Porous ceramic diaphragm slurry and preparation method thereof, battery diaphragm and battery

A technology of porous ceramics and battery separators, which is applied in battery pack parts, circuits, electrical components, etc., can solve the problems that the electrolyte cannot effectively increase the liquid retention capacity, the electrolyte adsorption effect is small, and the battery liquid retention capacity cannot be improved. Achieve the effect of increasing cycle life, reducing diaphragm resistance, and ensuring heat resistance
CN109742298APending Publication Date: 2019-05-10SOUNDON NEW ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUNDON NEW ENERGY TECH CO LTD
Publication Date
2019-05-10

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Abstract

The invention relates to porous ceramic diaphragm slurry and a preparation method and application thereof. The preparation method comprises the following steps: corroding ceramic powder by using hydrofluoric acid to obtain porous ceramic powder, wherein the ceramic powder is made of at least two ceramic materials; mixing the porous ceramic powder and hydrochloric acid or nitric acid to perform activation so as to obtain activated porous ceramic powder; cladding a surface of the activated porous ceramic powder by using silane coupling agent to obtain sensitive porous ceramic powder; mixing thesensitive porous ceramic powder with adhesive and organic solvent, uniformly stirring to obtain the porous ceramic diaphragm slurry. The ceramic powder prepared from a plurality of ceramic materials is corroded through the hydrofluoric acid, the porous ceramic powder which is the porous structure is manufactured by utilizing the corrosion speed difference on different types of ceramic materials byutilizing the hydrofluoric acid, the porous ceramic powder obtains the porous ceramic diaphragm slurry through activation, sensitization and like treatment; the porous ceramic diaphragm slurry can obviously improve the electric performance of the battery.
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Description

technical field

[0001] The invention relates to the technical field of batteries, in particular to a porous ceramic diaphragm slurry and a preparation method thereof, a battery diaphragm and a battery. Background technique

[0002] With the lack of non-renewable energy and the control of environmental pollution by the whole society, the development of new energy has become an irresistible trend. Lithium-ion batteries have been widely used in the fields of electric vehicles and energy storage because of their advantages such as large specific energy, light weight, good cycle life, low self-discharge rate, no memory effect, and environmental friendliness. With the continuous expansion of the application range of lithium-ion batteries, various industries have put forward more stringent requirements on the performance of lithium-ion batteries, such as the increase of battery capacity, the increase of battery cycle life and the improvement of battery safety performance. Soft-pac...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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