Facile-controlling of the coating amount of poly(acrylic acid)-b-polystyrene coated on silica nanoparticles for polymer electrolyte membrane

Keisuke Tabata, Tomohiro Nohara, Kazuki Koseki, Kazuki Umemoto, Ryota Sato, Sasiphapa Rodbuntum, Yukina Suzuki, Ryuichiro Shimada, Satoshi Asakura, Toshihiko Arita, Akito Masuhara

    研究成果: Article査読

    3 被引用数 (Scopus)

    抄録

    We have successfully demonstrated a polymer electrolyte membrane (PEM) composed of core-shell type nanoparticles (NPs) which are silica NPs coated with poly(acrylic acid)-b-polystyrene (PAA-b-PS). In this work, for further improvement of proton conductive performance, we focus on the relationship between the coating amount of PAA and proton conduction performance. The PAA coating amount can be facilely controlled by changing the polymerization conditions. With the optimized PAA coating amount, the proton conductivity shows 9.2 × 10-4 S cm-1 at 60 °C and 98% relative humidity with low activation energy (E a = 0.33 eV). In addition, with coating PS on silica@PAA, silica@PAA-b-PS shows the proton conduction performance in a wide humidity range. It suggests that coated PS prevents the PAA swelling and suppresses flowing moisture out from the membrane. This report indicates that core-shell type NPs show great potential for a good PEM membrane in various operation conditions by simple polymerization conditions.

    本文言語English
    論文番号SIIH01
    ジャーナルJapanese journal of applied physics
    59
    SI
    DOI
    出版ステータスPublished - 2020 6 1

    ASJC Scopus subject areas

    • 工学(全般)
    • 物理学および天文学(全般)

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