Micro fuel cells polymer electrolyte membranes

Micro fuel cells Polymer electrolyte membrane fuel cells Proton exchange membrane fuel cells pPEMFC... 

Typically, micro fuel cells use methanol as fuel alfhough hydrogen-fed micro fuel cells have also been developed. The choice of the type of fuel cell to use in portable devices may be limited to low-temperature fuel cells such as PEMFC (proton exchange membrane fuel cell/polymer electrolyte membrane fuel cell) and DMFC. However, micro reformed methanol fuel cells and miniature SOFCs have also been developed. 

Because of its lower temperature and special polymer electrolyte membrane, the proton exchange membrane fuel cell (PEMFC) is well-suited for transportation, portable, and micro fuel cell applications. But the performance of these fuel cells critically depends on the materials used for the various cell components. Durability, water management, and reducing catalyst poisoning are important factors when selecting PEMFC materials. 

Keywords polymer electrolyte membrane fuel cell (PEMFC), porous silicon, silicon electrodes, micro fuel cells. 

Fuel cell researchers have also investigated other reference electrodes, such as a pseudo-reference electrode constructed by inserting a micro-sized carbon filament between two polymer electrolyte membranes [73], The main advantage of pseudoreference electrodes is their easy implementation, although one disadvantage is that their DC potential is unknown. However, this DC potential may not be that critical because EIS measurements mainly rely on the AC perturbation signal from which the impedance is calculated. 

Soboleva T, Zhao X, Malek K, Xie Z, Navessin T, Holdcroft S (2010) On the micro-, meso-, and macroporous structures of polymer electrolyte membrane fuel cell catalyst layers. ACS Appl Mater Interfaces 2 375-384... 

Micro-Polymer Electrolyte Membrane Fuel Cells ([JI.PEMFC) and Their Challenges... 

Chisaka M, Daiguji H. Effect of glycerol on micro/nano structures of catalyst layers in polymer electrolyte membrane fuel cells. Electrochim Acta 2006 51(23) 4828-33. 

M. Wang, K.W. Feindel, S.H. Bergens, R.E. Wasybshen, In situ quantibcation of the in-plane water content in the NAFION membrane of an operating polymer-electrolyte membrane fuel cell using H micro-magnetic resonance imaging experiments, J. Power Sources 195 (2010) 7316—7322. 

Metal foam (see, for example. Figure 3.5) has already been discussed in the context of heat exchangers. Micro-reactors, highly relevant to the subject of small fuel cells, have also been introduced in earlier chapters. The construction of metal foam based methanol steam micro-reformers to generate hydrogen for polymer electrolyte membrane fuel cells (PEMFCs) has been reported and in Guangzhou, Chinese researchers have looked at laminated micro-reactors in which copper-based catalysts have been supported by metal foams (see Figure 11.11 Yu et al., 2007). 

James JP (2012) Micro-computed tomography reconstruction and analysis of the porous transport layer in polymer electrolyte membrane fuel cells. Master, Queen s University, Kingston... 

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