[21p-P18-1~40] 12.3 Functional Materials and Novel Devices

▲ [21p-P18-40] Influence of Reactant Gases on Ionomer’s Proton Conductivity on Quartz

〇(PC)Rahul Bhardwaj¹, Isao Shitanda², Yuki Nagao¹ (1.JAIST, 2.Tokyo Univ. of Sci.)

Keywords:Gases dependent H+ conductivity, Nafion thin-film, PEMFC

Ionomer thin film plays a crucial role as ionic conductor at cathode catalyst layer and strongly influences the performance of a PEMFC. The electrochemical performance can be limited by the transport of protons, electrons, or reactant gases (H₂ and O₂) to the catalyst sites. Since the ionomer film coating the carbon-supported Pt-based catalysts (Pt/C) is distributed in spatially heterogeneous manner at electrode, recently researchers are focusing on substrate dependent attribution of proton (H⁺) conductivity. However, the effect of reactant gases on ionomer H⁺ conductivity is barely reported. In this work we are investigating the influence of reactant gases on Nafion thin-film H⁺ conductivity at quartz using Pt IDEs.