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Flexible multilayer lead-free film capacitor with high energy storage performances via heterostructure engineering
Journal of Materiomics ( IF 9.4 ) Pub Date : 2022-02-18 , DOI: 10.1016/j.jmat.2022.02.007
Ningning Sun 1 , Jinhua Du 1 , Ye Zhao 1 , Chunxiao Lu 1 , Pei Han 1 , Yong Li 1 , Qiwei Zhang 1 , Xihong Hao 1
Affiliation  

The immense potential of flexible energy storage materials applied in wearable electronic devices has stimulated a lot of science researches on manufacturing technology and performance optimization. Herein, an all-inorganic flexible ferroelectric film with multilayer heterostructure is prepared based on Mn doped Bi0.5Na0.5TiO3single bondBiNi0.5Zr0.5O3 (Mn:BNT-BNZ) and Bi0.5Na0.5TiO3single bondBiZn0.5Zr0.5O3 (BNT-BZZ) relaxor ferroelectrics. A win-win situation of breakdown strength and polarization is achieved in the Mn:BNT-BNZ/BNT-BZZ multilayer film with the stacking period N = 3, of which energy density and efficiency reach 80.4 J/cm3 and 62.0% respectively. It is proposed that the excellent energy storage performances are attributed to the synergistic effect of the electric field amplification effect, interface blocking effect and the polarization coupling effect based on the multilayer heterostructure. Moreover, the flexible ferroelectric film exhibits outstanding temperature (25–205 °C), frequency (0.5–5 kHz) stability and antifatigue property (1 × 108 cycles), and can well maintain stable performance at different tensile/compressive bending radii (10–5 mm) and even after 104 bending cycles with a fixed bending radius of 3 mm. This work opens up a promising route to the development of flexible energy storage materials.



中文翻译:

通过异质结构工程实现高储能性能的柔性多层无铅薄膜电容器

柔性储能材料在可穿戴电子设备中应用的巨大潜力激发了许多关于制造技术和性能优化的科学研究。在此,基于Mn掺杂的Bi 0.5 Na 0.5 TiO 3单键 BiNi 0.5 Zr 0.5 O 3 (Mn:BNT-BNZ)和Bi 0.5 Na 0.5 TiO 3单键 BiZn 0.5 Zr 0.5 O 3制备了具有多层异质结构的全无机柔性铁电薄膜。(BNT-BZZ) 弛豫铁电体。堆叠周期N =3的Mn:BNT-BNZ/BNT-BZZ多层膜实现击穿强度和极化双赢 ,能量密度和效率分别达到80.4 J/cm 3和62.0%。提出了优异的储能性能归因于基于多层异质结构的电场放大效应、界面阻挡效应和极化耦合效应的协同作用。此外,柔性铁电薄膜具有出色的温度(25-205 °C)、频率(0.5-5 kHz)稳定性和抗疲劳性能(1 × 10 8循环),并且在不同的拉伸/压缩弯曲半径(10-5 mm)下甚至在固定弯曲半径为3 mm的情况下经过10 4 个弯曲循环后仍能很好地保持稳定的性能。这项工作为开发柔性储能材料开辟了一条有希望的途径。

更新日期:2022-02-18
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