A silicon‐based micro direct methanol fuel cell stack with a serial flow path design |
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| Authors: | Jianyu Cao Juan Xu Zhidong Chen Wenchang Wang Qinghong Huang Zhiqing Zou |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Changzhou University, , Changzhou, 213164 China;2. Energy Science and Technology Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, , Shanghai, 200050 China;3. Key Laboratory for Solar Cells and Energy Storage Technology of Jiangsu Province, , Changzhou, 213164 China |
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| Abstract: | A 6‐cell silicon‐based micro direct methanol fuel cell (μDMFC) stack utilized the serial flow path design was developed. The effect of the structure of flow path on the performance of the stack was investigated using polarization characterization and electrochemical impedance analysis. Further, the voltage distribution for individual cells under different current density was discussed. The results indicated that the μDMFC stack with the serial flow path design exhibited better performance than that utilized the parallel flow path due to uniform mass transfer of methanol as a result of the use of the serial flow path. Such a μDMFC stack generates a peak output power of ca. 187 mW, corresponding to an average power density of ca. 21.7 mWcm‐2, and exhibits a steady‐state power output for more than 100 h. Copyright © 2011 John Wiley & Sons, Ltd. |
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| Keywords: | micro direct methanol fuel cell flow path fuel distribution voltage distribution mass transfer |
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