[15a-PA3-1~11] 3.8 Optical measurement, instrumentation, and sensor

[15a-PA3-11] Analysis of drying process of Nafion membrane by Coherent Anti-stokes Raman Scattering spectroscopy

〇Atsushi Syouji¹, Masaru Sakai², Masanori Hara³, Hisayoshi Matsushima⁴, Junji Inukai³ (1.CCST Univ. Yamanashi, 2.Univ. of Yamanashi, 3.FC Nano Univ. Yamana, 4.Hokkaido Univ.)

Keywords:CARS spectroscopy,O-H stretching vibration mode of water,drying process

We are studying time evolution of humidity in a electrolyte (nafion) membrane in a fuel cell utilizing CARS spectroscopy. In this study, we found the water in the membrane exist three different chemical bonding states, and these states are vaporized almost independently, but a little dependency are also founded.