Study on operational aspects of a passive direct methanol fuel cell incorporating an anodic methanol barrier |
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| Affiliation: | 1. College of Electronic and Information Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China;2. MEMS Center, Harbin Institute of Technology, Harbin, 150001, China;1. MEMS Center, Harbin Institute of Technology, Harbin 150001, China;2. Key Laboratory of Micro-Systems and Micro-Structures Manufacturing, Ministry of Education, Harbin 150001, China;1. Department of Mechanical Engineering, Visvesvaraya National Institute of Technology, Nagpur, India;2. Department of Mechanical Engineering, Birla Institute of Technology and Science, Pilani-Dubai Campus, Dubai, United Arab Emirates;1. School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou 510640, China;2. School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA |
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| Abstract: | This paper presents an investigation concerning the effects of operating conditions on the performance of a passive direct methanol fuel cell (DMFC). A self-developed porous metal fiber sintered plate (PMFSP) is used as the methanol barrier between the fuel reservoir and current collector at the anode in order to alleviate the effect of methanol crossover. The effectiveness of using this method is validated. A series of operating conditions such as operating orientation, methanol concentration, ambient temperature, forced air convection and dynamic load are evaluated. Results show that the use of a PMFSP promotes a higher cell performance during vertical operation than horizontal orientation. The effect of methanol concentration depends on the PMFSP porosity. A relatively lower porosity is favorable for high-concentration operation. The cell performance gets improved when increasing the ambient temperature and adopting forced air supply at the cathode. Compared with the traditional structure, the use of a PMFSP makes the fuel cell insensitive to the change of blowing intensity. In addition, the dynamic characteristics of the PMFSP-based passive DMFC are also reported. |
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| Keywords: | Direct methanol fuel cell Passive Operating condition Methanol barrier Operating orientation Forced air convection |
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