Influence of Confined Polymer Structure on Proton Transport Property in Sulfonated Polyimide Thin Films

• KRISHNAN Karthik

  School of Materials Science, Japan Advanced Institute of Science and Technology

• YAMADA Tomoaki

  Department of Materials, Physics and Energy Engineering, Nagoya University

• IWATSUKI Hiroko

  Department of Molecular Design & Engineering, Graduate School of Engineering, Nagoya University

• HARA Mitsuo

  Department of Molecular Design & Engineering, Graduate School of Engineering, Nagoya University

• NAGANO Shusaku

  Nagoya University Venture Business Laboratory, Nagoya University

• OTSUBO Kazuya

  Division of Chemistry, Graduate School of Science, Kyoto University

• SAKATA Osami

  Synchrotron X-ray Station at SPring-8, National Institute for Materials Science (NIMS)

• FUJIWARA Akihiko

  Japan Synchrotron Radiation Research Institute (JASRI), SPring-8

• KITAGAWA Hiroshi

  Division of Chemistry, Graduate School of Science, Kyoto University

• NAGAO Yuki

  School of Materials Science, Japan Advanced Institute of Science and Technology

Abstract

The organized structure and proton transport property in sulfonated polyimide (SPI) thin film have been studied, much less is known at the interfacial charge transport during confinement of such materials. The proton conductivity of SPI thin film is correlated well with the highly oriented polymer structures as determined by infrared (IR) p-polarized multiple-angle incidence resolution spectrometry (p-MAIRS) and in situ RH dependent synchrotron grazing incidence X-ray diffraction (GI-XRD). The high proton conductivity of 2.8 × 10⁻¹ S cm⁻¹ at 80°C and 90% RH was achieved in the highly oriented SPI thin film. In contrast, the bulk SPI showed the drop of conductivity value at high relative humidity region, which is due to the significant structural disorder accompanied by the strong interaction between the sulfonic acid side chains and water molecules.

Journal

• Electrochemistry

  Electrochemistry 82 (10), 865-869, 2014

  The Electrochemical Society of Japan

Keywords

• Conductivity Enhancement
• Confined Polymer Thin Film
• Organized Structure

Details

• CRID: 1390282681474736384
• NII Article ID: 120006027366
• NII Article ID: 130004697491
• NII Article ID: 40020212741
• NII Book ID: AN00151637
• DOI: 10.5796/electrochemistry.82.865
• ISSN: 21862451
• ISSN: 13443542
• NDL BIB ID: 025815742
• Web Site: http://hdl.handle.net/10119/14065
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025815742
• Web Site: https://www.jstage.jst.go.jp/article/electrochemistry/82/10/82_14-E00052/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Allowed