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Metal-ion battery

A metal ion, battery technology, applied in secondary batteries, battery electrodes, battery pack components, etc., can solve problems affecting battery performance and battery life, irreversible heating of battery cores, and pitting corrosion of aluminum negative electrodes

Active Publication Date: 2020-07-07
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the continuous charge and discharge process, the aluminum negative electrode will be irreversibly deposited / dissolved and accompanied by self-corrosion, which will cause the continuous consumption and shrinkage of the aluminum negative electrode area (or even pitting or fragmentation of the aluminum negative electrode), resulting in an increase in the overall current density of the aluminum negative electrode. , which in turn leads to local heating of the battery core and aggravation of irreversible phenomena, which directly affect battery performance and battery life

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0039] An aluminum foil (manufactured by Alfa Aesar) having a thickness of 0.05 mm was provided and cut to obtain an aluminum electrode (35 mm×70 mm in size). Next, two isolating membranes of the same size (glass filter paper (6 layers of 1 / 2 inch), product number Whatman (Whatman) GFA) (size 50 mm x 80 mm) were provided. Next, the anatase phase titanium dioxide powder (average particle size is 20nm) is placed on one of the isolation films, and the other isolation film is covered on the anatase phase titanium dioxide powder to obtain an isolation structure, in which the anatase phase titanium dioxide The average weight per unit area of ​​the powder is about 0.9mg / cm 2 . Next, a nickel foamed board (35 mm x 70 mm in size) was provided. Then, 47 parts by weight of natural graphite powder (purchased from Rong Charcoal Company, model N58-30K), 1 part by weight of carboxymethyl cellulose (CMC) (purchased from NIPPON PAPER company, product number is MAC350HC), 2 parts by weight 5...

Embodiment 2

[0042] Proceed according to the preparation method of the aluminum ion battery (1) described in Example 1, except that the average weight per unit area of ​​the anatase phase titanium dioxide powder is changed from 0.9mg / cm 2 increased to 1.4mg / cm 2 , to obtain aluminum ion battery (2).

[0043] Next, use a battery analyzer (BST8-WA, MTI Corporation) to conduct a charge-discharge test on the aluminum-ion battery (2), and measure the gram capacity at 0.5C, 1C, and 2C charge-discharge rates, and the charge-discharge cycle The results of the gram capacitance (at 1C charge and discharge rate) at 90 cycles are shown in Table 2.

Embodiment 3

[0054] An aluminum foil (manufactured by Alfa Aesar) having a thickness of 0.05 mm was provided and cut to obtain an aluminum electrode (35 mm×70 mm in size). Next, two isolating membranes of the same size (glass filter paper (6 layers of 1 / 2 inch), product number Whatman (Whatman) GFA) (size 50 mm x 80 mm) were provided. Next, the anatase phase titanium dioxide powder (average particle size is 20nm) is placed on one of the isolation films, and the other isolation film is covered on the anatase phase titanium dioxide powder to obtain an isolation structure, in which the anatase phase titanium dioxide The average weight per unit area of ​​the powder is about 0.2mg / cm 2 . Next, a nickel foamed board (35 mm x 70 mm in size) was provided. Then, 47 parts by weight of natural graphite powder (purchased from Rong Charcoal Company, model N58-30K), 1 part by weight of carboxymethyl cellulose (CMC) (purchased from NIPPON PAPER company, product number is MAC350HC), 2 parts by weight 5...

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Abstract

A metal-ion battery is provided. The metal-ion battery includes a positive electrode, a negative electrode, a separating structure, and an electrolyte, wherein the positive electrode and the negativeelectrode are separated by the separating structure, and the electrolyte composition is disposed between the positive electrode and the negative electrode. The separating structure includes a first separator, a second separator, and a dielectric layer, wherein the dielectric layer is disposed between the first separator and the second separator. The dielectric layer consists of a dielectric material, and the dielectric material has a dielectric constant from 10 to 200.

Description

technical field [0001] The present disclosure relates to a metal ion battery. Background technique [0002] Aluminum is abundant on the earth, and electronic devices using aluminum as a material have relatively low cost. Due to the low flammability and electronic redox properties of aluminum, the safety of metal ion batteries in use is greatly improved. [0003] A general aluminum-ion battery is composed of an aluminum negative electrode, a separator, a positive electrode and an electrolyte. However, during the continuous charge and discharge process, the aluminum negative electrode will be irreversibly deposited / dissolved and accompanied by self-corrosion, which will cause the continuous consumption and shrinkage of the aluminum negative electrode area (or even pitting or fragmentation of the aluminum negative electrode), resulting in an increase in the overall current density of the aluminum negative electrode. , which in turn leads to local heating of the battery core a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/054H01M50/414H01M50/417H01M50/429H01M50/434H01M50/437H01M50/457
CPCH01M10/054H01M50/429H01M50/414H01M50/417H01M50/437H01M50/434H01M50/457H01M10/0566H01M10/0585H01M4/80H01M4/663H01M4/0404Y02E60/10Y02P70/50H01M4/668H01M4/48H01M4/661H01M50/46H01M50/44
Inventor 黄茂嘉江建志王禄宇曾丰顺杨昌中
Owner IND TECH RES INST