Replacing a Battery by a Nanogenerator with 20 V Output

Authors

  • Youfan Hu,

    1. School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
    Current affiliation:
    1. These authors contributed equally to this work.
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  • Long Lin,

    1. School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
    Current affiliation:
    1. These authors contributed equally to this work.
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  • Yan Zhang,

    1. School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
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  • Zhong Lin Wang

    Corresponding author
    1. School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
    • School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA.
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Abstract

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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.

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