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A dendrite-free, high-rate aluminum-ion battery

An aluminum ion battery, high-rate technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of insufficient rate performance and cycle stability characteristics, to improve cycle stability and rate performance, increase charge and discharge rate, Facilitate the effect of transmission

Active Publication Date: 2020-08-18
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the technical problems of insufficient rate performance and cycle stability characteristics of aluminum ion batteries in the prior art due to dendrite generation

Method used

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  • A dendrite-free, high-rate aluminum-ion battery
  • A dendrite-free, high-rate aluminum-ion battery
  • A dendrite-free, high-rate aluminum-ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Preparation of negative electrode materials

[0046] First soak the 0-30A g in the magnification range with 1M HCl -1 High-purity aluminum foil for 10 minutes, chemical pre-treatment to remove oil, washed with water, and then dried in an oven. After weighing, the aluminum foil was used as the anode, and the platinum sheet was used as the cathode. 2 SO 4 Perform direct current etching for 300s with a current density of 200mA cm -2 . After etching, it was washed with water, dried and weighed.

[0047] (2) Preparation of aluminum ion battery electrolyte

[0048] Choose aluminum trichloride (AlCl 3 ) as a solute, 1-ethyl-3-methylimidazolium chloride ([EMIm]Cl) as a solvent, and the mole fraction ratio is 1.3 to weigh AlCl respectively 3 and [EMIm]Cl. First melt [EMIm]Cl into a liquid at 70°C, stir with a magnet, and then slowly add AlCl 3 powder, continue to stir to form a light yellow aluminum-based ionic liquid electrolyte.

[0049] (3) Assembly of aluminum ...

Embodiment 2

[0051] Embodiment 2: The angle between the aluminum foil sheet and the platinum sheet is selected to be 0°, and the rest are the same as in Embodiment 1.

Embodiment 3

[0052] Embodiment 3: The angle between the aluminum foil and the platinum sheet is selected to be 30°, and the rest are the same as in Embodiment 1.

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Abstract

The invention belongs to the technical field of energy storage batteries and particularly relates to a dendrite-free and high-rate aluminum ion battery. The aluminum ion battery comprises an anode, acathode, electrolyte and an isolating membrane, wherein the isolating membrane is arranged between the anode and the cathode; and the cathode is a porous aluminum foil, an included angle between a pore channel direction of the porous aluminum foil and an aluminum ion transmission direction is gamma, and gamma is more than or equal to 0 and less than or equal to 90 degrees. Compared with the priorart, the problem that a dendrite is produced by taking a plane aluminum foil as a cathode of an aluminum ion battery under a large-current long cycle condition is effectively inhibited, and the cycling stability and rate capability of a device are effectively improved; and the technical problems of poor rate capability and cycling stability of the aluminum ion battery caused by the production of the dendrite in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of energy storage batteries, in particular to a dendrite-free, high-rate aluminum ion battery. Background technique [0002] In recent years, a variety of new mobile electronic devices and electric vehicles have emerged continuously, but the accompanying energy depletion and environmental pollution cannot be ignored. Therefore, the search for sustainable clean energy has become the focus of the scientific community. [0003] At present, lithium-ion batteries and their industries, which have the advantages of high energy density and low self-discharge rate, continue to flourish, are widely used in various portable electronic devices, and have been commercialized. However, the existing lithium-ion battery technology can no longer meet the actual needs due to problems such as slow charge and discharge rate, poor safety, and high cost, which provides an opportunity for the development of other new energy technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/054H01M4/134
CPCH01M4/134H01M10/054H01M2004/021H01M2004/027Y02E60/10
Inventor 杨全红龙昱李欢陶莹叶明春陈正宇
Owner TIANJIN UNIV
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