Configuration Design And Fabrication Analysis Of Micro Direct Methanol Fuel Cell

With the increasing demand of power sources and rapid development of MEMS technology, micro direct methanol fuel cell (μDMFC) is becoming the research hotspot due to its great application prospect in the future.It is well known that several technological difficulties such as low electrochemistry reaction and removal of anode product, etc. In this paper, a anode mass transport model of theμDMFC was proposed, and the structure parameters and characteristics of mass transport of a singleμDMFC were analyzed systematically. Based on the modeling results, two material-based singleμDMFCs were developed. Moreover, an air-breathingμDMFC stack consisting of ten single cells was successfully developed.A anode mass transport model was established in this work. The results show that the structure of anode flow field influenced cell performance as well as the removal of CO2. A silicon-basedμDMFC was proposed. anode current collectors with different structures and parameters were microfabricated by MEMS bulk silicon technology. The peak power density can reach 13.2 mW/cm~2 was accord with the simulation. Meanwhile, in this work, the stainless steel current collectors were microfabricated employing micro-stamping and plating technologies,which have strong resistance against chemical corruption. the current collectors were successfully assembled with other cell components. The cell performance and mass tranport were evaluated by different measure methods, the peak power density can reach 26.95 mW/cm~2.Based on the results of metal-based singleμDMFCs, an novel air-breathing metal-basedμDMFC stack which was successfully applied to power micro motor was proposed.