Jump to main content
Jump to site search

Issue 26, 2018
Previous Article Next Article

Ferromagnetic nanoparticle-embedded hybrid nanogenerator for harvesting omnidirectional vibration energy

Author affiliations

Abstract

A new form of generator known as the triboelectric nanogenerator (TENG) has recently been suggested as a simple and low-cost solution to scavenge ambient mechanical energy. Although there have been substantial advances in TENGs over the past few years, the power efficiency of TENGs must be enhanced further before they can be practically applied. In the present study, we report a ferromagnetic nanoparticle-embedded hybrid nanogenerator (FHNG) which operates based on both triboelectricity and electromagnetic induction. A TENG and an electromagnetic generator (EMG) efficiently cooperate to generate electrical energy from the same motion, i.e., the vibration of a synthesized nanoparticle. A surface-functionalized ferric oxide nanoparticle, which has strong ferromagnetism and high triboelectricity, was produced by a simple surface-coating process. The measured electrical characteristics revealed that the output voltage of both the TENG and the EMG components increased by approximately 50 times and by twofold, respectively, after the surface functionalization step. Moreover, when constant vibration of 3 Hz is applied to the fabricated FHNG, the TENG and EMG components correspondingly generated output power of 133.2 μW at a load resistance of 100 MΩ and 6.5 μW at a load resistance of 200 Ω. The output power per unit mass from the FHNG is greater than that according to the arithmetic sum of the individual TENG and EMG components, demonstrating synergy between the two components. Furthermore, the device can generate stable output under various vibration directions, amplitudes, and frequencies due to the fluid-like characteristics of the powder. The packaged structure also securely protects the device from external humidity and dust. Connected to a rationally designed power management circuit, a digital clock was turned on solely by the fabricated FHNG.

Graphical abstract: Ferromagnetic nanoparticle-embedded hybrid nanogenerator for harvesting omnidirectional vibration energy

Back to tab navigation

Supplementary files

Publication details

The article was received on 12 Mar 2018, accepted on 15 Jun 2018 and first published on 18 Jun 2018


Article type: Communication
DOI: 10.1039/C8NR02039F
Citation: Nanoscale, 2018,10, 12276-12283

  •   Request permissions

    Ferromagnetic nanoparticle-embedded hybrid nanogenerator for harvesting omnidirectional vibration energy

    D. Kim, I. K. Jin and Y. Choi, Nanoscale, 2018, 10, 12276
    DOI: 10.1039/C8NR02039F

Search articles by author

Spotlight

Advertisements