Electrochemical device and electronic device including same

An electrochemical and content technology, applied in the field of energy storage, can solve the problems of edge thickness thinning and negative impact

Pending Publication Date: 2022-02-15
NINGDE AMPEREX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, limited by the production process, the problem of edge thickness thinning caused by this coating method is unavoidable, which has a negative impact on the performance of electrochemical devices, especially the cycle performance.

Method used

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  • Electrochemical device and electronic device including same
  • Electrochemical device and electronic device including same
  • Electrochemical device and electronic device including same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0094] The performance evaluation of the examples and comparative examples of the lithium-ion battery according to the present application will be described below.

[0095] 1. Preparation of lithium ion battery

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Abstract

The invention relates to an electrochemical device and an electronic device comprising the same. Specifically, the invention provides an electrochemical device which comprises a negative electrode and an electrolyte, the negative electrode comprises a negative electrode current collector and a negative electrode active material layer arranged on at least one surface of the negative electrode current collector, the negative electrode active material layer comprises a first region and a second region, the thickness of any position of the first region is smaller than the average thickness of the second region, and the electrolyte contains a specific content of a salt having a P-O bond. The electrochemical device of the present application has excellent cycle performance.

Description

technical field [0001] The present application relates to the technical field of energy storage, in particular to an electrochemical device and an electronic device including the same, especially to a lithium-ion battery. Background technique [0002] Electrochemical devices (e.g., lithium-ion batteries) have been widely used in smart products (including mobile phones) due to their advantages such as high energy density, high operating voltage, light weight, low self-discharge rate, long cycle life, no memory effect, and environmental friendliness. , notebooks, cameras and other electronic products), electric vehicles, power tools, drones, intelligent robots and large-scale energy storage and other fields and industries. However, with the rapid development of information and communication technology and the diversification of market demand, people have put forward more requirements and challenges for the power supply of electronic products, such as thinner, lighter, more div...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/13H01M10/0525H01M10/0568H01M10/058H01M10/0567H01M10/42
CPCH01M4/13H01M10/0525H01M10/0568H01M10/058H01M10/0567H01M10/4235Y02E60/10Y02P70/50
Inventor 刘俊飞唐超
Owner NINGDE AMPEREX TECH
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