Energy storage polymer dielectric and preparation method and application thereof
A polymer and dielectric technology, applied in the direction of fixed capacitor dielectric, fixed capacitor parts, etc., can solve the problems of efficiency drop, loss increase, etc., and achieve the effect of small temperature rise, dense uniformity, and easy control of preparation parameters
Inactive Publication Date: 2021-10-12
TSINGHUA UNIV +1
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Problems solved by technology
These methods often lead to increased loss and decreased efficiency while increasing energy storage density.
Method used
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Embodiment 1
[0041] Using polyetherimide dielectric film as the base material (purchased from Polyk, USA), ultrasonically removed impurities and dirt on the surface in alcohol; company) for magnetron sputtering with a distance of 10 cm between target and substrate in Ar and O 2 (40:4) In the mixed atmosphere, magnetron sputtering was used to deposit Al2O3 on the surface of the film, and the working pressure was 0.5Pa; the sputtering time was adjusted according to the thickness, and the sputtering thickness was 150nm; the sputtering power was 200W . Metal oxide thin films were deposited on both sides of the original polymer dielectric base film to obtain energy storage polymer dielectric samples.
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Abstract
The invention discloses an energy storage polymer dielectric as well as a preparation method and application thereof. The energy storage polymer dielectric comprises a polymer dielectric base film and a metal oxide thin film. The preparation method comprises the following steps of cleaning the dielectric medium film in advance, and depositing the metal oxide film on the clean polymer dielectric base film in a mixed atmosphere of Ar and O2 by taking a metal oxide as a target material and adopting magnetron sputtering. The method for preparing the energy storage polymer dielectric and improving the charging and discharging efficiency has the following advantages that the deposition rate is high, the temperature rise is small, and damage to the polymer dielectric base film is small; the bonding property of the sputtered film and the polymer dielectric medium is good; the sputtered metal oxide is high in purity, compact in film formation and good in uniformity; and compared with an original base film, the composite energy storage dielectric prepared after sputtering has the advantages that the charging and discharging efficiency is greatly improved, and the breakdown strength is also improved. The technology has good repeatability, film preparation parameters are easy to adjust, and the technology has the potential of achieving industrialization.
Description
technical field [0001] The present invention relates to the field of energy storage polymer dielectrics, and in particular, the present invention relates to energy storage polymer dielectrics with high breakdown strength and charge-discharge efficiency, and a preparation method and application thereof. Background technique [0002] Every update to energy control and use drives profound changes in human society. Especially after the second industrial revolution, the use of electric energy has brought human society into the "electric age". Electric energy has the following characteristics: it is ready to use and not easy to store. Capacitors can store electrical energy in the form of electrostatic energy by means of polarization, because of their high power density due to the characteristics of polarization energy storage. Moreover, as an important passive device, the capacitor regulates the flow of energy and the transmission of information in the power system and various e...
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IPC IPC(8): H01G4/18H01G4/10
CPCH01G4/18H01G4/10
Inventor 党智敏裴家耀钟少龙
Owner TSINGHUA UNIV
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