One-pot synthesis of inorganic/organic hybrid membranes from organoalkoxysilane, hydroimidazole derivative, and cyclic sulfonic acid ester

Koji Takahashi, Junji Umeda, Koichiro Hayashi, Wataru Sakamoto, Toshinobu Yogo

研究成果: ジャーナルへの寄稿学術誌査読

7 被引用数 (Scopus)

抄録

Inorganic/organic hybrid membranes for use in fuel cells were synthesized from 3-glycidoxypropyltrimethoxysilane (GPTMS), N-(3-triethoxysilylpropyl)-4,5-dihydroimidazole (NESPHI), and 1,3-propanesultone (PS) through a simple one-pot process. Fourier transform infrared spectroscopy and 13C nuclear magnetic resonance (NMR) measurements confirmed the sultone ring-opening reaction and formation of chemical bonds among the starting materials. The 29Si NMR measurements revealed that a siloxane network had formed within the hybrid membranes via the sol–gel process. The thermogravimetric analysis indicated that the synthesized membranes were thermally stable up to 170 °C. The conductivity of the membranes at low levels of relative humidity (RH) was improved by the addition of NESPHI. The best cell performance at intermediate temperatures and low RHs was achieved by the membrane electrode assembly using the NESPHI/GPTMS/PS = 1:3:4 hybrid membrane with a catalyst ink consisting of Nafion and the hybrid solution at a 1:1 ratio. At 120 °C and 53 % RH, the power density of the NESPHI/GPTMS/PS = 1:3:4 membrane was 6.6 mW/cm2.

本文言語英語
ページ(範囲)3398-3407
ページ数10
ジャーナルJournal of Materials Science
51
7
DOI
出版ステータス出版済み - 4月 1 2016
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 材料科学一般
  • 材料力学
  • 機械工学

フィンガープリント

「One-pot synthesis of inorganic/organic hybrid membranes from organoalkoxysilane, hydroimidazole derivative, and cyclic sulfonic acid ester」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル