Preparation method of flexible energy storage film

Abstract

The invention relates to a preparation method of a flexible energy storage film. The preparation method comprises the following steps: providing a flexible metal substrate; using titanium metal as a target material, and forming a titanium dioxide prefabricated layer on the flexible metal substrate by a magnetic filtered multi-arc ion plating method, wherein the magnetic filtered multi-arc ion plating method adopts oxygen-containing protective gas as a working atmosphere; and thermally processing the flexible metal substrate with the titanium dioxide prefabricated layer to obtain the flexible energy storage film. The preparation method not only realizes the flexible modification of the energy storage film, but also enables the energy storage film to have high reliability and high energy storage density, so that the flexible energy storage film can be used as a dielectric material of a film capacitor.

Description

[0001] This application is a divisional application of the invention application of "application number: 201810829735.3, application date is July 25, 2018, title: flexible energy storage film and its preparation method, and film capacitor". technical field

[0002] The invention relates to the field of energy, in particular to a preparation method of a flexible energy storage film. Background technique

[0003] With the gradual development of electronic equipment towards miniaturization, multi-function and light weight, the electronic components that make up electronic equipment also need to develop towards the trend of miniaturization, light weight, high integration and multi-function.

[0004] For film capacitors, the ideal way to achieve miniaturization is to increase the dielectric constant of the dielectric film to increase the capacitance. Dielectric films mainly include polymer energy storage films and ceramic energy storage films. In traditional film capacitors, the ...

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