Vibration-based energy harvesting with piezoelectrets having high d{sub 31} activity

Journal Article · Mon May 09 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4948649· OSTI ID:22591725

Zhang, X. ^[1]; Pondrom, P. ^[1]; Wu, L. ^[2]

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1. Institute for Telecommunications Technology, Technische Universität Darmstadt, Merckstr. 25, 64283 Darmstadt (Germany)
2. School of Physics Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092 (China)

Sandwiched fluoroethylene propylene films with charged, parallel-tunnel voids between the layers, which exhibit high d{sub 31} piezoelectric activity, were designed. Stripes of such piezoelectrets were exposed to mechanical stress in length direction by a seismic mass excited to vibrations. Due to the piezoelectricity of the films, a current in a terminating resistor is generated. The harvested power across the resistor amounts to about 0.2 mW for a seismic mass of 2 g and an acceleration of 1 g. In comparison with other piezoelectret or with poly(vinylidene fluoride) harvesters, the generated power referred to equal acceleration and force, is significantly larger.

• OSTI ID: 22591725
• Journal Information: Applied Physics Letters, Vol. 108, Issue 19; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DESIGN
FILMS
FLUORINATED ALIPHATIC HYDROCARBONS
LAYERS
LENGTH
MASS
PIEZOELECTRICITY
POLYVINYLS
PROPYLENE
RESISTORS
STRESSES
VOIDS