Flow-field for a PEM fuel cell having a plurality of flow-channels including flow-restrictors strategically located throughout to achieve desired pressure differentials between fuel and oxidant supply and exhaust manifolds, and between adjacent flow-channels. A preferred flow-restrictor comprises a constriction in the flow channel that has a cross-sectional area that is less than the cross-sectional area of the flow-channel.

 
Web www.patentalert.com

< Process for separating liquid hydrocarbons from a particulate fisher-tropsch catalyst

< Hemocompatible polymer systems & related methods

> Method for cell culture

> Magnetic enzyme detection techniques

~ 00290