Effects of CO2 concentration and electric current on the ionic conductivity of anion exchange membranes for fuel cells

DOI Web Site Web Site 被引用文献1件 参考文献22件
  • KIMURA Takeshi
    Department of Innovative and Engineered Materials, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology
  • YAMAZAKI Yohtaro
    Department of Innovative and Engineered Materials, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology

書誌事項

タイトル別名
  • Effects of CO<sub>2</sub> Concentration and Electric Current on the Ionic Conductivity of Anion Exchange Membranes for Fuel Cells

この論文をさがす

抄録

The dependences of the CO2 concentration and the effects of electric current on the ionic conduction properties of anion exchange membranes (AEMs) in fuel cells were investigated. The ionic conductivity of AEMs was measured by AC impedance method at 40°C in various atmospheres. After the initial ion exchange process, contact with air containing 38% CO2 caused the ionic conductivity of AEMs to decrease to 40% of the value measured immediately after the initial ion exchange process. However, exposing the AEMs in a CO2-free air atmosphere increased the ionic conductivity to 50% of the value measured immediately after the initial ion exchange process. Then 89 C cm−2 of direct current (DC) was applied in a CO2-free atmosphere to the AEMs. The ionic conductivity increased close to the value measured immediately after the initial ion exchange process. These results are discussed by assuming that bicarbonate (HCO3−) is produced in the AEMs.

収録刊行物

  • Electrochemistry

    Electrochemistry 79 (2), 94-97, 2011

    公益社団法人　電気化学会

被引用文献 (1)*注記

もっと見る

参考文献 (22)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ