Optimization of polarization behavior in (1-x)BSBNT-xNN ceramics for pulsed power capacitors
Optimization of polarization behavior in (1-x)BSBNT-xNN ceramics for pulsed power capacitors
复制标题
脉冲功率电容器 (1-x)BSBNT-xNN 陶瓷极化行为的优化
DOI：
10.1039/d0tc01699c
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发表时间：
2020
影响因子：
6.4
通讯作者：
Li Yueming
中科院分区：
文献类型：
--
作者：
Li Dongxu;Shen Zong-Yang;Li Zhipeng;Luo Wenqin;Song Fusheng;Wang Xingcai;Wang Zhumei;Li Yueming
选择反铁电NaNbO 3（NN）来改性成分优化的BNT基弛豫铁电陶瓷（Ba0.3Sr0.7）0.35（Bi0.5Na0.5）0.65TiO3（BSBNT），其具有式（1-x）BSBNT-xNN，其中x = 0、0.02、0.04、0.06、0.08和0.10。所有致密的陶瓷都是一个纯粹的伪立方相，并表现出很强的弛豫特性。对于0.94BSBNT-0.06NN陶瓷，由于极化行为的优化，在室温下获得了Wrec = 1.25 J cm-3的高可恢复能量密度。温度相关的P-E磁滞回线测量和欠阻尼和过阻尼电路条件下的快速充放电测试均表明其储能性能具有较好的温度稳定性。0.94BSBNT-0.06NN陶瓷具有良好的循环可靠性，可达105次循环，具有很大的潜力，固态紧凑型脉冲功率电容器。
Antiferroelectric NaNbO3 (NN) is chosen to modify a compositionally optimized BNT-based relaxor ferroelectric ceramic, (Ba0.3Sr0.7)0.35(Bi0.5Na0.5)0.65TiO3 (BSBNT), having the formula (1 − x)BSBNT–xNN, in which x = 0, 0.02, 0.04, 0.06, 0.08, and 0.10. All dense ceramics are indexed to a pure pseudocubic phase and show strong relaxor characteristics. For the 0.94BSBNT–0.06NN ceramic, a high recoverable energy density of Wrec = 1.25 J cm−3 is obtained at room temperature due to an optimization of the polarization behavior. The temperature dependent P–E hysteresis loop measurement and the fast charge–discharge test under underdamped and overdamped circuit conditions both demonstrate its relatively good temperature stability of energy storage properties. Together with excellent cycling reliability up to 105 cycles, the 0.94BSBNT–0.06NN ceramic has much potential for solid state compact pulsed power capacitors.