Study on energy storage mechanism of polymer composite materials based on band structure

Polymer capacitors are widely used in the field of electrical engineering, but their improved conductivity in high-temperature environments leads to significant energy loss and a sharp decline in energy storage performance. To address this issue, this article explores the methods and mechanisms for improving high-temperature energy loss in polymer composites based on interface band structures. By adjusting the band structure, the interface barrier height and charge distribution between the electrode and polymer film is revealed. Based on the performance testing results, the high-temperature energy loss suppression method for composite is proposed and its suppression mechanism is elucidated, providing experimental and theoretical basis for the dielectric with excellent performance.