Structural and Piezoelectric Properties of (Na1−xKx)NbO3 Platelets and Their Application for Piezoelectric Nanogenerator

Hai Bo Xu; Young Jin Ko; Tae Gon Lee; Su Jin Park; Myoung Sub Noh; Bo Yun Kim; Jeong Seog Kim; Sahn Nahm; G. Brennecka

doi:10.1111/jace.14382

Structural and Piezoelectric Properties of (Na_1−xK_x)NbO₃ Platelets and Their Application for Piezoelectric Nanogenerator

Hai Bo Xu, Young Jin Ko, Tae Gon Lee, Su Jin Park, Myoung Sub Noh, Bo Yun Kim, Jeong Seog Kim, Sahn Nahm, G. Brennecka

Department of Materials Science and Engineering

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

7 Citations (Scopus)

Abstract

(Na_1−xK_x)NbO₃ (NKN) platelets synthesized at 600°C for 12 h have an Amm2 orthorhombic structure. However, the structure of NKN platelets synthesized at 500°C is a mixture of R3m rhombohedral and Amm2 orthorhombic structures. The formation of a rhombohedral structure is attributed to the presence of OH⁻ and H₂O defects in the NKN platelets. The piezoelectric strain constant (d₃₃) of NKN platelets synthesized at 600°C for 12 h is 100 pmV⁻¹, whereas that of NKN platelets synthesized at 500°C is lesser (50 pmV⁻¹) due to the presence of these defects. Piezoelectric nanogenerators (PNGs) are fabricated using composites consisting of NKN platelets and polydimethylsiloxane. A large output voltage of 25 V and output current of 2.7 μA were obtained for the PNG with NKN platelets synthesized at 600°C for 6 h. This PNG shows a high output electrical energy of 3.0 μW at an external load of 5.1 MΩ.

Original language	English
Pages (from-to)	3476-3484
Number of pages	9
Journal	Journal of the American Ceramic Society
Volume	99
Issue number	10
DOIs	https://doi.org/10.1111/jace.14382
Publication status	Published - 2016 Oct 1

Keywords

NKN platelet
lead-free piezoelectric materials
piezoelectric nanogenerators

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1111/jace.14382

Cite this

@article{d0ca4d1924a6421c838c8ae616531831,

title = "Structural and Piezoelectric Properties of (Na1−xKx)NbO3 Platelets and Their Application for Piezoelectric Nanogenerator",

abstract = "(Na1−xKx)NbO3 (NKN) platelets synthesized at 600°C for 12 h have an Amm2 orthorhombic structure. However, the structure of NKN platelets synthesized at 500°C is a mixture of R3m rhombohedral and Amm2 orthorhombic structures. The formation of a rhombohedral structure is attributed to the presence of OH− and H2O defects in the NKN platelets. The piezoelectric strain constant (d33) of NKN platelets synthesized at 600°C for 12 h is 100 pmV−1, whereas that of NKN platelets synthesized at 500°C is lesser (50 pmV−1) due to the presence of these defects. Piezoelectric nanogenerators (PNGs) are fabricated using composites consisting of NKN platelets and polydimethylsiloxane. A large output voltage of 25 V and output current of 2.7 μA were obtained for the PNG with NKN platelets synthesized at 600°C for 6 h. This PNG shows a high output electrical energy of 3.0 μW at an external load of 5.1 MΩ.",

keywords = "NKN platelet, lead-free piezoelectric materials, piezoelectric nanogenerators",

author = "Xu, {Hai Bo} and Ko, {Young Jin} and Lee, {Tae Gon} and Park, {Su Jin} and Noh, {Myoung Sub} and Kim, {Bo Yun} and Kim, {Jeong Seog} and Sahn Nahm and G. Brennecka",

note = "Funding Information: This research was supported by the Commercialization Promotion Agency for R&D Outcomes (COMPA) funded by the Ministry of Science, ICT and Future Planning (MISP). Publisher Copyright: {\textcopyright} 2016 The American Ceramic Society",

year = "2016",

month = oct,

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doi = "10.1111/jace.14382",

language = "English",

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T1 - Structural and Piezoelectric Properties of (Na1−xKx)NbO3 Platelets and Their Application for Piezoelectric Nanogenerator

AU - Xu, Hai Bo

AU - Ko, Young Jin

AU - Lee, Tae Gon

AU - Park, Su Jin

AU - Noh, Myoung Sub

AU - Kim, Bo Yun

AU - Kim, Jeong Seog

AU - Nahm, Sahn

AU - Brennecka, G.

N1 - Funding Information: This research was supported by the Commercialization Promotion Agency for R&D Outcomes (COMPA) funded by the Ministry of Science, ICT and Future Planning (MISP). Publisher Copyright: © 2016 The American Ceramic Society

PY - 2016/10/1

Y1 - 2016/10/1

N2 - (Na1−xKx)NbO3 (NKN) platelets synthesized at 600°C for 12 h have an Amm2 orthorhombic structure. However, the structure of NKN platelets synthesized at 500°C is a mixture of R3m rhombohedral and Amm2 orthorhombic structures. The formation of a rhombohedral structure is attributed to the presence of OH− and H2O defects in the NKN platelets. The piezoelectric strain constant (d33) of NKN platelets synthesized at 600°C for 12 h is 100 pmV−1, whereas that of NKN platelets synthesized at 500°C is lesser (50 pmV−1) due to the presence of these defects. Piezoelectric nanogenerators (PNGs) are fabricated using composites consisting of NKN platelets and polydimethylsiloxane. A large output voltage of 25 V and output current of 2.7 μA were obtained for the PNG with NKN platelets synthesized at 600°C for 6 h. This PNG shows a high output electrical energy of 3.0 μW at an external load of 5.1 MΩ.

AB - (Na1−xKx)NbO3 (NKN) platelets synthesized at 600°C for 12 h have an Amm2 orthorhombic structure. However, the structure of NKN platelets synthesized at 500°C is a mixture of R3m rhombohedral and Amm2 orthorhombic structures. The formation of a rhombohedral structure is attributed to the presence of OH− and H2O defects in the NKN platelets. The piezoelectric strain constant (d33) of NKN platelets synthesized at 600°C for 12 h is 100 pmV−1, whereas that of NKN platelets synthesized at 500°C is lesser (50 pmV−1) due to the presence of these defects. Piezoelectric nanogenerators (PNGs) are fabricated using composites consisting of NKN platelets and polydimethylsiloxane. A large output voltage of 25 V and output current of 2.7 μA were obtained for the PNG with NKN platelets synthesized at 600°C for 6 h. This PNG shows a high output electrical energy of 3.0 μW at an external load of 5.1 MΩ.

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