Microfluidic oxidant streams flow

Microfluidic electrochemical cells, as shown in Fig. 1.1, employ one laminar stream that contains the fuel (or first reactant) and a second laminar stream that contains the oxidant (or second reactant). As the fuel and oxidant streams flow in a... 

Micro fuel cell designs without polymeric membranes can overcome some PEM-related issues such as fuel crossover, anode dry-out or cathode flooding. In these membraneless laminar flow-based fuel cells (LF-EC) two or more liquid streams merge into a single microfluidic channel. The stream flows over the anode and the cathode electrodes placed on opposing side walls within the channel. The reaction of fuel and oxidant takes place at the electrodes while the two liquid streams and their liquid-liquid interface provide the necessary ionic transport [122,123]. 

Fig. 21 The fuel cell system uses a Y-shaped microfluidic channel where two liquid streams containing fuel and oxidant merge and flow between catalyst-covered electrodes without mixing.

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