Excellent Energy-Storage Performance of (0.85 – x)NaNbO3–xNaSbO3–0.15(Na0.5La0.5)TiO3 Antiferroelectric Ceramics through B-Site Sb5+ Driven Phase Transition,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Excellent Energy-Storage Performance of (0.85 – x)NaNbO3–xNaSbO3–0.15(Na0.5La0.5)TiO3 Antiferroelectric Ceramics through B-Site Sb5+ Driven Phase Transition
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-04-26 , DOI: 10.1021/acsami.3c03296
Aiwen Xie ₁ , Jun Chen ₂ , Jianan Zuo ₃ , Juan Liu ₃ , Tianyu Li ₁ , Xuewen Jiang ₁ , Ruzhong Zuo ₁

Affiliation

NaNbO₃-based relaxor antiferroelectric (AFE) ceramics are receiving more and more attention for high power pulse applications. A commonly used design strategy is to add complex perovskites with lower tolerance factors. Herein, a new lead-free AFE system of (0.85 – x)NaNbO₃–xNaSbO₃–0.15(Na_0.5La_0.5)TiO₃ was specially designed considering the substitution of Sb⁵⁺ for Nb⁵⁺ reduces the polarizability of B-site ions but increases the tolerance factor. The formation of nanodomains with stable AFE orthorhombic R phase symmetry contributes to a slim and double-like polarization-field hysteresis loop, while the increased resistivity and activation energy as a result of sintering aids lead to an enhanced breakdown strength. Therefore, an excellent energy density W_rec ≈ 6.05 J/cm³, a high energy efficiency η ≈ 80.5%, and good charge–discharge performances (power density P_D ≈ 155 MW/cm³ and discharging rate t_0.9 ≈ 44.6 ns) were achieved in MnO₂-doped x = 0.03 ceramics. The experimental results demonstrate that the B-site Sb⁵⁺ driven orthorhombic P–R phase transition and increased local structure disorder should provide a new strategy to design high-performance NaNbO₃-based relaxor AFE capacitors.

中文翻译：

(0.85 – x)NaNbO3–xNaSbO3–0.15(Na0.5La0.5)TiO3 反铁电陶瓷通过 B 位 Sb5+ 驱动的相变实现优异的储能性能

基于NaNbO ₃的弛豫反铁电 (AFE) 陶瓷在高功率脉冲应用中受到越来越多的关注。一种常用的设计策略是添加具有较低公差因子的复杂钙钛矿。^{在此，考虑到用 Sb 5+}替代Nb ^{5+ ，专门设计了 (0.85 –}x )NaNbO ₃ – x NaSbO ₃ –0.15(Na _0.5 La _0.5 )TiO ₃的新型无铅 AFE 系统降低了 B 位离子的极化率，但增加了容差因子。具有稳定 AFE 正交 R 相对称性的纳米域的形成有助于形成细长的双极化场磁滞回线，而烧结助剂导致的电阻率和活化能增加导致击穿强度增强。因此，优异的能量密度W _rec ≈ 6.05 J/cm ³，高能量效率η ≈ 80.5%，以及良好的充放电性能（功率密度P _D ≈ 155 MW/cm ³和放电速率t _0.9 ≈ 44.6 ns）在 MnO ₂掺杂的x中实现= 0.03 陶瓷。实验结果表明，B 位 Sb ⁵⁺驱动的正交 P-R 相变和增加的局部结构无序应为设计高性能 NaNbO ₃基弛豫 AFE 电容器提供新策略。

更新日期：2023-04-26

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南