Multilayer piezoelectric energy scavenger for large current generation

Hyun Cheol Song; Hyung Chan Kim; Chong Yun Kang; Hyun Jai Kim; Seok Jin Yoon; Dae Yong Jeong

doi:10.1007/s10832-008-9439-9

Multilayer piezoelectric energy scavenger for large current generation

Hyun Cheol Song, Hyung Chan Kim, Chong Yun Kang, Hyun Jai Kim, Seok Jin Yoon, Dae Yong Jeong

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

49 Citations (Scopus)

Abstract

Piezoelectric energy harvesting system is promising to the energy source of wireless sensor nodes for ubiquitous sensor networks. The piezoelectric material has been usually considered as a high voltage and low current source. When charging current into the thin film battery or supercapacitor, a larger current is needed to shorten the charging time. In order to increase the current in the piezoelectric energy harvesting, multilayer ceramics were fabricated. N-layer multilayer ceramics decreased the voltage but increased the current N times. The impedance of the multilayer ceramics are matched to 1 kΩ which is similar to the impedance of general electrical devices. The multilayer piezoelectric generator could be directly employed for electrical device without the additional electrical circuit to improve efficiency.

Original language	English
Pages (from-to)	301-304
Number of pages	4
Journal	Journal of Electroceramics
Volume	23
Issue number	2-4
DOIs	https://doi.org/10.1007/s10832-008-9439-9
Publication status	Published - 2009 Oct
Externally published	Yes

Keywords

Current
Energy harvesting
Impedance matching
Multilayer
Piezoelectric

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Mechanics of Materials
Electrical and Electronic Engineering
Materials Chemistry

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abstract = "Piezoelectric energy harvesting system is promising to the energy source of wireless sensor nodes for ubiquitous sensor networks. The piezoelectric material has been usually considered as a high voltage and low current source. When charging current into the thin film battery or supercapacitor, a larger current is needed to shorten the charging time. In order to increase the current in the piezoelectric energy harvesting, multilayer ceramics were fabricated. N-layer multilayer ceramics decreased the voltage but increased the current N times. The impedance of the multilayer ceramics are matched to 1 kΩ which is similar to the impedance of general electrical devices. The multilayer piezoelectric generator could be directly employed for electrical device without the additional electrical circuit to improve efficiency.",

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AU - Song, Hyun Cheol

AU - Kim, Hyung Chan

AU - Kang, Chong Yun

AU - Kim, Hyun Jai

AU - Yoon, Seok Jin

AU - Jeong, Dae Yong

PY - 2009/10

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