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Paper Abstract and Keywords
Presentation 2012-01-26 14:45
Development of methanol sensor for direct methanol fuel cells using a shear horizontal surface acoustic wave
Jun Kondoh, Saburo Endo (Shizuoka Univ.), Katsuhiko Satoh, Naomi Sawada (Suzuki), Koji Kano, Toshimasa Mori, Hiromi Yatsuda (JRC) US2011-92 EA2011-110
Abstract (in Japanese) (See Japanese page) 
(in English) Concentration of methanol (MeOH) solution is measured using a shear horizontal surface acoustic wave (SH-SAW) sensor. The SH-SAW sensor can detect both viscosity and dielectric constant. When 36YX-LiTaO3 is used, a high sensitive MeOH sensor for detecting the dielectric constant is realized. We have been developing the MeOH sensor for a direct methanol fuel cell. Bubbles are generated at high temperature and the sensor responses are influenced. The influence of bubbles is discussed on the basis of experiment and numerical calculation. Both results indicate that phase shift due to the bubble on the free surface is larger than on the metalized surface. Then the long time stability at different temperature is measured. Increasing the temperature, sensor responses vary widely due to bubbles. However, fluctuations are reduced using the pump. A formic acid is generated during an electrode reaction. To reduce the influence of the formic acid, sensor sensitivities are calculated and found that high frequency SH-SAW sensor must be used.
Keyword (in Japanese) (See Japanese page) 
(in English) shear horizontal surface acoustic wave / direct methanol fuel cell / methanol sensor / bubble / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 401, US2011-92, pp. 35-40, Jan. 2012.
Paper # US2011-92 
Date of Issue 2012-01-19 (US, EA) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF US2011-92 EA2011-110

Conference Information
Committee EA US  
Conference Date 2012-01-26 - 2012-01-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Kansai Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) [Joint Meeting on Acoustics and Ultrasonics Subsociety] Engineering/Electro Acoustics, Ultrasonic and Underwater Acoustics,and Related Topics 
Paper Information
Registration To US 
Conference Code 2012-01-EA-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of methanol sensor for direct methanol fuel cells using a shear horizontal surface acoustic wave 
Sub Title (in English)  
Keyword(1) shear horizontal surface acoustic wave  
Keyword(2) direct methanol fuel cell  
Keyword(3) methanol sensor  
Keyword(4) bubble  
1st Author's Name Jun Kondoh  
1st Author's Affiliation Shizuoka University (Shizuoka Univ.)
2nd Author's Name Saburo Endo  
2nd Author's Affiliation Shizuoka University (Shizuoka Univ.)
3rd Author's Name Katsuhiko Satoh  
3rd Author's Affiliation Suzuki Motor Corporation (Suzuki)
4th Author's Name Naomi Sawada  
4th Author's Affiliation Suzuki Motor Corporation (Suzuki)
5th Author's Name Koji Kano  
5th Author's Affiliation Japan Radio Co., Ltd. (JRC)
6th Author's Name Toshimasa Mori  
6th Author's Affiliation Japan Radio Co., Ltd. (JRC)
7th Author's Name Hiromi Yatsuda  
7th Author's Affiliation Japan Radio Co., Ltd. (JRC)
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Date Time 2012-01-26 14:45:00 
Presentation Time 30 
Registration for US 
Paper # IEICE-US2011-92,IEICE-EA2011-110 
Volume (vol) IEICE-111 
Number (no) no.401(US), no.402(EA) 
Page pp.35-40(US), pp.37-42(EA) 
#Pages IEICE-6 
Date of Issue IEICE-US-2012-01-19,IEICE-EA-2012-01-19 

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