Dear Colleagues,

Efficient conversion of ambient neglected energy into electricity is advisable to achieve the self-powered operation of intelligent sensors and meet the needs for sustainable development. In particular, the nanogenerators based on the triboelectric, piezoelectric, pyroelectric, and thermoelectric effects possess incomparable superiority in scavenging micro-nano energy. As the emerging technology of nanoenergy, the nanogenerators with different materials and structures have attracted more and more attention in the past decade.  Although great progress has been made in terms of output power density and energy conversion efficiency, the total electric power of nanogenerators is still limited. What is the way to further improve the output performance of these types of nanogenerators?

The available thermal, light and mechanical energies exist simultaneously in the environment and the simultaneous/individual conversion of the several kinds of energies can be realized through the coupling of multiple effects. By integrating different nanogenerators, the hybridized nanogenerator can provide a promising strategy to significantly enhance the total electric power.

Meanwhile, some energy materials may have multiple physical properties, which can be utilized to fabricate coupled nanogenerators for harvesting multiple energies. For example, the simultaneous scavenging of mechanical and thermal energies can be realized by the hybridized nanogenerator based on the triboelectric–piezoelectric–pyroelectric effects. At the same time, the thermal energy can be harvested more effectively by combining the thermoelectric and the pyroelectric effect. The hybridized nanogenerator exhibits much better output performances as compared with that of the individual nanogenerator.

This Special Issue focuses on the latest advancements realized in the field of nanogenerators and on their applications in the multiple energy scavenging.

We invite papers on recent technical developments of nanogenerators based on the single effect or multi-effects coupling, as well as reviews and case studies relevant to show the future direction of nanogenerators.

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

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• Nanoenergy
• Nanogenerators
• Sensors
• Piezoelectric materials and devices
• Triboelectric materials and devices
• Pyroelectric materials and devices
• Thermoelectric materials and devices