Professor Cheng Yonghong, a professor from Xi'an Jiaotong University, started from the common easy-to-process and low-cost dielectric material-epoxy resin, by studying the influence of the molecular structure characteristics, the polarization mechanism under the macro electric field and the high-temperature energy storage performance Mechanism, designed asymmetric polyetheramine-alicyclic amine molecular chain structure, and based on the most widely used bisphenol A type epoxy resin in industry, synthesized a high temperature resistant flexible epoxy film. The results were published online in "Chemical Engineering" recently.
Organic thin-film capacitors have become important power-type energy storage devices due to their ultra-fast charge and discharge speeds, extremely high power density, high operating voltage, and low losses. They are used in intelligent distribution network energy storage, direct current transmission, and new energy vehicles. DC conversion and other fields have played an important role. With the increasing load of power-type power electronic equipment and the trend of miniaturization and integration, the operating temperature of thin film capacitors will continue to rise. Therefore, the development of organic thin film capacitors with high energy storage density, high energy storage efficiency, and high operating temperature is of great significance for further improving the stability and reliability of the power grid. However, subject to factors such as cost, processability, and stable reliability, the high-performance thin-film capacitor materials currently developed are difficult to achieve industrial application. The new film developed by Cheng Yonghong and others not only has low cost, excellent heat resistance and mechanical properties, but also has excellent energy storage performance.
According to the experts of the research group, the test shows that the material can not only run stably at 120 ℃ for a long time, but also has excellent breakdown self-healing performance, which can ensure its stability and reliability in industrial applications. (Reporter Zhang Xingyong)
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