A novel lead-free NaNbO3-Bi(Zn0.5Ti0.5)O-3 ceramics system for energy storage application with excellent stability
A novel lead-free NaNbO3-Bi(Zn0.5Ti0.5)O-3 ceramics system for energy storage application with excellent stability
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一种具有优异稳定性的新型无铅NaNbO3-Bi(Zn0.5Ti0.5)O-3陶瓷体系，用于储能应用
DOI：
10.1016/j.jallcom.2019.152356
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发表时间：
2020
影响因子：
6.2
通讯作者：
Zhou Shiyu
中科院分区：
文献类型：
--
作者：
Shi Ruike;Pu Yongping;Wang Wen;Guo Xu;Li Jingwei;Yang Mengdie;Zhou Shiyu
为了开发高功率的NaNbO_3基陶瓷储能材料，人们对NaNbO_3的AFE结构进行了大量的研究。然而，由于AFE和场致亚稳态Fe的共存，NaNbO_3陶瓷中出现了大P_i的正方形P-E环，这抑制了NaNbO_3基陶瓷的储能性能。本文采用传统的固相法制备了无铅(1-x)NaNbO_3-xBI(Zn0.5Ti0.5)O-3(简称(1-x)NN-xBZT)介电陶瓷。通过引入BZT，研究了(1-x)NN-xBZT陶瓷的结构、弛豫行为和储能性能。当x=0.09~0.12时，得到细长的P-E环，当x=0.09时，获得了最大的放电储能密度(W-rec=2.1J/cm(3))，同时获得了较高的储能效率(ETa=76%)。充放电测试表明，0.91NN-0.09BZT陶瓷具有较快的放电率(50 Ns)，且具有良好的温度稳定性和电场稳定性，保证了0.91NN-0.09BZT陶瓷在宽温区无铅电源系统中的应用前景。(C)2019爱思唯尔B.V.保留所有权利。
Many researches have been referred to the AFE structure of NaNbO3 in order to develop high power energy storage for NaNbO3-based ceramic. However, the square P-E loops with large P,- was observed in NaNbO3 ceramics due to the coexistence of AFE and the field-induced metastable FE, which suppress the energy storage property of NaNbO3-based ceramics. In the present work, lead-free (1-x)NaNbO3-xBi(Zn0.5Ti0.5)O-3 (abbreviated as (1-x)NN-xBZT) dielectric ceramics were prepared via the traditional solid-state route. The structures, relaxor behavior and energy storage property of (1-x)NN-xBZT ceramics were investigated with the introduction of BZT. The slim P-E loops were obtained while x = 0.09-0.12 and the maximum discharge energy storage density (W-rec = 2.1 J/cm(3)) was obtained while x = 0.09, meanwhile a high energy storage efficiency (eta= 76%) was achieved. Moreover, the charge-discharge tests show that 0.91NN-0.09BZT ceramics can achieve fast discharge rate (50 ns) and exhibit excellent stabilities of temperature and electric field, which guarantee the application prospect of 0.91NN-0.09BZT ceramics for lead-free plus power system in a wide temperature range. (C) 2019 Elsevier B.V. All rights reserved.