Journal
APPLIED ENERGY
Volume 111, Issue -, Pages 441-448Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2013.04.091
Keywords
Air-blowing PEMFC; Cathode channel size; Cell performance; Water management; Operation region
Categories
Funding
- NRF
- MEST [2009-0086642]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) [20124010203250]
- Korea government Ministry of Trade, Industry and Energy
- Korea Evaluation Institute of Industrial Technology (KEIT) [20124010203250] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2009-0086642] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Air-blowing proton exchange membrane fuel cells (PEMFCs) have been developed as a potential new power source for portable electronic devices. However, air-blowing PEMFCs show lower performance than compressed-air PEMFCs because of their adverse operating conditions. In this study, the effects of the cathode channel size and operating conditions on the performance of the air-blowing PEMFC were analyzed. At the normal operating temperature, the performance of the air-blowing PEMFC improved with the decrease in the cathode channel size. However, at a low operating temperature and low fan voltage, massive flooding limits the decrease in the cathode channel size. In addition, water management in the air-blowing PEMFC was investigated by analyzing ohmic resistance. The transition current density between the humidification and the flooding region decreased with decreasing cathode channel size and operating temperature. (C) 2013 Elsevier Ltd. All rights reserved.
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