(1−x)[0.94Bi_0.5Na_0.5TiO₃ – 0.06BaTiO₃]−xLa_0.33NbO₃ (x = 0, 0.02, 0.04, 0.06, 0.08, 0.10) (BNBT-LN) bulk lead-free relaxor ferroelectric ceramics were synthesized via solid-state sintering method. Phase, microstructure and energy storage properties were determined. The X-ray diffraction (XRD) revealed a single perovskite phase for compositions of x ≤ 0.02, while the second phase of Bi₂Ti₂O₇ along with the parent phase for x ≥ 0.04. Dense microstructure with a decrease in grain size has been achieved via LN doping. The addition of LN decreased the remnant polarization (P_r), and coercive field (E_c), while increased the difference between the maximum polarization (P_max) and remnant polarization (P_r). The high energy-storage density of 2.96 J/cm ³ and high recoverable energy density of 1.66 J/cm³ at a breakdown electric field of 214 kV/cm were achieved for the composition of x = 0.02 with good temperature stability satisfying the condition of Δε_r /ε _{r200 °C} ≤ ± 15% in a working temperature range of 70 °C to 400 °C. Similarly, a less discharge time of < 4 µs achieved in this study for x = 0.02. These results demonstrate that this material may be a good candidate material for power pulsed applications.

（1- x）[0.94Bi _0.5 Na _0.5 TiO ₃  – 0.06BaTiO ₃ ] -x La _0.33 NbO ₃ （x  = 0，0.02，0.04，0.06，0.08，0.10 ）（BNBT-LN）块状无铅弛豫铁电体通过固态烧结法合成陶瓷。确定了相，微结构和储能性能。的X射线衍射（XRD）表明单一钙钛矿相对于组合物X  ≤0.02，而Bi的第二相₂的Ti ₂ ö ₇ 沿与母相X ≥0.04。通过LN掺杂已经实现了具有减小的晶粒尺寸的致密的微观结构。LN的添加减少了剩余极化（P _r）和矫顽场（E _c），同时增加了最大极化（P _max）和剩余极化（P _r）之间的差。对于x = 0.02的组合物，在满足条件的条件下，具有良好的温度稳定性，在214 kV / cm的击穿电场下实现了2.96 J / cm  ^3的高储能密度和1.66 J / cm ^3的高可回收能量密度。 Δε _{- [R}  /ε  _R200℃下 在70°C至400°C的工作温度范围内，≤±15％。同样，对于x = 0.02 ，此研究中的放电时间小于4 µs 。这些结果表明，该材料可能是功率脉冲应用的良好候选材料。