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Novel paste electrolyte used for high-temperature molten salt battery and preparation method thereof

A technology of molten salt electrolyte and high-temperature molten salt, which is applied in the field of electrolyte materials for energy storage batteries, can solve problems such as inability to effectively solve battery short circuit problems, lower battery operating voltage, and increased electrolyte resistance, so as to reduce the risk of short circuit or open circuit, The effect of high conductivity and fast mass transfer

Active Publication Date: 2014-05-28
HUAZHONG UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

However, the simple blending process not only cannot effectively solve the short-circuit problem of the battery, but will increase the resistance of the electrolyte and decrease the conductivity due to the introduction of ceramic powder. The decrease in the conductivity of the electrolyte will lead to a decrease in the working voltage of the battery and a deterioration of the Coulombic efficiency, which will affect the entire battery. battery performance

Method used

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  • Novel paste electrolyte used for high-temperature molten salt battery and preparation method thereof
  • Novel paste electrolyte used for high-temperature molten salt battery and preparation method thereof
  • Novel paste electrolyte used for high-temperature molten salt battery and preparation method thereof

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] The electrolyte material of this embodiment is to add MgO filler or Al on the basis of molten salt electrolyte 2 o 3 Made of fiber filling. Among them, the MgO filler content in the MgO-based paste electrolyte is 20% to 50% by mass, and the particle size of the MgO powder is 50nm to 500nm. The MgO particles in the paste electrolyte will be enriched in the electrolyte to form MgO-enriched areas, and the MgO-enriched areas are dispersed in the molten salt. Under the action of capillary force, the MgO-enriched areas will have a strong binding effect on the molten salt. The mixture of molten ...

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Abstract

The invention discloses a paste electrolyte used for a high-temperature molten salt battery. The electrolyte material is prepared by adding a MgO filling material or an Al2O3 fiber filling material into a molten salt electrolyte, wherein the content of the MgO filling material is 20-50 wt%, and the content of the Al2O3 fiber filling material is 5-20% by volume. At the working temperature of the battery, the mixture of the molten salt and the filling materials exists in a form of paste with high viscosity, so that the paste electrolyte basically has characteristics of the high conductive rate, quick mass transfer, and the like of liquid electrolytes, and is capable of effectively reducing the risks of short circuit and open circuit of the battery and enhancing the stability and safety of the battery operation.

Description

technical field [0001] The invention relates to an electrolyte material for high-temperature molten salt batteries and a preparation method thereof, and mainly relates to two preparation methods for preparing traditional high-temperature molten-salt battery full liquid electrolytes into paste electrolytes with a certain viscosity, belonging to storage Electrolyte materials for batteries. technical background [0002] Large-scale energy storage is one of the key technologies for the development of modern power systems. In recent years, the research and development of efficient and cheap large-scale energy storage battery systems has become a hot spot in the field of energy storage, such as modified lead-acid batteries, lithium-ion batteries, sodium-sulfur batteries, etc. However, many energy storage parameters of existing electrochemical energy storage technologies, especially price and lifetime, cannot meet the current energy storage market demand. [0003] In the late 196...

Claims

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Application Information

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IPC IPC(8): H01M10/38
CPCH01M10/38H01M10/399H01M2300/0048H01M2300/0091Y02E60/10Y02P70/50
Inventor 蒋凯王如星王康丽王玮程时杰
Owner HUAZHONG UNIV OF SCI & TECH
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