[16p-M_103-1~11] 12.3 Functional Materials and Novel Devices

4:30 PM - 4:45 PM JST(7:30 AM - 7:45 AM UTC)

[16p-M_103-9] Overoxidation of PEDOT/PSS films between metal electrodes

〇(D)Tsutomu Kaneko^1,2, Manaka Miyake¹, Takeshi Shimomura¹ (1.Tokyo Univ. Agri. Technol., 2.Rubycon Corp.)

Keywords:

PEDOT,aluminum electrolytic capacitor,conductive polymer

PEDOT/PSS is widely used as a cathode material in aluminum electrolytic capacitors. However, degradation of PEDOT/PSS, such as overoxidation, can lead to loss of capacitor performance. In this study, overoxidation of PEDOT/PSS films was evaluated using cells that reproduced the capacitor's singlelayer structure. Raman scattering measurements indicated that the PEDOT/PSS film was strongly oxidized. Furthermore, the yellow product formed after overoxidation is likely a low-molecular-weight EDOT oligomer.