Sandwich electrodes and batteries

An electrode and sandwich technology, applied in the direction of batteries, battery electrodes, secondary batteries, etc.

Active Publication Date: 2021-09-14
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 electrodes and batteries
  • Sandwich electrodes and batteries
  • Sandwich electrodes and batteries

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Embodiment Construction

[0040] 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.

[0041] 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 application relates to a sandwich electrode and a battery. The sandwich electrode includes an electrode casing and a chemical inhibitor. The electrode casing encloses a first space. The chemical inhibitor is accommodated in the first space. The gasification temperature of the chemical inhibitor is lower than the trigger temperature of the thermal runaway of the battery. The chemical inhibitor vaporizes and expands, breaking through the electrode casing before thermal runaway of the battery occurs. The chemical inhibitor diffuses into the battery electrolyte. The chemical inhibitor is used to inhibit the oxidation-reduction reaction when the battery is thermally out of control, reduces the heat generation rate inside the battery, and avoids heat accumulation. Furthermore, the sandwich electrode improves the safety of the battery.

Description

technical field [0001] The present application relates to the technical field of batteries, in particular to a sandwich electrode 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 capacity. [0003] The safety of lithium batt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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