摩擦电效应
材料科学
压电
电压
基质(化学分析)
纳米发生器
多孔性
纳米技术
光电子学
复合材料
电气工程
工程类
作者
Yong–Hun Lee,Dae Hun Kim,Young‐Jin Kim,Irfan Shabbir,Mingjun Li,Kyung Ho Yoo,Tae Whan Kim
出处
期刊:Nano Energy
[Elsevier]
日期:2022-11-01
卷期号:102: 107676-107676
被引量:19
标识
DOI:10.1016/j.nanoen.2022.107676
摘要
Methylammonium lead tribromide (MAPbBr 3 ) single crystals (SCs)-polyvinylidene fluoride (PVDF) nanocomposites (NCs) are fabricated by using a simple sol-gel method. Uniform MAPbBr 3 SCs are successfully embedded in a porous PVDF matrix to effect a synergism between an enhanced piezoelectric effect and enhanced charge accumulation. A piezoelectric/triboelectric hybrid nanogenerator (HNG) is fabricated utilizing the MAPbBr 3 SCs-PVDF NCs as a dielectric layer in a triboelectric nanogenerator (TENG), and its performance is compared with that of a piezoelectric nanogenerator (PENG) based on MAPbBr 3 -PVDF NCs. The HNG based on the MAPbBr 3 SCs-PVDF NCs showed the highest output voltage, 256 V, which is 3.87 times higher than that of the PENG based on the same NCs. The power density (16.17 mA/cm 2 ) of the HNG based on MAPbBr 3 SCs-PVDF NCs is approximately 200 times larger than that of the PENG based on the same NCs. This enhancement of the performance of HNG based on the MAPbBr 3 SCs-PVDF NCs can be attributed to the very large tribo-piezoelectric coupling efficiency due to the existence of the MAPbBr 3 SCs uniformly formed in the porous PVDF matrix. • Methylammonium lead tribromide (MAPbBr 3 ) single crystals (SCs) are embedded into a polyvinylidene fluoride (PVDF) matrix. • Formation of the MAPbBr 3 SCs into the porous PVDF matrix enhance the piezoelectric effect and charge accumulation effect. • Dielectric effects of the MAPbBr 3 SCs-PVDF NCs are systemically investigated. • MAPbBr 3 SCs-PVDF NCs are utilized as a dielectric layer of a piezoelectric/triboelectric hybrid nanogenerator (HNG). • HNG based on MAPbBr 3 SCs-PVDF NCs is compared with the piezoelectric nanogenerator (PENG) based on the same NCs.
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