Investigation of energy harvesting performance of BCZT piezoelectric ceramics under low frequency
Bulletin of Materials Science(2024)
摘要
This study focuses on evaluating the output performance of Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 O 3 (BCZT) piezoceramics, specifically for low-frequency energy harvesting applications. The BCZT ceramics are fabricated using the solid-state reactive sintering (SSRS) method combined with the cold isostatic pressing (CIP) technique. Characterization of the ceramic phase and microstructure is conducted using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The dielectric properties ( ε r and tan δ ), ferroelectric properties ( P–E and S–E hysteresis loops) and piezoelectric properties (piezoelectric constant ( d 33 ), piezoelectric voltage constant ( g 33 ), figure of merit (FOM), mechanical quality factor (Q m ) and the electromechanical coupling factor ( k p )) of the BCZT ceramics are also investigated. The results indicate that the BCZT ceramics (with dimensions of 30 × 14 × 1 mm 3 ) demonstrate the capability to generate a maximum power of 2.86, 6.45, 17.52 and 28.03 µW across a 1 MΩ resistor when subjected to compressive loads of 50, 100, 150 and 200 N at a frequency of 0.3 Hz. The energy harvesting performance of the BCZT ceramic suggests promising potential for practical energy harvesting applications.
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关键词
BCZT,lead-free piezoelectric,piezoelectric generator,energy harvesting
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