Optimizing Piezoelectricity and Temperature Stability in Sodium Potassium Niobate Ceramics through Phase Regulation and Texturing

IF 5.4 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2025-02-23 DOI:10.1021/acsaem.5c0016310.1021/acsaem.5c00163

Yuzhi Zhai, Jie Wang, Juan Du*, Limei Zheng* and Shiyi Guo*,

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Abstract

This study aims to optimize the electromechanical performance and temperature stability of lead-free potassium sodium niobate-based piezoelectric ceramics. (1–x)K_0.525Na_0.475Nb_0.96Sb_0.04O₃-xBi_0.5Na_0.5Zr_0.5Hf_0.5O₃ ceramics are investigated by manipulating the phase structure and texturing. The addition of Bi_0.5Na_0.5Zr_0.5Hf_0.5O₃ effectively adjusts the phase structure of the ceramics. Notably, the textured x = 0.03 ceramics exhibit excellent overall properties: piezoelectric strain coefficient d₃₃ ∼ 590 pC/N, piezoelectric voltage coefficient g₃₃ ∼ 57.7 × 10^–3 Vm/N, and dielectric loss tan δ ∼ 0.043. The enhanced piezoelectric coefficient increases its potential for application in piezoelectric energy harvesting. Moreover, the d₃₃ of the textured x = 0.05 ceramics demonstrates good temperature stability, with a d₃₃ of 360 pC/N and fluctuating within 10% in the temperature range of 25 to 170 °C. The results indicate that combining texturing with phase structure modulation is a promising approach to enhancing the application potential of lead-free potassium sodium niobate-based piezoelectric ceramics.

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来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.