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Gram-scale Y-doped ZnO and PVDF electrospun film for piezoelectric nanogenerators
Composites Science and Technology ( IF 8.3 ) Pub Date : 2021-09-01 , DOI: 10.1016/j.compscitech.2021.109011
Juan Yi 1 , Yiheng Song 1 , Zhilong Cao 1 , Chenjian Li 1 , Chuanxi Xiong 1
Affiliation  

With the demand of green energy upsurging, piezoelectric nanogenerators (PENGs) are booming for next generation of wearable energy supply. In this work, Y-doped ZnO was manufactured with yield of ~3.2 g (~74%) in one pot, and PVDF/Y-doped ZnO electrospun films was fabricated with flexibility of PVDF and high piezoelectricity of Y-doped ZnO (Y–ZnO). Among all electrospun films, the degree of dipole orientation of PVDF and the contents of Y-doped ZnO in 15 Y-Z films is uppermost except for agglomerated 20 Y-Z electrospun film. Increasing amounts of Y–ZnO and enhanced alignment degree of PVDF cause increased piezoelectric output. When walking or running on 15 Y-Z PENG, output voltage raised to ~20 V and ~35 V, and capacitor of 5 μF was charged to ~2.8 V and ~3.7 V in 50 s. For 15 Y-Z PENG with high F(β) of 98%, its output voltage and current increased to ~13 V and ~1.6 μA, and its maximum instantaneous power density (~2 μW/cm2) was obtained with load of 10 MΩ at 40 N and 0.8 Hz. In addition, 15 Y-Z PENG can withstand compressing and releasing for 1100 s at 0.8 Hz. Such brilliant performance earns gigantic prospect of application on collecting teeny-weeny energy.



中文翻译:

用于压电纳米发电机的克级 Y 掺杂 ZnO 和 PVDF 电纺薄膜

随着绿色能源需求的激增,压电纳米发电机(PENG)为下一代可穿戴能源供应蓬勃发展。在这项工作中,一锅制得了约 3.2 g(约 74%)的 Y 掺杂 ZnO,并利用 PVDF 的柔韧性和 Y 掺杂 ZnO(Y –氧化锌)。在所有电纺薄膜中,除团聚的 20 YZ 电纺薄膜外,PVDF 的偶极取向度和 15 YZ 薄膜中 Y 掺杂的 ZnO 含量最高。Y-ZnO 量的增加和 PVDF 取向度的增加导致压电输出增加。在 15 YZ PENG 上行走或跑步时,输出电压升至~20 V 和~35 V,5 μF 电容器在 50 秒内充电至~2.8 V 和~3.7 V。对于具有 98% 高 F(β) 的 15 YZ PENG,2 ) 是在 40 N 和 0.8 Hz 下以 10 MΩ 的负载获得的。此外,15 YZ PENG 可以在 0.8 Hz 下承受 1100 秒的压缩和释放。如此出色的表现在收集微量能量方面有着巨大的应用前景。

更新日期:2021-09-12
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