Structure and energy storage performance of lanthanide elements doped AgNbO3 lead-free antiferroelectric ceramics
Structure and energy storage performance of lanthanide elements doped AgNbO3 lead-free antiferroelectric ceramics
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镧系元素掺杂AgNbO3无铅反铁电陶瓷的结构与储能性能
DOI：
10.1016/j.jeurceramsoc.2021.12.074
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发表时间：
2021-12
影响因子：
5.7
通讯作者：
Nengneng Luo
中科院分区：
文献类型：
--
作者：
Li Ma;Zhenpei Chen;Zhiyi Che;Qin Feng;Zhenyong Cen;Toyohisa Fujita;Yuezhou Wei;Changzheng Hu;Laijun Liu;Nengneng Luo
·与原始AgNbO 3相比，在所有镧系元素离子掺杂的ReAN样品中实现了明显增强的AFE稳定性。·镧系离子可以进入A或B位点，导致AFE稳定性和耐受因子的复杂变化。·在250 kV/cm下，对于从SmAN到TbAN的组合物，Wrec和η分别达到约4.5 J/cm 3和65%。·对AgNbO 3系稀土元素掺杂的研究提供了一个全面的认识。银酸盐（AgNbO 3，AN）反铁电材料的A位异价改性在提高其储能性能方面已取得了一定的进展，但对其认识还不够全面。本文研究了3mol%镧系元素（Re：Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm）对AgNbO 3（ReAN）陶瓷的改性。与纯AN相比，ReAN陶瓷的M1-M2相变温度降低，并出现典型的类双P-E环。由于容差因子的减小，反铁电性先从SmAN提高到TbAN，然后由于部分Re 3+离子进入B位，反铁电性随原子序数的增加而衰减。在250 kV/cm电压下，SmAN到TbAN的混合物可获得高的能量密度（W rec = 4.5J/cm 3）和效率（η = 65%）.而随着原子序数的增加，W_（rec）和η普遍降低。本研究对AgNbO 3系镧系元素的掺杂有了较全面的认识.
• Evidently enhanced AFE stability is achieved in all lanthanide ions doped ReAN samples compared to pristine AgNbO 3 . • Lanthanide ions can enter either A- or B-site, leading to a complex change of AFE stability and tolerance factor. • Wrec and η are achieved to be respective around 4.5 J/cm 3 and 65 % for compositions from SmAN to TbAN under 250 kV/cm. • This study provides a comprehensive knowledge of lanthanide element dopants in AgNbO 3 system. The aliovalent A-site modification in Silver niobate (AgNbO 3 , AN) antiferroelectrics has exhibited its advances in improving energy storage performance, but lack of a comprehensive understanding. In this work, 3 mol% lanthanide elements (Re: Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm) modified AgNbO 3 (ReAN) ceramics were investigated. Compared with pristine AN, the ReAN ceramics exhibited decreased M1-M2 phase transition temperature and typical double-like P - E loops. The antiferroelectricity improved firstly from SmAN to TbAN because of reduction of tolerance factor, then it decayed with increasing atomic number due to partial Re 3+ ions entering into B-site. Consequently, high recoverable energy density ( W rec ≈ 4.5 J/cm 3 ) and efficiency ( η ≈ 65 %) were achieved for the compositions from SmAN to TbAN under 250 kV/cm. While a general decrease in W rec and η was observed by further increasing atomic number. This study provides a comprehensive knowledge of lanthanide element dopants in AgNbO 3 system.
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影响因子：
17.6
作者：
Lu, Zhilun;Bao, Weichao;Reaney, Ian M.
通讯作者：
Reaney, Ian M.
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作者：
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影响因子：
5.2
作者：
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通讯作者：
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影响因子：
16.6
作者：
Luo N;Han K;Cabral MJ;Liao X;Zhang S;Liao C;Zhang G;Chen X;Feng Q;Li JF;Wei Y
通讯作者：
Wei Y
影响因子：
5.7
作者：
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通讯作者：
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