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Electrolyte, electrochemical device including same, and electronic equipment

An electrolyte and compound technology, applied in the field of energy storage, can solve problems such as battery performance deterioration, achieve the effects of improving stability, improving high-temperature cycle performance and high-temperature storage performance, and reducing side reactions

Active Publication Date: 2021-04-23
NINGDE AMPEREX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, mobile phones or notebook computers are an important direction of consumer electronics products. In actual use, it is more common for notebook computers to be charged while using them. However, this working condition is likely to cause battery performance to deteriorate.

Method used

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  • Electrolyte, electrochemical device including same, and electronic equipment
  • Electrolyte, electrochemical device including same, and electronic equipment
  • Electrolyte, electrochemical device including same, and electronic equipment

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preparation example Construction

[0083] The preparation method of the electrolyte in the embodiment of the present application is not limited, and can be prepared in a conventional manner. In some embodiments, the electrolyte solution of the present application can be prepared by mixing the components.

[0084] [Electrochemical device]

[0085] The electrochemical device of the present application includes any device that undergoes an electrochemical reaction, and its specific examples include all kinds of primary batteries, secondary batteries, fuel cells, solar cells, or capacitors. In particular, the electrochemical device is a lithium secondary battery including, but not limited to, a lithium metal secondary battery, a lithium ion secondary battery, a lithium polymer secondary battery or a lithium ion polymer secondary battery. The electrochemical device of the present application is an electrochemical device with a positive electrode having a positive electrode active material capable of occluding and r...

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Abstract

The invention relates to the technical field of energy storage, and especially relates to an electrolyte, an electrochemical device including the same, and electronic equipment. The electrolyte comprises cyclic dicarboxylic acid ester, and a compound containing 2 to 4 cyano groups. According to the electrolyte, a stable and effective solid electrolyte interface film can be formed between the positive electrode and the negative electrode through the synergistic effect of the cyclic dicarboxylic ester and the compound containing the 2 to 4 cyano groups, and the side reaction of the electrolyte with the positive electrode and the negative electrode is reduced. When the electrochemical device is stored and circulated at a high temperature, the electrolyte can effectively improve the high-temperature cycle performance and the high-temperature storage performance of the electrochemical device.

Description

technical field [0001] The present application relates to the technical field of energy storage, and more specifically, to an electrolyte solution and an electrochemical device and electronic equipment containing it. Background technique [0002] Electrochemical devices (such as lithium-ion batteries) have the advantages of high energy density, long cycle life, light weight, high operating voltage, high output power, and environmental friendliness, and are widely used in mobile phones, computers, wearable devices, consumer-grade unmanned Machines, electric tools, electric motorcycles, electric vehicles, large energy storage devices and other fields, especially in electronic consumer products are more widely used. Among them, mobile phones or notebook computers are an important direction of electronic consumer products. In actual use, it is more common for notebook computers to be charged while using them. However, this working condition is likely to cause battery performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M10/0525H01M10/42
CPCH01M10/0525H01M10/0565H01M10/4235Y02E60/10
Inventor 张水蓉张丽兰唐超
Owner NINGDE AMPEREX TECH
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