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Self-destruction structure, electrolyte, electrode, diaphragm and battery

An electrolyte and self-destruction technology, applied in the fields of electrodes, diaphragms, batteries, self-destruction structures, and electrolytes, which can solve problems such as endangering life safety and explosion of lithium batteries.

Inactive Publication Date: 2020-12-01
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermal runaway of lithium batteries can lead to explosion and even endanger life safety

Method used

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  • Self-destruction structure, electrolyte, electrode, diaphragm and battery
  • Self-destruction structure, electrolyte, electrode, diaphragm and battery
  • Self-destruction structure, electrolyte, electrode, diaphragm and battery

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Embodiment Construction

[0052] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0053] The serial numbers numbered for components in this document, such as "first", "second", etc., are only used to classify the described objects and do not have any sequence or technical meaning. The "connection" and "connection" mention...

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Abstract

The invention relates to a self-destruction structure, an electrolyte, an electrode, a diaphragm and a battery. The self-destruction structure is used for being accommodated in a battery. The self-destruction structure includes a first shell and a chemical inhibitor. A first space is defined by the first shell. The chemical inhibitor is accommodated in the first space. The chemical inhibitor is used for inhibiting redox reaction during thermal runaway of the battery, and the gasification temperature of the chemical inhibitor is lower than the triggering temperature of thermal runaway of the battery. When the battery is overcharged, overheated and short-circuited, the redox reaction in the battery is accelerated, and a large amount of heat is generated. And the overall temperature of the self-destruction structure rises. The temperature of the chemical inhibitor in the self-destruction structure rises, and the gasification volume expands. The chemical inhibitor breaks through the firsthousing and diffuses to the battery electrolyte. And the chemical inhibitor is used for blocking the redox reaction during thermal runaway of the battery, so that the thermal runaway of the battery isrestrained, and the safety of the battery is improved. The self-destruction structure has important value for the safety design of the lithium ion battery with high specific energy.

Description

technical field [0001] The present application relates to the field of battery technology, in particular to a self-destruct structure, an electrolyte, an electrode, a diaphragm and a battery. Background technique [0002] When charging a lithium-ion battery, lithium ions are generated on the positive electrode of the battery, and the generated lithium ions move to the negative electrode through the electrolyte. The carbon used as the negative electrode has a layered structure, and it has many micropores. Lithium ions that reach the negative electrode are embedded in the micropores of the carbon layer. The more lithium ions are embedded, the higher the charging capacity. Similarly, when the battery is discharged (that is, the process in which we use the battery), the lithium ions embedded in the carbon layer of the negative electrode come out. Lithium ions move back to the positive electrode. The more lithium ions returned to the positive electrode, the higher the discharge...

Claims

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Application Information

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IPC IPC(8): H01M10/0567H01M4/62H01M4/13H01M2/16H01M10/0525H01M10/42
CPCH01M4/13H01M4/628H01M10/0525H01M10/0567H01M10/4235H01M2200/10Y02E60/10
Inventor 冯旭宁卢兰光王贺武韩雪冰欧阳明高
Owner TSINGHUA UNIV
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