Triboelectric Nanogenerator

    Triboelectric nanogenerator (TNG) is environment friendly energy generator which using mechanical friction force. During the friction between two dissimilar materials, their surface becomes electrically charged. When TNG is separated, strong dipole moments are formed by generated surface charge, which induce electrons flow through the external circuit. There are four energy harvesting mode. 1) Vertical contact mode 2) Lateral sliding mode 3) Single electrode mode 4) Freestanding triboelectric layer mode. We have investigated all harvesting mode and material investigation.
  • Structure research for high power TNG
  • Structure research for environment adaptive TNG
  • Adv. Mater., Vol. 29, p5037 (2014)

    ACS Nano, Vol. 9, p3501 (2015)

  • Material research for high mechanical durable TNG
  • Material research for high power TNG
  • Energy Environ. Sci., Vol. 8, p3605 (2015)

    Adv. Funct. Mater., DOI: 10.1002/adfm.201505088(2016)



    Piezoelectric Nanogenerator

        Piezoelectric nanogenerator (PNG) is eco-friendly energy generator which using mechanical force. Piezoelectricity is defined as a change in electric polarization with a change in applied stress. Only, specific material which has non central symmetric crystal structure or ferroelectric property, generate energy during polarization change. There are two harvesting mode 1) Vertical force mode 2) Bending mode. We have researched all harvesting mode and material investigation.
  • Structure research for ultra-sensitive PNG
  • Structure research for increasing harvesting energy density
  • Energy Environ. Sci., Vol.6, p169 (2013)

    Adv. Funct. Mater., Vol. 25, p3203 (2015)

    Adv. Funct. Mater., Vol. 24, p37 (2014)

    Adv. Funct, Mater., Vol. 24, p6262 (2014)

  • Material research for high output PNG
  • Material research for investing new piezoelectric materials
  • Nano Energy, Vol. 8, p165 (2014)

    Nano Lett., Vol. 12, p1959 (2012)



    Hybrid Nanogenerator

        Hybrid nanogenerator is important and efficient way to enhanced energy harvestor performance. Piezoelectric, Triboelectric, Photovoltaic effect, Pyroelectric, Thermoelectric, Electromagnetic induction, Electret, Ferroelectric material, all energy harvesting system & material can be coupled and complementally with other energy generator. We have investigated how to hybrid & coupled each energy generator system.
  • Ferroelectric & photovoltaic coupling system
  • Piezoelectric & photovoltaic hybrid system
  • Adv. Mater., Vol. 26, p5619 (2014)

    Nano Energy, Vol. 12, p547 (2015)

  • Piezoelectric & pyroelectric coupling system
  • Piezo & Triboelectric 2D Material sensor
  • Adv. Energy Mater., Vol. 5, 1500704 (2015)

    Adv. Mater., Vol. 27, p3411 (2015)