Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 4, Pages 3031-3038Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am405637s
Keywords
triboelectric nanogenerator; noncontact; rotational mechanical energy; self-powered system; high stability; active sensor
Funding
- MANA
- NIMS, Japan
- thousands talents program for pioneer researcher and his innovation team, China
- Beijing City Committee of science and technology project [Z131100006013004]
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In this work, we introduced an innovative noncontact, free-rotating disk triboelectric nanogenerator (FRD-TENG) for sustainably scavenging the mechanical energy from rotary motions. Its working principle was clarified through numerical calculations of the relative-rotation-induced potential difference, which serves as the driving force for the electricity generation. The unique characteristic of the FRD-TENG enables its high output performance compared to its working at the contact mode, with an effective output power density of 1.22 W/m(2) for continuously driving 100 light-emitting diodes. Ultrahigh stability of the output and exceptional durability of the device structure. were achieved, and the reliable output was utilized for fast/effective charging of a lithium ion battery. Based on the relationship between its output performance and the parameters of the mechanical stimuli, the FRD-TENG could be employed as a self-powered mechanical sensor, for simultaneously detecting the vertical displacement and rotation speed. The FRD-TENG has superior advantages over the existing disk triboelectric nanogenerator, and exhibits significant progress toward practical applications of nanogenerators for both energy harvesting and self-powered sensor networks.
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