Nanogeradores Triboelétricos: Novos dispositivos para Energy Harvesting

• DOI: 10.22533/at.ed.30919160417

• Palavras-chave: Energy harvesting, nanogeradores, série triboelétrica, materiais dielétricos.

• Keywords: Energy harvesting, nanogenerators, triboelectric series, dielectric materials.

• Abstract:

  Triboelectric nanogenerator devices when submitted to mechanical effort

  generate charges of opposite polarity on their surfaces creating an electric potential

  between them, transducing mechanical energy into electrical energy. The objective

  of this work is to discuss the influence of the different materials in obtaining better

  performance triboelectric devices. The choice of dielectric materials for the construction

  of triboelectric nanogenerators is of fundamental importance in order to enhance

  their performance. To achieve the proposed objective, a test system was developed

  and constructed to analyze the response of triboelectric nanogenerator devices,

  manufactured with combinations of different dielectric materials. The best responses

  for generated power density were obtained when the samples were stimulated at

  frequencies on the range of 30 Hz to 60 Hz, and the majority of samples presented

  better response at the 40 Hz frequency. The results are very promising since there

  are several environments that present mechanical vibrations in this frequency range,

  which would allow feeding low power systems, such as sensors, with the extraction of

  mechanical energy available in the environment. Interesting combinations of commercial

  thin films for the construction of triboelectric nanogenerators have been identified; the

  best performance device constructed was with a thin film of polyamide with aluminum

  tape. This device generated a power density around 3.5 μW / cm2 for a load of 10 MΩ.

• Número de páginas: 15