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Paper Abstract and Keywords
Presentation 2023-03-06 09:00
Volumetric Energy Density of A Polymer Electrolyte Fuel Cell System using NaBH4 and H2O as Hydrogen Source Considering The Amount of Recovered Water Generated during Power Generation
Ryosuke Masuo, Nobukazu Hoshi (TUS) EE2022-55
Abstract (in Japanese) (See Japanese page) 
(in English) NaBH$_4$ is attracting attention as a hydrogen source for fuel cells because it has a high volumetric energy density, is stable as a powder at room temperature and pressure, and does not produce carbon dioxide during hydrogen production. The volumetric energy density of a polymer electrolyte fuel cell system (PEFC) fueled by NaBH$_4$ and water as hydrogen sources are lowered because more water than the theoretical amount of water is fed into the system to allow NaBH$_4$ and water to react sufficiently. As a solution to this issue, this paper examines the effectiveness of recovering water, a byproduct of fuel cell power generation, and reusing it as fuel in a PEFC fueled by NaBH$_4$ and water. As a result, for the PEFC used in this study, a stoichiometric ratio of 2.0 for the air flow rate and a fuel cell cooling water temperature of 70$ {}^circmathrm{C}$ were suitable. It was also found that the volumetric energy density can be significantly improved by attaching a fan of less than $1 %$ of the output power to the cathode-side condenser.
Keyword (in Japanese) (See Japanese page) 
(in English) Sodium tetrahydroborate（NaBH4） / water / polymer electrolyte fuel cell / hydrogen / volumetric energy density / hydrogen generator / hydrogen source /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 418, EE2022-55, pp. 1-6, March 2023.
Paper # EE2022-55 
Date of Issue 2023-02-27 (EE) 
ISSN Online edition: ISSN 2432-6380
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 EE2022-55

Conference Information
Committee EE  
Conference Date 2023-03-06 - 2023-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EE 
Conference Code 2023-03-EE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Volumetric Energy Density of A Polymer Electrolyte Fuel Cell System using NaBH4 and H2O as Hydrogen Source Considering The Amount of Recovered Water Generated during Power Generation 
Sub Title (in English)  
Keyword(1) Sodium tetrahydroborate（NaBH4）  
Keyword(2) water  
Keyword(3) polymer electrolyte fuel cell  
Keyword(4) hydrogen  
Keyword(5) volumetric energy density  
Keyword(6) hydrogen generator  
Keyword(7) hydrogen source  
Keyword(8)  
1st Author's Name Ryosuke Masuo  
1st Author's Affiliation Tokyo University of Science (TUS)
2nd Author's Name Nobukazu Hoshi  
2nd Author's Affiliation Tokyo University of Science (TUS)
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Speaker Author-1 
Date Time 2023-03-06 09:00:00 
Presentation Time 25 minutes 
Registration for EE 
Paper # EE2022-55 
Volume (vol) vol.122 
Number (no) no.418 
Page pp.1-6 
#Pages 6 
Date of Issue 2023-02-27 (EE) 

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