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A kind of high-temperature liquid metal lithium battery and preparation method thereof

A liquid metal and lithium battery technology, which is applied in the manufacture of electrolyte batteries, battery electrodes, secondary batteries, etc., can solve the problems of high melting point of molten salt electrolyte, increased material corrosion, and high operating temperature of batteries

Active Publication Date: 2021-02-05
易航时代(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, liquid metal batteries have not entered the market, mainly because the melting point of its molten salt electrolyte is too high, resulting in high operating temperature of the battery (above 400°C), and problems such as battery sealing and safety are difficult to solve
The electrolyte materials of liquid lithium batteries reported so far are mostly based on molten lithium chloride, lithium bromide, etc., and the operating temperature of the battery is mostly above 400°C. Such a high operating temperature will greatly reduce the life of the battery and increase the corrosion of the material. , and greatly limit the application of battery sealing materials

Method used

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  • A kind of high-temperature liquid metal lithium battery and preparation method thereof
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  • A kind of high-temperature liquid metal lithium battery and preparation method thereof

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preparation example Construction

[0054] The present invention also provides a method for preparing a high-temperature liquid metal lithium battery described in the above technical solution, comprising the following steps:

[0055] In the glove box, put the alumina crucible into the graphite crucible to complete the basic assembly of the shell container;

[0056] In the glove box, put the LAGP type solid electrolyte shell into the alumina crucible, add Bi-Sn alloy between the LAGP type solid electrolyte shell and the alumina crucible, and put metal Li into the LAGP type solid state electrolyte case, insert the negative current collector, and cover the aluminum oxide crucible to obtain the high-temperature liquid metal lithium battery.

[0057] In the present invention, the alumina crucible and the graphite crucible are preferably wiped with alcohol and washed with water, and then placed in an oven for 8-10 hours before being used.

[0058] In order to further illustrate the present invention, the high-tempera...

Embodiment 1

[0060] Powder: the mole fraction ratio is 14.6% LiCO 3 , 4.2% Al 2 o 3 , 2.0%In 2 o 3 , 25.3% GeO 2 and 53.9% NH 4 h 2 PO 4 Make a ratio. Put the mixed powder into a ball mill for grinding for 1 hour. Then put the uniformly ground powder in a platinum crucible, place it in a muffle furnace, raise it from 25°C to 700°C at a speed of 5°C / min, and keep the temperature constant for 2h. Then increase to 1500°C at a rate of 5°C / min and keep the temperature constant for 2h. Take the platinum crucible out of the muffle furnace, add the powder into distilled water, then put the obtained glassy substance into a tube furnace and raise the temperature to 850°C at a rate of 1°C / min, and keep the temperature for 10h. After natural cooling, the obtained glass ceramics are taken out, put into a ball mill for ball milling, and finally a powdery product is obtained. Carry out XRD pattern analysis to powdery product, the result is as follows figure 2 As shown, it can be seen from th...

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Abstract

The invention provides a high-temperature liquid metal lithium battery and a preparation method thereof, belonging to the field of lithium ion batteries. The present invention provides a LAGP type solid electrolyte shell through the precise limitation of the mole fraction of the components of the LAGP type solid electrolyte shell, which can make a relatively large energy storage battery, not a button battery, as long as the positive and negative electrode materials are in a molten state. Yes, the operating temperature of the battery can be greatly reduced, and the operating temperature of the battery can be controlled at 240°C, which is the lowest operating temperature in the field of all-liquid lithium batteries reported so far.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a high-temperature liquid metal lithium battery and a preparation method thereof. Background technique [0002] With the rapid development of the global economy, there are more and more energy storage and environmental issues. The continuous consumption of fossil energy leads to the continuous emission of greenhouse gases such as carbon dioxide, which in turn leads to global warming. Batteries can achieve effective energy storage and can be designed as large-scale energy storage devices. Large-scale energy storage of batteries is a key means to solve energy consumption. It can improve the storage efficiency of clean energy such as solar energy and wind energy, and improve the power grid system. safety and reliability. Therefore, it is one of the most promising energy storage technologies. At this stage, relatively mature energy storage batteries include lithium-i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/38H01M10/0525H01M10/058
CPCH01M4/38H01M4/382H01M4/387H01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 卢惠民于浩
Owner 易航时代(北京)科技有限公司
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