Toward Large-Scale Energy Harvesting by a Nanoparticle-Enhanced Triboelectric Nanogenerator
2013; American Chemical Society; Volume: 13; Issue: 2 Linguagem: Inglês
10.1021/nl4001053
ISSN1530-6992
AutoresGuang Zhu, Zong‐Hong Lin, Qingshen Jing, Peng Bai, Caofeng Pan, Ya Yang, Yusheng Zhou, Zhong Lin Wang,
Tópico(s)Innovative Energy Harvesting Technologies
ResumoThis article describes a simple, cost-effective, and scalable approach to fabricate a triboelectric nanogenerator (NG) with ultrahigh electric output. Triggered by commonly available ambient mechanical energy such as human footfalls, a NG with size smaller than a human palm can generate maximum short-circuit current of 2 mA, delivering instantaneous power output of 1.2 W to external load. The power output corresponds to an area power density of 313 W/m(2) and a volume power density of 54,268 W/m(3) at an open-circuit voltage of ~1200 V. An energy conversion efficiency of 14.9% has been achieved. The power was capable of instantaneously lighting up as many as 600 multicolor commercial LED bulbs. The record high power output for the NG is attributed to optimized structure, proper materials selection and nanoscale surface modification. This work demonstrated the practicability of using NG to harvest large-scale mechanical energy, such as footsteps, rolling wheels, wind power, and ocean waves.
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