Multilayer piezoelectric energy scavenger for large current generation

Title
Multilayer piezoelectric energy scavenger for large current generation
Authors
송현철김형찬강종윤김현재윤석진정대용
Keywords
Piezoelectric; Energy harvesting; Multilayer; Current; Impedance matching; *2008년도 기관고유, 개인평가에 반영되었음
Issue Date
2009-10
Publisher
Journal of electroceramics
Citation
VOL 23, NO 2-4, 301-304
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.
URI
http://pubs.kist.re.kr/handle/201004/33734
ISSN
1385-3449
Appears in Collections:
KIST Publication > Article
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