to develop chemical power sources with higher energy density. Sodium-oxygen batte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M12/06
CPCH01M12/06
Inventor 赵翠玲葛炳成彭秋明冯佳文
Owner YANSHAN UNIV