Ultra-high energy harvester performance in KNN-based textured piezoceramics via multiscale reconfiguration design Article Swipe

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Caixia Zhu , Jin Qian , Luomeng Tang , Shi Cheng , Boxiong Shen , Jiwei Zhai ·

YOU? · · 2025 · Open Access · · DOI: https://doi.org/10.26599/jac.2025.9221167

The lower electromechanical performance of lead-free piezoelectric materials remains a critical bottleneck impeding their ability to replace lead-based materials in energy harvesting. To overcome this predicament, here, we propose a multiscale reconfiguration design to tailor the intricate coupling between the structure and properties of (K,Na)NbO3-based piezoelectric materials. The multiphase coexistence, local structural heterogeneity, enhanced crystal anisotropy, and acceptor doping yielded (K,Na)NbO3-based ceramics with a harmonious balance between the piezoelectric coefficient and the dielectric constant. As a result, the (K,Na)NbO3-based textured ceramics demonstrate exceptional piezoelectric properties, including a piezoelectric charge coefficient (d33) of 551 pC·N−1 and a piezoelectric voltage coefficient (g33) of 54.2 mV·m·N−1. The energy harvesting devices exhibit an ultrahigh instantaneous output power (Pout) of 4.85 mW and an instantaneous output power density (PD) of 70.2 μW·mm−3. This work provides valuable insights into the design and development of high-performance lead-free piezoelectric ceramics and significantly advances the potential of (K,Na)NbO3-based ceramics as viable replacements for Pb(Zr,Ti)O3-based ceramics in energy harvesting applications.

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International Atomic Energy Agency

International Harvester

Energy-Dispersive X-Ray Spectroscopy

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Type: article
Language: en
Landing Page: https://doi.org/10.26599/jac.2025.9221167
PDF: https://file.sciopen.com/sciopen_public/1964694295782359042.pdf
OA Status: gold
Related Works: 10
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OpenAlex ID: https://openalex.org/W4414043918

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DOI: https://doi.org/10.26599/jac.2025.9221167

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Title: Ultra-high energy harvester performance in KNN-based textured piezoceramics via multiscale reconfiguration design

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Type: article

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Language: en

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Publication year: 2025

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Publication date: 2025-09-07

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Authors: Caixia Zhu, Jin Qian, Luomeng Tang, Shi Cheng, Boxiong Shen, Jiwei Zhai

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Landing page: https://doi.org/10.26599/jac.2025.9221167

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PDF URL: https://file.sciopen.com/sciopen_public/1964694295782359042.pdf

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Related works (count): 10

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