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Replacing a Battery by a Nanogenerator with 20 V Output
Author(s) -
Hu Youfan,
Lin Long,
Zhang Yan,
Wang Zhong Lin
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201103727
Subject(s) - materials science , nanogenerator , battery (electricity) , nanotechnology , optoelectronics , composite material , power (physics) , piezoelectricity , physics , quantum mechanics
Replacing batteries by nanogenerators (NGs) in small consumer electronics is one of the goals in the emerging field of self‐powered nanotechnology. We show that the maximum measured output voltage of an NG optimized with pretreatments on the as‐grown ZnO nanowire films reaches 20 V and the output current exceeds 6 μA, which corresponds to a power density of 0.2 W cm −3 . The NG is also demonstrated to replace a battery for driving a electronic watch.