fig7

Figure 7. The unipolar D-E loops of films measured at (A) 25 °C and (B) 150 °C, respectively. (B) Energy storage properties of films measured at (C) 25 °C and (D) 150 °C, respectively. (E) Comparison of energy storage properties of PEI/BST@CdS-2 with recently reported high-temperature composites measured at 150 °C^{[17,19,35,36,57-61]}.