Abstract
The rapid development of Internet of Things and artificial intelligence brings increasing attention on the harvesting of distributed energy by using triboelectric nanogenerator (TENG), especially the direct current TENG (DC-TENG). It is essential to select appropriate triboelectric materials for obtaining a high performance TENG. In this work, we provide a set of rules for selecting the triboelectric materials for DC-TENG based on several basic parameters, including surface charge density, friction coefficient, polarization, utilization rate of charges, and stability. On the basis of the selection rules, polyvinyl chloride, used widely in industry rather than in TENG, is selected as the triboelectric layer. Its effective charge density can reach up to ~8.80 mC m−2 in a microstructure-designed DC-TENG, which is a new record for all kinds of TENGs. This work can offer a basic guideline for the triboelectric materials selection and promote the practical applications of DC-TENG.
Highlights
The rapid development of Internet of Things and artificial intelligence brings increasing attention on the harvesting of distributed energy by using triboelectric nanogenerator (TENG), especially the direct current TENG (DC-TENG)
Taking the surface charge density, friction coefficient, strength of polarization, the utilization rate of triboelectric charges, and stability as basic parameters, we find that the triboelectric material of polyvinyl chloride (PVC) film, which is widely utilized in the industry but not in TENG field, showed an excellent DC output performance
The working mechanism of DC-TENG is shown in Fig. 1a, which couples the contact electrification and electrostatic breakdown effects
Summary
The rapid development of Internet of Things and artificial intelligence brings increasing attention on the harvesting of distributed energy by using triboelectric nanogenerator (TENG), especially the direct current TENG (DC-TENG). We provide a set of rules for selecting the triboelectric materials for DC-TENG based on several basic parameters, including surface charge density, friction coefficient, polarization, utilization rate of charges, and stability. Its effective charge density can reach up to ~8.80 mC m−2 in a microstructure-designed DC-TENG, which is a new record for all kinds of TENGs. This work can offer a basic guideline for the triboelectric materials selection and promote the practical applications of DC-TENG. Taking the surface charge density, friction coefficient, strength of polarization, the utilization rate of triboelectric charges, and stability as basic parameters, we find that the triboelectric material of polyvinyl chloride (PVC) film, which is widely utilized in the industry but not in TENG field, showed an excellent DC output performance. The proposed comprehensive model for selecting triboelectric materials can be used for DCTENG to achieve high-performance DC-TENG, and can provide a guideline for the applications of DC-TENG in practice
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