Tubular Type Direct Methanol Fuel Cell for in situ NMR Diagnosis

Title
Tubular Type Direct Methanol Fuel Cell for in situ NMR Diagnosis
Authors
조한익엄명섭한기성한옥희하흥용김수길
Keywords
직접메탄올연료전지; 핵자기공명; 제자리분석; 원통형; DMFC; NMR; Flow field; in situ analysis; Mass transport
Issue Date
2009-11
Publisher
한국전기화학회지; Journal of the Korean Electrochemical Society
Citation
VOL 12, NO 4, 329-334
Abstract
This study is to develop a fuel cell system applicable to an in situ NMR (Nuclear magnetic resonance) diagnosis. The in situ NMR can be used in real time monitoring of various reactions occurring in the fuel cell, such as oxidation of fuel, reduction of oxygen, transport phenomena, and component degradation. The fuel cell for this purpose is, however, to be operated in a specifically designed tubular shape toroid cavity detector (TCD), which constrains the fuel cell to have a tubular shape. This may cause difficulties in effective mass transport of reactants/products and uniform distribution of assembly pressure. Therefore, a new flow field designed in a particular way is necessary to enhance the mass transport in the tubular fuel cell. In this study, a tubularshaped close-type flow field made of non-magnetic material is developed. With this flow field, oxygen is effectively delivered to the cathode surface and the produced water is readily removed from the membrane-electrode assembly to prevent flooding. The resulting DMFC (direct methanol fuel cell) outperforms the open-type flow field and exhibits 36 mW/cm2 even at room temperature.
URI
http://pubs.kist.re.kr/handle/201004/36803
ISSN
1229-1935
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KIST Publication > Article
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