Long-acting energy storage capacitor based on giant dielectric ceramic material

Abstract

The invention discloses a long-acting energy storage capacitor based on a giant dielectric ceramic material, and belongs to the technical field of energy storage devices. The long-acting energy storage capacitor based on the giant dielectric ceramic material comprises a first solid-state phase and a second solid-state phase, at least one of the first solid-state phase and the second solid-state phase is provided with a giant dielectric ceramic layer, and the giant dielectric ceramic layer is arranged on a collector electrode; and an electrolyte layer is arranged between the first solid-state phase and the second solid-state phase, and a diaphragm is arranged in the electrolyte layer. The large-capacity long-acting energy storage capacitor can be prepared on the basis of the giant dielectric ceramic material, and the problem that a traditional physical capacitor is difficult to store charges for a long time due to fast self discharge caused by self volume resistance is solved.

Description

technical field [0001] The invention relates to a technology in the field of electric energy storage devices, in particular to a long-term energy storage capacitor based on giant dielectric ceramic materials. Background technique [0002] In new technology fields such as electric vehicles, photovoltaic power stations, energy storage power stations, and mobile electronic devices, lithium batteries are the main energy storage devices. The theoretical maximum energy storage capacity density of lithium batteries is about 300Wh / kg, and the current technology is already close to this theory. value, but compared with petroleum energy gasoline, the volume and weight are too large, and the charging (charging) time is long, which cannot meet the requirements of fast charging and long battery life of large-capacity batteries, and there is still a long way to go to replace petroleum energy. ; Coupled with the lack of global lithium resources, it is difficult for lithium batteries to be ...

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Problems solved by technology

[0005] As mentioned above, R&D personnel from all over the world have conducted quite in-depth research on giant dielectric ceramic materials, reaching the theoretical energy storage capacity density (300-1000Wh / kg) of giant dielectric ceramic capacitors; however, like EEStor, Even if the volume resistance is developed to reach 10 12 Ω·cm and giant dielectric ceramic materials with high electric strength, but the inherent fast self-discharge (leakage) speed of physical capacitors makes it difficult to save electricity for a long time. bottleneck

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