[25a-1BC-1~11] 12.2 Characterization and Materials Physics

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[25a-1BC-6] Analyzing output power of P(VDF-TrFE) dipolar-energy-based triboelectric generators by using thermally stimulated current measurement

〇Yusuke Okamoto¹, Dai Taguchi¹, Takaaki Manaka¹ (1.Tokyo tech)

Keywords:

triboelectric generator,thermally stimulated current,P(VDF-TrFE)

Research on triboelectric power generation is developing into an unconventional power source using new materials and device structures. In addition to electrostatic methods, power generation by rotation of dipoles has also been discussed. We have proposed a power generation model in which oriented permanent dipoles are depolarized to supply power to an external load. In this model, the power generation performance is determined by the dipolar relaxation time of the material τ (current source I_s=P₀A/τ, internal conductance G_i=C_s/τ, P₀: initial polarization, A: electrode area, C_s: static capacitance). In this presentation, the origin of the peak at -30ºC in thermally stimulated current (TSC) measurements of P(VDF-TrFE) with permanent dipole is clarified experimentally as dipole depolarization from the symmetry of the current waveform, and the maximum power P_m of the I-V characteristics is investigated from the relaxation time τ.