Textured Lead-Free Piezoelectric Ceramics for Flexible Energy Harvesters

Yuvasree Purusothaman; Haoyang Leng; Aman Nanda; Ilan Levine; Shashank Priya

doi:10.1021/acsami.2c15640

Textured Lead-Free Piezoelectric Ceramics for Flexible Energy Harvesters

Yuvasree Purusothaman
, Haoyang Leng
, Aman Nanda
, Ilan Levine
, Shashank Priya

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

A lead-free (K,Na)NbO₃-based piezoelectric ceramic is textured along the (001) direction using the NaNbO₃ (NN) seeds. The composition 0.96(K_0.5Na_0.5)(Nb_0.965Sb_0.035)O₃-0.01CaZrO₃-0.03(Bi_0.5K_0.5)HfO₃ (KNN) is found to provide an excellent combination of electromechanical coefficients at room temperature. The textured composition with 5 wt % NN template (KNN-5NN) exhibits considerably improved electromechanical coefficients, d₃₃ ∼ 590 pC/N, k₃₁ ∼ 0.46, and d₃₁ ∼ 215 ×10^-12 C/N, at room temperature. A flexible piezoelectric energy harvester (F-PEH) is fabricated using the textured KNN-5NN ceramic and tested under cyclic force. F-PEH exhibits enhanced output voltage (V_oc ∼ 25 V), current (I ∼ 0.4 μA), and power density (P_D ∼ 5.5 mW/m²) (R_L of 10 MΩ) in the off-resonance frequency regime. In comparison to the random ceramic KNN-0NN-based F-PEH (V_oc ∼ 8 V and I ∼ 0.1 μA), the textured F-PEH significantly outperformed energy harvesting capability due to the large figure-of-merit value (d₃₁ × g₃₁) ∼ 3354 ×10^-15 m³/J. This work provides a methodology for texturing lead-free materials and further implementing them in flexible energy harvesting devices and sensors.

Original language	English (US)
Pages (from-to)	6584-6593
Number of pages	10
Journal	ACS Applied Materials and Interfaces
Volume	15
Issue number	5
DOIs	https://doi.org/10.1021/acsami.2c15640
State	Published - Feb 8 2023
Externally published	Yes

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Publisher Copyright:
© 2023 American Chemical Society.

Keywords

KNN piezoceramics
fatigue
flexible energy harvester
phase transition
texture

PubMed: MeSH publication types

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10.1021/acsami.2c15640

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@article{8b5482e3fb1149f996b751be3143d8e8,

title = "Textured Lead-Free Piezoelectric Ceramics for Flexible Energy Harvesters",

abstract = "A lead-free (K,Na)NbO3-based piezoelectric ceramic is textured along the (001) direction using the NaNbO3 (NN) seeds. The composition 0.96(K0.5Na0.5)(Nb0.965Sb0.035)O3-0.01CaZrO3-0.03(Bi0.5K0.5)HfO3 (KNN) is found to provide an excellent combination of electromechanical coefficients at room temperature. The textured composition with 5 wt \% NN template (KNN-5NN) exhibits considerably improved electromechanical coefficients, d33 ∼ 590 pC/N, k31 ∼ 0.46, and d31 ∼ 215 ×10-12 C/N, at room temperature. A flexible piezoelectric energy harvester (F-PEH) is fabricated using the textured KNN-5NN ceramic and tested under cyclic force. F-PEH exhibits enhanced output voltage (Voc ∼ 25 V), current (I ∼ 0.4 μA), and power density (PD ∼ 5.5 mW/m2) (RL of 10 MΩ) in the off-resonance frequency regime. In comparison to the random ceramic KNN-0NN-based F-PEH (Voc ∼ 8 V and I ∼ 0.1 μA), the textured F-PEH significantly outperformed energy harvesting capability due to the large figure-of-merit value (d31 × g31) ∼ 3354 ×10-15 m3/J. This work provides a methodology for texturing lead-free materials and further implementing them in flexible energy harvesting devices and sensors.",

keywords = "KNN piezoceramics, fatigue, flexible energy harvester, phase transition, texture",

author = "Yuvasree Purusothaman and Haoyang Leng and Aman Nanda and Ilan Levine and Shashank Priya",

note = "Publisher Copyright: {\textcopyright} 2023 American Chemical Society.",

year = "2023",

month = feb,

day = "8",

doi = "10.1021/acsami.2c15640",

language = "English (US)",

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TY - JOUR

T1 - Textured Lead-Free Piezoelectric Ceramics for Flexible Energy Harvesters

AU - Purusothaman, Yuvasree

AU - Leng, Haoyang

AU - Nanda, Aman

AU - Levine, Ilan

AU - Priya, Shashank

PY - 2023/2/8

Y1 - 2023/2/8

N2 - A lead-free (K,Na)NbO3-based piezoelectric ceramic is textured along the (001) direction using the NaNbO3 (NN) seeds. The composition 0.96(K0.5Na0.5)(Nb0.965Sb0.035)O3-0.01CaZrO3-0.03(Bi0.5K0.5)HfO3 (KNN) is found to provide an excellent combination of electromechanical coefficients at room temperature. The textured composition with 5 wt % NN template (KNN-5NN) exhibits considerably improved electromechanical coefficients, d33 ∼ 590 pC/N, k31 ∼ 0.46, and d31 ∼ 215 ×10-12 C/N, at room temperature. A flexible piezoelectric energy harvester (F-PEH) is fabricated using the textured KNN-5NN ceramic and tested under cyclic force. F-PEH exhibits enhanced output voltage (Voc ∼ 25 V), current (I ∼ 0.4 μA), and power density (PD ∼ 5.5 mW/m2) (RL of 10 MΩ) in the off-resonance frequency regime. In comparison to the random ceramic KNN-0NN-based F-PEH (Voc ∼ 8 V and I ∼ 0.1 μA), the textured F-PEH significantly outperformed energy harvesting capability due to the large figure-of-merit value (d31 × g31) ∼ 3354 ×10-15 m3/J. This work provides a methodology for texturing lead-free materials and further implementing them in flexible energy harvesting devices and sensors.

AB - A lead-free (K,Na)NbO3-based piezoelectric ceramic is textured along the (001) direction using the NaNbO3 (NN) seeds. The composition 0.96(K0.5Na0.5)(Nb0.965Sb0.035)O3-0.01CaZrO3-0.03(Bi0.5K0.5)HfO3 (KNN) is found to provide an excellent combination of electromechanical coefficients at room temperature. The textured composition with 5 wt % NN template (KNN-5NN) exhibits considerably improved electromechanical coefficients, d33 ∼ 590 pC/N, k31 ∼ 0.46, and d31 ∼ 215 ×10-12 C/N, at room temperature. A flexible piezoelectric energy harvester (F-PEH) is fabricated using the textured KNN-5NN ceramic and tested under cyclic force. F-PEH exhibits enhanced output voltage (Voc ∼ 25 V), current (I ∼ 0.4 μA), and power density (PD ∼ 5.5 mW/m2) (RL of 10 MΩ) in the off-resonance frequency regime. In comparison to the random ceramic KNN-0NN-based F-PEH (Voc ∼ 8 V and I ∼ 0.1 μA), the textured F-PEH significantly outperformed energy harvesting capability due to the large figure-of-merit value (d31 × g31) ∼ 3354 ×10-15 m3/J. This work provides a methodology for texturing lead-free materials and further implementing them in flexible energy harvesting devices and sensors.

KW - KNN piezoceramics

KW - fatigue

KW - flexible energy harvester

KW - phase transition

KW - texture

UR - https://www.scopus.com/pages/publications/85146859714

UR - https://www.scopus.com/pages/publications/85146859714#tab=citedBy

U2 - 10.1021/acsami.2c15640

DO - 10.1021/acsami.2c15640

M3 - Article

C2 - 36692991

AN - SCOPUS:85146859714

SN - 1944-8244

VL - 15

SP - 6584

EP - 6593

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 5

ER -

Textured Lead-Free Piezoelectric Ceramics for Flexible Energy Harvesters

Abstract

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