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Rechargeable aluminum ion fused salt battery and preparation method thereof

A molten salt battery, aluminum ion technology, applied in secondary batteries, sustainable manufacturing/processing, circuits, etc., can solve problems such as potential safety hazards, and achieve the effect of reducing production costs, reducing internal resistance, and cheap prices

Active Publication Date: 2015-08-26
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the impact of global lithium reserves, it is almost an impossible task to apply lithium-ion batteries to large-scale energy conversion and storage of green and environmentally friendly energy such as wind energy, solar energy, and tidal energy.
In addition, the potential safety hazards of lithium-ion batteries due to the formation of dendrites in the negative electrode have led people to seek new battery systems.

Method used

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  • Rechargeable aluminum ion fused salt battery and preparation method thereof
  • Rechargeable aluminum ion fused salt battery and preparation method thereof
  • Rechargeable aluminum ion fused salt battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take a graphite block with a purity of more than 99% and process it into a circular block with a diameter of 1000mm and a thickness of 200mm, and process a thread with a depth of 100mm and a diameter of 100mm at the center of the cross-section of the chip, and connect by thread A stainless steel rod with a diameter of 60mm was used as the conductive rod of the anode graphite. A cylindrical electrolytic cell with an inner diameter of 1200mm and a depth of 1000mm is built as a reaction vessel with conductive bottom and sidewalls insulated. Under the protection of an inert atmosphere, an aluminum ingot with a purity greater than 99% is selected and pre-melted at the bottom of the reaction vessel to form a cylindrical-like aluminum ingot with a thickness of about 100 mm covering the entire bottom of the reaction vessel. Equimolar NaF and KF were used as supporting electrolytes, and 10% Na was added 3 AlF 6 to provide aluminum ions. When assembling the battery, a uniforml...

Embodiment 2

[0030] Take a graphite block with a purity of more than 99%, and process it into a square block with a side length of 1000mm and a height of 200mm, and process a thread with a depth of 100mm and a diameter of 100mm at the center of the cross-section of the chip. Connect a stainless steel rod with a diameter of 60mm as the conductive rod of the positive graphite. A rectangular parallelepiped electrolytic cell with a side length of 1200mm and a depth of 1000mm in masonry is conductive and the sidewall is insulated as a reaction vessel. Under the protection of an inert atmosphere, a copper-aluminum ingot is selected and pre-melted at the bottom of the reaction vessel to form a cylindrical-like copper-aluminum alloy ingot with a thickness of about 60 mm covering the entire bottom of the reaction vessel. Using equimolar LiF and KF as supporting electrolyte, and adding 8% AlCl 3 to provide aluminum ions. When assembling the battery, a uniformly mixed electrolyte was added to the r...

Embodiment 3

[0032] The graphite block with a purity of more than 90% is processed into a square block with a side length of 1000mm and a thickness of 100mm, and a thread with a depth of 200mm and a diameter of 60mm is machined on one side of the sheet, and a stainless steel with a diameter of 60mm is connected by the thread. The rods act as conductive rods for the anode graphite. A cubic electrolytic cell with a side length of 1200mm and a depth of 1200mm was built as a reaction vessel. Select an aluminum ingot with a purity greater than 99%, process it into a square sheet with a side length of 1000mm and a thickness of 50mm, and process a thread with a depth of 100mm and a diameter of 30mm on one side of the sheet, and connect a stainless steel with a diameter of 30mm through the thread. The rod acts as the conductive rod of the negative aluminum sheet. In equimolar CaCl 2 and LiCl as supporting electrolyte, and add 8% AlF 3 to provide aluminum ions. When assembling the battery, a unif...

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Abstract

The invention relates to a rechargeable aluminum ion fused salt battery and a preparation method thereof, belongs to the technical field of batteries, and is used for energy storage and transformation of reproducible clean energy such as wind energy, solar energy and tidal energy. The rechargeable aluminum ion fused salt battery comprises an anode, a cathode and electrolyte, wherein the anode is made of graphite, the cathode is made of metal aluminum or alloy thereof, and the electrolyte is a fused haloid system including aluminum ions. The rechargeable aluminum ion fused salt battery provided by the invention has the characteristics of being capable of charging and discharging quickly, high in capacity and efficiency, stable in cycle performance, high in safety, clean and environment-friendly.

Description

technical field [0001] The invention belongs to a rechargeable and dischargeable aluminum ion molten salt battery and a preparation method thereof, which can be used for energy storage, conversion and utilization of renewable clean energy such as wind energy, solar energy, tidal energy and the like. Background technique [0002] In recent years, with the continuous reduction of coal, oil and natural gas and the environmental pressure brought by their use, the development and utilization of clean and renewable energy has become a hot research topic. Among them, electricity has become a key factor in the development and utilization of the entire renewable clean energy because it is in the core stage of multiple energy conversion. However, in order to realize the efficient utilization of these electric energy, the problem of electric energy storage is involved. The rechargeability of secondary batteries is currently the most effective and promising way to solve the problem of ...

Claims

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Application Information

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IPC IPC(8): H01M10/38H01M10/39
CPCH01M10/38H01M10/399H01M10/39Y02E60/10Y02P70/50
Inventor 焦树强焦汉东王俊香刘勇
Owner UNIV OF SCI & TECH BEIJING
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