[18a-B12-1~10] 12.3 Functional Materials and Novel Devices

[18a-B12-10] Controlled Shell Thickness and Proton Conductivity of Core-Shell Type Nanoparticles for Polymer Electrolyte Membranes

〇(M1)Keisuke Tabata¹, Tomohiro Nohara¹, Kazuki Koseki¹, Ryota Sato¹, Toshihiko Arita², Shusaku Nagano³, Akito Masuhara^1,4 (1.Grad. Sch. of Sci. and Eng., Yamagata Univ., 2.IMRAM, Tohoku Univ., 3.Grad. Sch. of Eng., Nagoya Univ., 4.ROEL, Yamagata Univ.)

Keywords:polymer electrolyte fuel cell, polymer electrolyte membrane, RAFT PwP

We have fabricated Core-Shell type nanoparticles by RAFT polymerization with particles (RAFT PwP) method. Silica nanoparticles are used as a Core material having mechanical strength, while poly (acrylic acid) (PAA) and polystyrene (PS) are used as a proton conductive layer and a protective layer respectively. Both materials compose the Shell layer. PAA-block-PS coated silica nanoparticles prepared by RAFT PwP is effective to solve the issue of Nafion®, which is a polymer electrolyte membrane for polymer electrolyte fuel cell (PEFC).
In this work, we focused on the Shell layer by controlling each polymer layers thickness by varying molecular weight. To calculate the proton conductivity by AC impedance measurements, we investigated the relationship between Shell thickness and proton conductivity.