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Na-CO<2> room-temperature secondary battery and manufacture method thereof

A secondary battery, na-co2 technology, applied in the direction of fuel cell half-cells and secondary battery-type half-cells, etc., can solve the problems of Na-CO2 batteries that have not been reported, achieve high energy density, improve utilization rate, improve the transmission effect

Active Publication Date: 2016-06-01
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As of now, Na-CO 2 Battery not reported

Method used

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  • Na-CO&lt;2&gt; room-temperature secondary battery and manufacture method thereof
  • Na-CO&lt;2&gt; room-temperature secondary battery and manufacture method thereof
  • Na-CO&lt;2&gt; room-temperature secondary battery and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] a Na-CO 2 Room temperature secondary batteries such as Figure 21 As shown, a button battery assembled from negative electrode case 1, shrapnel 2, gasket 3, sodium sheet 4, diaphragm 5, electrolyte, carbon dioxide-air electrode and porous positive electrode case 8, wherein sodium sheet 4 is the negative electrode, carbon dioxide -The air electrode is the positive electrode, and the carbon dioxide-air electrode is composed of a positive electrode catalyst 6 and a current collector 7 with a porous structure; the shrapnel 2 is a stainless steel sheet, which is used to fill the internal space of the battery to improve the airtightness of the battery; the gasket 3 is a stainless steel sheet; the diaphragm 5 is located between the negative electrode sodium sheet 4 and the positive electrode current collector 7, used to block electron transmission; the electrolyte is NaClO 4 / tetraethylene glycol dimethyl ether (TEGDME) solution, the electrolyte is infiltrated in the diaphrag...

Embodiment 2

[0068] One of the Na-CO 2 The preparation method of the room temperature secondary battery, the steps are basically the same as in Example 1, the difference is that the carbon nanotubes are replaced by graphene.

[0069] Figure 12 for Na-CO 2 Battery at 1Ag -1 Under current, intercept 500mAhg -1 charge and discharge curve. It can be seen from the graph that a discharge platform appeared at around 2.2V in the first week, and a charging platform appeared at 3.1V.

Embodiment 3

[0071] One of the Na-CO 2 The preparation method of the room temperature secondary battery is basically the same as in Example 1, except that the carbon nanotubes are replaced by carbon-60 spherical alkenes.

[0072] Figure 13 For button Na-CO 2 Battery at 1Ag -1 Under current, intercept 500mAhg -1 charge and discharge curve. It can be seen from the graph that a discharge platform appeared at around 1.4V in the first week, and a charging platform appeared at 3.5V.

[0073] Na-CO 2 The battery is a brand-new energy storage system based on the quality of the active material Na-CO 2 The battery has 12000Whkg -1 power density. Mass Na-CO based on carbon dioxide and sodium 2 The battery has 1100Whkg -1 theoretical power density. Nearly three times the theoretical energy density of lithium-ion batteries. (Bruce, P.G.; Freunberger, S.A.; Hardwick, L.J.; Tarascon, J.-M., Li–O 2 and Li–Sbatteries with high energy storage. Nature Materials 2011, 11(1), 19-29.)

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Abstract

The invention provides a Na-CO<2> room-temperature secondary battery, which is a button battery formed by assembling a negative shell, a spring sheet, a gasket, a sodium sheet, a membrane, an electrolyte, a carbon dioxide-air electrode and a porous positive shell, wherein the sodium sheet is a negative electrode; the carbon dioxide-air electrode is a positive electrode and comprises a positive catalyst with a porous structure and a current collector; the spring sheet is a stainless steel sheet and is used for filling an internal space of the battery to improve the air-tightness of the battery; the gasket is a stainless steel sheet; the membrane is located between the negative sodium sheet and the positive current collector and is used for blocking electron transportation; and the electrolyte is an NaClO<4> / tetraethylene glycol dimethyl ether solution and infiltrates the membrane. The secondary battery has the advantages of being ultra-high in capacity, rechargeable at room temperature, friendly to environment, low in cost, high in magnification and long in service life; and a preparation method is simple to operate, high in controllability, good in consistency and beneficial to large-scale production.

Description

technical field [0001] The present invention relates to the preparation of novel room temperature secondary battery, especially a kind of Na-CO 2 A room temperature secondary battery and a preparation method thereof. Background technique [0002] Since the industrial revolution, the carbon dioxide and other heat-absorbing greenhouse gases that humans have emitted into the atmosphere have increased year by year, and the greenhouse effect of the atmosphere has also increased, which has caused a series of problems that have attracted the attention of countries all over the world. Therefore, the capture and reuse of carbon dioxide has aroused great concern and attention. Today, the scale of applications in consumer electronics, electric vehicles, and smart grids continues to expand, and energy storage systems with higher energy densities are urgently needed. Therefore, it is imperative to develop new batteries with higher energy density, environmental friendliness and low pric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M12/08
CPCH01M12/08Y02E60/10
Inventor 陈军李子凡胡小飞孙建超赵庆陶占良梁静
Owner NANKAI UNIV
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