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Sandwich electrode and battery

An electrode, sandwich technology, used in batteries, battery electrodes, secondary batteries, etc.

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

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a sandwich electrode and battery for the problem of improving the safety of lithium ion batteries.

Method used

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  • Sandwich electrode and battery
  • Sandwich electrode and battery
  • Sandwich electrode and battery

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Embodiment Construction

[0040] In order to make the above objects, features and advantages of the present application more clearly understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, 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.

[0041] The sequence numbers themselves, such as "first", "second", etc., for the components herein are only used to divide the described objects, and do not have any order or technical meaning. The "connection" and "connection" mentioned in this application, unl...

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Abstract

The invention relates to a sandwich electrode and a battery. The sandwich electrode includes an electrode shell and a chemical inhibitor. A first space is defined by the electrode shell. The chemicalinhibitor is accommodated in the first space. The gasification temperature of the chemical inhibitor is lower than the triggering temperature of thermal runaway of the battery. Before the battery is subjected to thermal runaway, the chemical inhibitor is gasified and expanded and breaks through the electrode shell. The chemical inhibitor diffuses to the battery electrolyte. The chemical inhibitoris used for inhibiting oxidation-reduction reaction during thermal runaway of the battery, so that the rate of heat generated in the battery is reduced, and heat accumulation is avoided. And furthermore, the sandwich electrode improves the safety of the battery.

Description

technical field [0001] The present application relates to the field of battery technology, in particular to a sandwich electrode and a battery. Background technique [0002] When the lithium ion battery is charged, 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 as the negative electrode has a layered structure, and it has many micropores. The lithium ions reaching the negative electrode are embedded in the micropores of the carbon layer. The more lithium ions are embedded, the higher the charging capacity. Likewise, 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 are extracted. Lithium ions move back to the positive electrode. The more lithium ions returned to the positive electrode, the higher the discharge capacity. [0003] The safety of lithium ...

Claims

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Application Information

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