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 journalArticlepeer-review

71 Citations (Scopus)


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 languageEnglish
Pages (from-to)301-304
Number of pages4
JournalJournal of Electroceramics
Issue number2-4
Publication statusPublished - 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.


  • 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


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