Bi0·5K0·5TiO3-based lead-free relaxor ferroelectric with high energy storage performances via the grain size and bandgap engineering

Breaking the Mutual Constraint between Polarization and Voltage Resistance with Nanograined High-Entropy Ceramic

“…As shown in Figure 4(a), the BKBSC-0.2Cu ceramic shows fine grains (average size of about 304 nm) as well as a uniformly dense structure, attributed to the hysteresis diffusion effect characteristic of high-entropy material. 23 and the effect of the sintering aid CuO to lower the sintering temperature, 42 which is in strong agreement with the scanning electron microscopy results (see Figure S4, Supporting Information). The magnifying image in Figure 4(b,c) further verifies the excellent microstructure, including fine grains and tightly bonded grain boundaries.…”

Significantly Enhanced Energy Storage Performance in High Hardness BKT-Based Ceramic via Defect Engineering and Relaxor Tuning

“…(a–f) P–E hysteresis loop of BKTBFO-0.16NSN ceramic under the different electric fields. (g) Development of BKT-based energy storage ceramics. ,,,− (h) Comparison of BKTBFO-0.16NSN ceramics with other lead-free energy storage ceramics. ,,,,,− (i) Underdamped discharge curves of BKTBFO-0.16NSN ceramic measured at different electric fields. (j) I max , C D , and P D as a function of electric field.…”

Achieving ultrahigh energy storage density and efficiency in 0.90NaNbO3–0.10BaTiO3 ceramics via a composition modification strategy

“…Compared with ferroelectric domains, PNRs can change rapidly with the inversion of the electric field, and thus the P-E hysteresis loop is refined, which promotes the improvement of energy storage efficiency. 43,44 Fig. 4(c) shows the W rec , W, and η values of NNBT-xBLMT ceramics at 230 kV cm −1 .…”