| Autor: |
Qiong Wu, Faqiang Zhang, Bing Wang, Zhi Cheng, Song Liu, Ronglei Zhu, Yuheng Huang, Jianglei Chang, Zhifu Liu, Shuxiang Dong |
| Jazyk: |
angličtina |
| Rok vydání: |
2025 |
| Předmět: |
|
| Zdroj: |
Journal of Materiomics, Vol 11, Iss 2, Pp 100876- (2025) |
| Druh dokumentu: |
article |
| ISSN: |
2352-8478 |
| DOI: |
10.1016/j.jmat.2024.04.003 |
| Popis: |
To date, most of the reported piezoelectric energy harvesters (PEHs) use lead-based Pb(Zr,Ti)O3 (PZT) piezoceramic family, which is obviously harmful to the environment. In recent years, the PEHs constructed with lead-free piezoceramics have been developed rapidly. However, their force-to-electric (F–E) output performances are still unsatisfactory. To address this issue, here we present a PEH assembled with lead-free potassium sodium niobate (KNN) based co-fired multilayered piezoceramics (MLPCs), which show a high output current and power. First, high-quality KNN-based MLPCs are prepared by tape-casting process. Each MLPC contains 11 piezoceramic layers, and the cross-section SEM image of the MLPC indicates that the ceramic layers are well connected with the Ag/Pd inner electrode layers. The d33 of a single MLPC reaches up to 4675 pC/N. The F–E output performance of KNN-MLPC based PEH is then tested. The inherent advantages of multilayered ceramics enable the PEH to achieve a peak-to-peak output current of up to 1.48 mA and a peak-to-peak output power of 2.19 mW under a harmonic force load of 6 kN at 14 Hz. Finally, the PEH is tested to validate its practical application in real road environments, demonstrating its promising for the use of self-powered monitoring sensors for collecting traffic data. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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