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 | |
| Publication status | Published - 2009 Oct |
Bibliographical note
Funding Information:Acknowledgement This research was financially supported by a grant Code No. 2E19860 from the Korea Institute of Science and Technology, Korea.
Keywords
- Current
- Energy harvesting
- Impedance matching
- Multilayer
- Piezoelectric
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Ceramics and Composites
- Materials Chemistry
- Electrical and Electronic Engineering