Lead-free ferroelectric ceramics of (1-x)Ba_0.98Li_0.02TiO₃-xBi(Mg_1/2Sn_1/2)O₃ (abbreviated as (1-x)BLT-xBMS, x = 0, 0.02, 0.04, 0.05, 0.06, 0.08) were synthesized through conventional solid-state sintering method. The effects of Bi(Mg_1/2Sn_1/2)O₃ addition on the phase transition, microstructure, the dielectric properties and the energy storage properties were investigated. All the BLT-BMS samples exhibited single phase perovskite structure. XRD and Roman spectrum confirmed the coexistence of the orthorhombic phase and tetragonal phase in the samples with x = 0.00–0.05, which turned to the coexistence of orthorhombic and cubic phase in the samples with x > 0.05. All the samples display dense microstructures with clear grain boundaries. The average grain size of the samples increases and the relaxor characteristics become stronger with the addition of BMS. The existence of orthorhombic phase apparently promotes the energy storage performance. The maximum energy density of 0.16 J/cm³ and the largest energy efficiency of 70.42% were achieved with orthorhombic/tetragonal ratio of 53/47 at x = 0.05.

(1-x)Ba _0.98 Li _0.02 TiO ₃ -xBi(Mg _1/2 Sn _1/2 )O ₃ (缩写为(1-x)BLT-xBMS, x = 0, 0.02, 0.04 )的无铅铁电陶瓷, 0.05, 0.06, 0.08)是通过传统的固态烧结方法合成的。Bi(Mg _1/2 Sn _1/2 )O _{3 的影响}此外，还研究了相变、微观结构、介电性能和储能性能。所有 BLT-BMS 样品都表现出单相钙钛矿结构。XRD和罗马光谱证实x=0.00-0.05的样品中正交相和四方相共存，在x>0.05的样品中转变为正交相和立方相共存。所有样品均显示出具有清晰晶界的致密微观结构。随着 BMS 的加入，样品的平均晶粒尺寸增加，弛豫特性变得更强。正交相的存在明显促进了储能性能。最大能量密度 0.16 J/cm ³ 在 x = 0.05 处，正交/四方比为 53/47 时实现了 70.42% 的最大能量效率。