Electrolyte and electrochemical device and electronic device including electrolyte

An electrolyte and nitrile compound technology, applied in the field of energy storage, can solve problems such as flatulence of lithium-ion batteries

Active Publication Date: 2022-04-15
NINGDE AMPEREX TECH
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  • Description
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Problems solved by technology

However, with the continuous expansion of the application of lithium-ion batteries and the continuous development of modern information technology, people have higher and higher requirements for the performance of lithium-ion batteries. In addition to the most widely concerned high-temperature storage performance, high-current charge and discharge cycles are also required , and there is a risk of flatulence in lithium-ion batteries after high-current charge-discharge cycles

Method used

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  • Electrolyte and electrochemical device and electronic device including electrolyte
  • Electrolyte and electrochemical device and electronic device including electrolyte
  • Electrolyte and electrochemical device and electronic device including electrolyte

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preparation example Construction

[0101] The positive electrode can be prepared by a preparation method known in the art. For example, the positive electrode may be obtained by mixing an active material, a conductive material, and a binder in a solvent to prepare an active material composition, and coating the active material composition on a current collector. In some embodiments, the solvent may include N-methylpyrrolidone and the like, but is not limited thereto.

[0102] In some embodiments, the positive electrode is made by forming a positive electrode material using a positive electrode active material layer including lithium transition metal compound powder and a binder on a current collector.

[0103] In some embodiments, the positive electrode active material layer can generally be made by performing the following operations: dry mixing the positive electrode material and the binder (conductive material and thickener used as needed) to make a sheet, and The obtained sheet is pressure-bonded to the po...

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Abstract

The present application relates to an electrolytic solution and an electrochemical device and an electronic device including the electrolytic solution. The electrolyte includes silazane and additive A, wherein silazane contains two silicon-nitrogen bonds, and additive A includes 1,3,2-dioxazolethiophene-2,2-dioxide, succinic anhydride, methanedisulfone at least one of methylene phosphate and lithium difluorophosphate. The electrolyte solution contains silazane and the additive A as a combined additive, which can improve the high-temperature storage performance of the electrochemical device and alleviate the expansion after a high-current charge-discharge cycle.

Description

technical field [0001] The present application relates to the technical field of energy storage, and in particular to an electrolyte and an electrochemical device and an electronic device including the electrolyte. Background technique [0002] Resource shortage, energy crisis and environmental pollution are severe challenges facing human production at present. Finding clean, renewable and resource-saving secondary energy is one of the urgent tasks to be solved for the sustainable development of human society. Lithium-ion batteries are a new generation of green and environmentally friendly batteries developed in the 1990s. They have the advantages of high voltage, high specific energy, long cycle life, environmental friendliness, safety, and no memory effect. They are widely used in wearable devices, Smartphones, laptops, drones, power tools, and even electric cars. However, with the continuous expansion of the application of lithium-ion batteries and the continuous develop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0567H01M10/0525
CPCH01M10/0567H01M10/0525H01M2300/0025Y02E60/10
Inventor 张水蓉马娟张丽兰郑建明
Owner NINGDE AMPEREX TECH
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