fig7
![BaTiO<sub>3</sub>-NaNbO<sub>3</sub> energy storage ceramics with an ultrafast charge-discharge rate and temperature-stable power density](https://image.oaes.cc/efb6495c-8b6f-4a10-8ed1-597e4de0f80e/5271.fig.7.jpg)
Figure 7. (A) Unipolar P-E loops of 0.60BT-0.40NN ceramics measured under 19 MV m-1 at various frequencies, (C) under 15 MV m-1 at different cycles and (E) under 20 MV m-1 at various temperatures. Corresponding (B) frequency-dependent, (D) fatigue-dependent and (F) temperature-dependent energy storage properties.