当前位置：
X-MOL 学术
›
J. Mater. Chem. A
›
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.)
Extraordinary energy storage performance and thermal stability in sodium niobate-based ceramics modified by the ion disorder and stabilized antiferroelectric orthorhombic R phase
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2021-10-12 , DOI: 10.1039/d1ta06848b Ruirui Kang 1 , Zepeng Wang 2 , Weijie Yang 2 , Xiaopei Zhu 1 , Peng Shi 1 , Yangfei Gao 1 , Pu Mao 3 , Jiantuo Zhao 1 , Lixue Zhang 2 , Xiaojie Lou 1
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2021-10-12 , DOI: 10.1039/d1ta06848b Ruirui Kang 1 , Zepeng Wang 2 , Weijie Yang 2 , Xiaopei Zhu 1 , Peng Shi 1 , Yangfei Gao 1 , Pu Mao 3 , Jiantuo Zhao 1 , Lixue Zhang 2 , Xiaojie Lou 1
Affiliation
|
Developing high-performance dielectric capacitors is essential to meet the growing demands of hybrid electric vehicles and high-power applications. The energy storage efficiency and the temperature-variant energy storage properties should be considered besides the energy density. In this work, we prepared (1 − x)(0.8NaNbO3–0.2SrTiO3) − xBi(Zn0.5Sn0.5)O3 (abbreviated as (1 − x)(NN–ST) − xBZS) lead-free ceramics, where ion disorder is induced in the A–B sites. The experimental results indicate that the antiferroelectric orthorhombic R phase is stabilized, and the breakdown strength is enhanced due to the decreased grain size after BZS modification, which are conducive to optimizing the energy storage performance. The piezoresponse force microscopy (PFM) observation reveals that the incorporated BZS promotes the reversibility of domains, resulting in enhanced energy storage efficiency. Therefore, an energy density of 5.82 J cm−3 and an efficiency of 92.3% are simultaneously obtained in the 0.96(NN–ST) − 0.04BZS composition, and the obtained efficiency in this work reaches a record high in NN-based energy storage ceramics. Especially, the sample displays extraordinary temperature stability, that is, high energy storage density (3.6–4.31 J cm−3) and efficiency (90–95%) are achieved in a wide temperature range from −60 °C to 180 °C. Our work would provide a powerful strategy for designing high-performance energy storage capacitors operating in harsh environments.
中文翻译：
离子无序和稳定的反铁电正交R相改性铌酸钠基陶瓷的非凡储能性能和热稳定性
开发高性能介电电容器对于满足混合动力电动汽车和大功率应用不断增长的需求至关重要。除了能量密度外，还应考虑储能效率和随温度变化的储能特性。在这项工作中，我们制备了 (1 − x )(0.8NaNbO 3 –0.2SrTiO 3 ) − x Bi(Zn 0.5 Sn 0.5 )O 3（缩写为 (1 − x )(NN-ST) − xBZS) 无铅陶瓷，其中在 A-B 位点诱导离子紊乱。实验结果表明，反铁电正交R相稳定，BZS改性后晶粒尺寸减小，击穿强度增强，有利于优化储能性能。压电响应力显微镜 (PFM) 观察表明，掺入的 BZS 促进了域的可逆性，从而提高了储能效率。因此，5.82 J cm -3的能量密度在 0.96(NN-ST) - 0.04BZS 组合物中同时获得了 92.3% 的效率，并且在这项工作中获得的效率达到了 NN 基储能陶瓷的历史新高。特别是，该样品表现出非凡的温度稳定性，即在 -60°C 至 180°C 的宽温度范围内实现了高能量存储密度（3.6-4.31 J cm -3）和效率（90-95%）。我们的工作将为设计在恶劣环境中运行的高性能储能电容器提供强大的策略。
更新日期：2021-10-27
中文翻译：
离子无序和稳定的反铁电正交R相改性铌酸钠基陶瓷的非凡储能性能和热稳定性
开发高性能介电电容器对于满足混合动力电动汽车和大功率应用不断增长的需求至关重要。除了能量密度外，还应考虑储能效率和随温度变化的储能特性。在这项工作中，我们制备了 (1 − x )(0.8NaNbO 3 –0.2SrTiO 3 ) − x Bi(Zn 0.5 Sn 0.5 )O 3（缩写为 (1 − x )(NN-ST) − xBZS) 无铅陶瓷，其中在 A-B 位点诱导离子紊乱。实验结果表明，反铁电正交R相稳定，BZS改性后晶粒尺寸减小，击穿强度增强，有利于优化储能性能。压电响应力显微镜 (PFM) 观察表明，掺入的 BZS 促进了域的可逆性，从而提高了储能效率。因此，5.82 J cm -3的能量密度在 0.96(NN-ST) - 0.04BZS 组合物中同时获得了 92.3% 的效率，并且在这项工作中获得的效率达到了 NN 基储能陶瓷的历史新高。特别是，该样品表现出非凡的温度稳定性，即在 -60°C 至 180°C 的宽温度范围内实现了高能量存储密度（3.6-4.31 J cm -3）和效率（90-95%）。我们的工作将为设计在恶劣环境中运行的高性能储能电容器提供强大的策略。
京公网安备 11010802027423号