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Water Transport during Ion Conduction in Anion-Exchange and Cation-Exchange Membranes
| Title: | Water Transport during Ion Conduction in Anion-Exchange and Cation-Exchange Membranes |
| Authors: | Yamanaka, Toshiro Browse this author | | Takeguchi, Tatsuya Browse this author | | Takahashi, Hiroki Browse this author | | Ueda, Wataru Browse this author |
| Keywords: | electrolytes | | ion exchange | | ionic conductivity | | membranes | | water |
| Issue Date: | 14-May-2009 |
| Publisher: | The Electrochemical Society |
| Journal Title: | Journal of the Electrochemical Society |
| Volume: | 156 |
| Issue: | 7 |
| Start Page: | B831 |
| End Page: | B835 |
| Publisher DOI: | 10.1149/1.3129618 |
| Abstract: | Water transport during ion conduction through an anion-exchange membrane (AEM) immersed in an aqueous solution of HNO3 and KOH was investigated. We have developed an apparatus to accurately measure small changes in volumes of the aqueous solution at each side of the membrane by capillary tubes during the passage of an electronic current through the membrane. In contrast to the previously reported apparatus, the present apparatus can be applied to an AEM in various aqueous solutions of electrolytes, and measurements under conditions close to those in actual solid alkaline fuel cells are therefore possible by using alkaline solutions. The water-transport number for AEM in HNO3 was larger than that in KOH, indicating the importance of selecting the appropriate aqueous solution of electrolytes. It is possible to determine whether anions or cations are conductors in electrolyte membranes with unknown properties. © 2009 The Electrochemical Society. |
| Rights: | © The Electrochemical Society, Inc. 2009. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in J. Electrochem. Soc., 156(7), B831-B835 (2009). |
| Type: | article |
| URI: | http://hdl.handle.net/2115/38860 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 山中 俊朗
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