The advancement of electronics and hybrid vehicles demands improved performance from polymer dielectrics, but their energy density drops due to leakage currents and losses at high temperatures and electric fields.
γ phase GaO nanoplates were synthesized and added to a polyimide matrix to enhance dielectric properties by introducing traps that reduce charge flow and leakage.
The resulting nanocomposite showed a high discharge energy density and breakdown strength at elevated temperatures, alongside impressive stability over many cycles, promising a new approach for capacitive energy storage in harsh environments.