Title :
A silicon-based micro direct methanol fuel cell with microblocks in anode structure
Author :
Zhang, Qian ; Wang, Xiaohong ; Zhong, Lingyan ; Zhou, Yan An ; Qiu, Xinping ; Liu, Litian
Author_Institution :
Tsinghua Univ., Beijing
Abstract :
This paper presents a micro direct methanol fuel cell (muDMFC) featured by the novel anode structure with microblocks, which drive the fuel from the laminar flow toward the turbulent flow. Both the muDMFC with microblocks and the regular serpentine-channel one are fabricated by using MEMS technologies and reliable polydimethylsiloxane (PDMS) assembly method. The performance of the prototype is measured and is compared with that of the regular muDMFC. Experimental results show that the muDMFC with microblocks has generated a maximum power density of 8.08 mW/cm2, which is much higher than that of the regular muDMFC at the value of 3.87 mW/cm2, using 2M methanol solution at room temperature.
Keywords :
direct methanol fuel cells; electrochemical electrodes; elemental semiconductors; micromechanical devices; polymers; silicon; MEMS technologies; Si; laminar flow; methanol solution; microblock anode structure; polydimethylsiloxane assembly method; serpentine-channel fabrication; silicon-based microdirect methanol fuel cell; temperature 293 K to 298 K; turbulent flow; Anodes; Assembly; Biomembranes; Electrodes; Electrons; Fuel cells; Methanol; Micromechanical devices; Protons; Temperature;
Conference_Titel :
Micro Electro Mechanical Systems, 2008. MEMS 2008. IEEE 21st International Conference on
Conference_Location :
Tucson, AZ
Print_ISBN :
978-1-4244-1792-6
Electronic_ISBN :
1084-6999
DOI :
10.1109/MEMSYS.2008.4443820
