title: Simultaneously Harvesting Thermal and Mechanical Energies based on Flexible Hybrid Nanogenerator for Self-Powered Cathodic Protection.
abstract: Metal corrosion occurs anytime and anywhere in nature and the corrosion prevention has a great significance everywhere in national economic development and daily life. Here, we demonstrate a flexible hybrid nanogenerator (NG) that is capable of simultaneously or individually harvesting ambient thermal and mechanical energies and used for a self-powered cathodic protection (CP) system without using an external power source. Because of its double peculiarities of both pyroelectric and piezoelectric properties, a polarized poly(vinylidene fluoride) (PVDF) film-based NG was constructed to scavenge both thermal and mechanical energies. As a supplementary, a triboelectric NG was constructed below the pyro/piezoelectric NG to grab ambient mechanical energy. The output power of the fabricated hybrid NG can be directly used to protect the metal surface from the chemical corrosion. Our results not only verify the feasibility of self-powered CP-based NGs, but also expand potential self-powered applications.
authors.affiliation: State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, China.
authors.forename: Hulin
authors.initials: H
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, China.
authors.forename: Shangjie
authors.initials: S
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, China.
authors.forename: Guang
authors.initials: G
authors.lastname: Yao
authors.affiliation: State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, China.
authors.forename: Zhenlong
authors.initials: Z
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, China.
authors.forename: Yuhang
authors.initials: Y
authors.lastname: Xie
authors.affiliation: State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, China.
authors.forename: Yuanjie
authors.initials: Y
authors.lastname: Su
authors.affiliation: Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University , Chengdu 610031, China.
authors.forename: Weiqing
authors.initials: W
authors.lastname: Yang
authors.affiliation: Department of Mathematics and Physics, Officers College of the Chinese People's Armed Police Forces , Chengdu 610213, China.
authors.forename: Chunhua
authors.initials: C
authors.lastname: Zheng
authors.affiliation: State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Lin
keywords: cathodic protection; hybrid nanogenerator; mechanical energy; self-powered; thermal energy