Enhanced energy storage properties of a novel lead-free ceramic with a multilayer structure†,Journal of Materials Chemistry C

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Enhanced energy storage properties of a novel lead-free ceramic with a multilayer structure†
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2018-07-05 00:00:00 , DOI: 10.1039/c8tc02368a
Fei Yan _{1,

2,

3,

4} , Haibo Yang _{1,

2,

3,

4} , Lin Ying _{1,

2,

3,

4} , Tong Wang _{1,

2,

3,

4}

Affiliation

A (SrTiO₃ + Li₂CO₃)/(0.94Bi_0.54Na_0.46TiO₃ − 0.06BaTiO₃) (STL/BNBT) lead-free ceramic with a multilayer structure was shaped via the tape-casting and subsequent lamination technique, and sintered using the conventional solid state sintering method. The dielectric constant of the ceramic is larger than that of pure STL or BNBT and reveals excellent frequency-stability, and the dielectric loss is smaller than 0.15 for the STL/BNBT multilayer ceramic at 1 kHz–1 MHz and room temperature. Meanwhile, dielectric measurement results reveal that the STL/BNBT multilayer ceramic possesses relaxor behavior. In addition, the STL/BNBT multilayer ceramic possesses large maximum polarization (P_max) and low remnant polarization (P_r). An optimal energy storage density (W) of 3.55 J cm⁻³ and a recoverable energy storage density (W_rec) of 2.41 J cm⁻³ can be obtained under 237 kV cm⁻¹ for the STL/BNBT multilayer ceramic. Numerical simulations based on the finite element analysis method present the breakdown process vividly and agree well with the experimental results. Moreover, the energy storage properties of STL/BNBT multilayer ceramic exhibit excellent frequency stability and temperature stability. The STL/BNBT multilayer structure significantly enhances the electric breakdown strength (E_b) and energy storage properties of lead-free ceramics for pulsed power system applications.

中文翻译：

具有多层结构的新型无铅陶瓷的增强的储能性能†

A（的SrTiO ₃ +栗₂ CO ₃）/（0.94Bi _0.54钠_0.46的TiO ₃ - 0.06BaTiO ₃）（STL / BNBT）无铅陶瓷的多层结构被形通过采用流延铸造和随后的层压技术，并使用常规的固态烧结方法进行烧结。陶瓷的介电常数大于纯STL或BNBT的介电常数，并显示出出色的频率稳定性，并且在1 kHz–1 MHz和室温下，STL / BNBT多层陶瓷的介电损耗小于0.15。同时，介电测量结果表明，STL / BNBT多层陶瓷具有弛豫性能。另外，STL / BNBT多层陶瓷具有大的最大极化率（P _max）和低的剩余极化率（P _r）。最佳储能密度（W）为3.55 J cm ^-3且可回收储能密度（W对于STL / BNBT多层陶瓷，可以在237 kV cm^-1下获得2.41 J cm^-3的_rec）。基于有限元分析方法的数值模拟生动地描述了击穿过程，并且与实验结果吻合良好。此外，STL / BNBT多层陶瓷的储能性能表现出出色的频率稳定性和温度稳定性。STL / BNBT多层结构显着提高了脉冲电源系统应用中无铅陶瓷的击穿强度（ E _b）和储能性能。

更新日期：2018-07-05

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