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Sodium-sulfur electrical storage battery

A technology of storage batteries and sodium-sulfur batteries, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of restricting the commercial scale application of sodium-sulfur batteries, increasing operating costs, high operating temperature, etc., to broaden the commercial The effect of large-scale application range, production cost reduction and operation cost reduction

Active Publication Date: 2013-07-31
内蒙古默锐能源材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this high-temperature operating state, once the ceramic dielectric is damaged, the high-temperature liquid Na and S will directly contact and undergo a violent exothermic reaction, resulting in a high temperature of 2000 ° C, which is quite dangerous.
Moreover, the high operating temperature also puts forward higher requirements for the selection of battery materials, which increase the operating cost
The potential safety hazards at high temperatures also limit the commercial scale application of sodium-sulfur batteries. At present, sodium-sulfur batteries can only be used for static energy storage devices

Method used

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  • Sodium-sulfur electrical storage battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]Add 50 ml of sodium hydroxide solution with a molar concentration of 10 mol / l into a 150 ml Teflon self-sealing bottle, add 0.20 g of titanium dioxide powder (Degussa P25), and after 7 days of hydrothermal reaction at 160 ° C, the resulting white slurry After pickling and washing with deionized water, the material is poured onto a polyethylene film, baked at 100°C for 10 hours, and then sintered at a temperature above 500°C to remove the polyethylene film to obtain sodium titanate inorganic nanofibers membrane.

Embodiment 2

[0041] Add 50 ml of sodium hydroxide solution with a molar concentration of 10 mol / l into a 150 ml sealed container, add 0.20 g of titanium dioxide powder (Degussa P25), and after 6 days of hydrothermal reaction at 165 ° C, the resulting white slurry is passed through After pickling and washing with deionized water, cover evenly on whatman brand filter paper, first bake at 80°C for 15 hours, and then sinter at 520°C to remove the filter paper to obtain sodium titanate inorganic nanofiber membrane.

Embodiment 3

[0043] The anode of the sodium-sulfur battery is composed of 1.2g of solid metal sodium and 5ml of 1-ethyl-3-methylimidazolium chloride salt, the cathode of the battery is composed of 2g of solid sulfur and 5ml of xylidine, and 1-ethyl-3 -Methylimidazolium chloride salt solution forms the anolyte, and the xylidine solution that has dissolved solid sulfur forms the catholyte, and the anolyte and the catholyte are separated by a sodium ion-conducting membrane; the negative electrode of the battery is an inert metal copper, The positive electrode of the battery is tough and corrosion-resistant graphite; the battery shell is made of polypropylene. The battery is assembled in a nitrogen-filled glove box with controlled humidity. After the battery is assembled and packaged, it is taken out of the glove box, and the battery is charged and discharged using a charging and discharging device. Constantly measured at 50°C, the battery voltage is 1.98V, and the charge and discharge times a...

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Abstract

The invention discloses a sodium-sulfur electrical storage battery comprising an anode, a cathode and a sodion conduction film which are accommodated in a cell housing, wherein the anode is composed of solid metallic sodium and an anode solvent, and the anode solvent dissolving the metallic sodium forms an anode electrolyte; the cathode is composed of solid elemental sulfur and a cathode solvent, and the cathode solvent dissolving the elemental sulfur forms a cathode electrolyte; the sodion conduction film separates the anode electrolyte and the cathode electrolyte and only enables the sodion to be conducted from the anode electrolyte to the cathode electrolyte or from the cathode electrolyte to the anode electrolyte. The sodium-sulfur battery provided by the invention is operated under a temperature of 20-98 DEG C being lower than melting points of the sodium and the sulfur, reduces hidden troubles existing in high-temperature operation for the present sodium-sulfur batteries, reduces operation cost of the sodium-sulfur battery, and broadens commercial large-scale application range of the sodium-sulfur battery.

Description

technical field [0001] The invention relates to the technical field of storage batteries, in particular to a sodium-sulfur storage battery. Background technique [0002] A battery is a device used to store and release electrical energy and has a wide range of applications. Charging is the conversion of chemical energy to electrical energy, and discharging is the conversion of electrical energy to chemical energy. Batteries are mainly used in three categories, fixed batteries, as backup power and load balancing; mobile batteries, used for portable electronic devices, such as mobile phones and laptops; transportation batteries, mainly used for power assist in electric vehicles. [0003] Among them, as a new generation of power storage system, sodium-sulfur battery is highly anticipated. It has the characteristics of large raw material reserves, high energy and power density, high charge and discharge efficiency, no space restrictions, and convenient maintenance. It has become...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/39H01M4/02
CPCY02E60/12Y02E60/10
Inventor 杨芳晓杨树仁程文学李建业王德强单海山
Owner 内蒙古默锐能源材料有限公司
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