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| Presentation | 2006-01-20 09:50 [Invited Talk] Research and Development of High Durable Hydrocarbon Polymer Electrolyte Membrane for Solid Polymer Electrolyte Fuel Cells Tooru Koyama, Makoto Morishima, Shigeo Suzuki, Hidetoshi Honbou (Hitachi Lab., Hitachi.) Link to ES Tech. Rep. Archives:  CPM2005-172 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Upgraded efficiency, lengthened life and reduced cost are strongly desired for full-scale popularization of solid polymer electrolyte fuel cells (PEFC). Though a the fluorine electrolyte membrane is used as a solid polymer electrolyte membrane (PEM) in which cost specific gravity is high in main component of PEFCs, and there is the drastic cost reduction in the difficult situation. Moreover, creep transformation, which does not return under a pressurizing, accumulating PEFC system, occurs in the present fluorine PEMs and there is concern that a gas-leak could occur. The development of high-efficient, high durability and low-cost hydrocarbon PEM for the real popularization of PEFC is desired. Generally, a low-cost hydrocarbon PEM is being synthesized by sulfonating the aromatic ring of high oxidation resistant engineering plastics with the purpose of the ionic conductivity addition. The sulfonic acid group, which connected in aromatic ring directly, tends to disassociate readily under PEFC environment. Desulfonation control technology for aromatic hydrocarbon PEMs model compounds was examined in fiscal year 2001. As the result, it was proven that the elimination of the sulfonate group could be suppressed by introducing alkylene sulfonic acid group which is made to intervene the alkylene unit between sulfonic acid group and aromatic ring, instead of sulfonic acid groups". New aromatic hydrocarbon polymer electrolyte membrane (HSAM) in which alkylene sulfonic acid radicals were introduced into high oxidation resistant engineering plastics. Ionic conduction resistances of HSAMs are 50mΩ・cm2 or less (85%RH at 70℃), elastic modulus of HSAMs become 2.1GPa (85%RH at 70℃), 2.3 GPa (30%RH at 70℃), hydrogen gas crossovers of HSAMs become 1E-7cm3/ cm・s or less and satisfy the development target values. Ionic conductivity addition units of HSAMs were stable in oxidized examination by the 0.1wt% hydrogen peroxide water of 80℃ for 800 hours. Ionic conductivity addition units of HSAMs were similarly stable with a fluorine PEM, even if it was retained in 1 mol/l sulfuric acid aqueous solution of 80℃ for 11,200 hours. Supposing that time when the ion conduction addition units decreased by 10% is life, the presumption life of the HSAM membrane satisfied 40,000 hours or more of the target at 50,000-100,000 hours. The conditions manufacturing of membrane /electrode assemble (MEA) was examined, and the output voltage of simple battery cell which built in MEA produced using HSAMs satisfied 750mV at 70℃, 250mA/cm2 current density and satisfies the development target value. The single fuel cell, which installed the HSAM film, generated continuously electricity 2000 hours or more stably. Because methanol permeability of the HSAM membrane is small, the HSAM membranes have been developed to a fuel cell for mobile. This study takes trust of The New Energy and Industrial Technology Development Organization (NEDO) and carried it out and thanks the relations’ members. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Hydrocarbon Polymer Electrolyte Membrane / Alkylene sulfonic acid / High Durability / PEFC / DMFC / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 105, no. 539, CPM2005-172, pp. 7-12, Jan. 2006. | |
| Paper # | CPM2005-172 | |
| Date of Issue | 2006-01-13 (EE, CPM) | |
| ISSN | Print edition: ISSN 0913-5685 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | Link to ES Tech. Rep. Archives: CPM2005-172 |
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| Conference Information | |
| Committee | EE CPM |
| Conference Date | 2006-01-20 - 2006-01-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | CPM |
| Conference Code | 2006-01-EE-CPM |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Research and Development of High Durable Hydrocarbon Polymer Electrolyte Membrane for Solid Polymer Electrolyte Fuel Cells |
| Sub Title (in English) | |
| Keyword(1) | Hydrocarbon Polymer Electrolyte Membrane |
| Keyword(2) | Alkylene sulfonic acid |
| Keyword(3) | High Durability |
| Keyword(4) | PEFC |
| Keyword(5) | DMFC |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Tooru Koyama |
| 1st Author's Affiliation | Hitachi, Ltd., Hitachi research Laboratory (Hitachi Lab., Hitachi.) |
| 2nd Author's Name | Makoto Morishima |
| 2nd Author's Affiliation | Hitachi, Ltd., Hitachi research Laboratory (Hitachi Lab., Hitachi.) |
| 3rd Author's Name | Shigeo Suzuki |
| 3rd Author's Affiliation | Hitachi, Ltd., Hitachi research Laboratory (Hitachi Lab., Hitachi.) |
| 4th Author's Name | Hidetoshi Honbou |
| 4th Author's Affiliation | Hitachi, Ltd., Hitachi research Laboratory (Hitachi Lab., Hitachi.) |
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| Speaker | Author-1 |
| Date Time | 2006-01-20 09:50:00 |
| Presentation Time | 50 minutes |
| Registration for | CPM |
| Paper # | EE2005-48, CPM2005-172 |
| Volume (vol) | vol.105 |
| Number (no) | no.538(EE), no.539(CPM) |
| Page | pp.7-12 |
| #Pages | 6 |
| Date of Issue | 2006-01-13 (EE, CPM) |
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