We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Boosting Power-Generating Performance of Triboelectric Nanogenerators via Artificial Control of Ferroelectric Polarization and Dielectric Properties.
- Authors
Seung, Wanchul; Yoon, Hong‐Joon; Kim, Tae Yun; Ryu, Hanjun; Kim, Jihye; Lee, Ju‐Hyuck; Lee, Jeong Hwan; Kim, Sanghyun; Park, Yun Kwon; Park, Young Jun; Kim, Sang‐Woo
- Abstract
Low output current represents a critical challenge that has interrupted the use of triboelectric nanogenerators (TNGs) in a wide range of applications as sustainable power sources. Many approaches (e.g., operation at high frequency, parallel stacks of individual devices, and hybridization with other energy harvesters) remain limited in solving the challenge of low output current from TNGs. Here, a nanocomposite material system having a superior surface charge density as a triboelectric active material is reported. The nanocomposite material consists of a high dielectric ceramic material, barium titanate, showing great charge-trapping capability, together with a ferroelectric copolymer matrix, Poly(vinylidenefluoride-co-trifluoroethylene) (P(VDF-TrFE)), with electrically manipulated polarization with strong triboelectric charge transfer characteristics. Based on a contact potential difference study showing that poled P(VDF-TrFE) has 18 times higher charge attracting properties, a fraction between two components is optimized. Boosting power-generating performance is achieved for 1130 V of output voltage and 1.5 mA of output current with this ferroelectric composite-based TNG, under 6 kgf of pushing force at 5 Hz. An enormously faster charging property than traditional polymer film-based TNGs is demonstrated in this study. Finally, the charging of a self-powering smartwatch with a charging management circuit system with no external power sources is demonstrated successfully.
- Subjects
TRIBOELECTRICITY; ELECTRIC properties of nanostructured materials; RENEWABLE energy sources; POWER resources; CHARGE transfer
- Publication
Advanced Energy Materials, 2017, Vol 7, Issue 2, pn/a
- ISSN
1614-6832
- Publication type
Article
- DOI
10.1002/aenm.201600988