Shruti Ajay Gupta

20100209805, Aug 19, 2010

Oct 24, 2006

12/445741

Shruti Modi Gupta - Windsor CT, US
Tommy Skiba - East Hartford CT, US
Sathya Motupally - Milford CT, US

UTC POWER CORPORATION - South Windsor CT

H01M 8/10

429483

A membrane electrode assembly () includes an anode (); a cathode (), a membrane () between the anode and the cathode; and a protective barrier layer () between the membrane and at least one of the anode and the cathode, the protective barrier layer being adapted to restrict migration of at least one of oxygen and hydrogen from the anode and/or cathode to the membrane. The barrier layer keeps a plane of polarized charge (Xo) outside of the membrane and helps avoid formation of disconnected catalyst.

20090202870, Aug 13, 2009

May 30, 2006

12/226930

Robert M. Darling - South Windsor CT, US
Shruti Modi Gupta - Windsor CT, US

H01M 8/04
H01M 8/10

429 13, 429 33

Fuel cells () include unitized electrode assemblies () having a non-perfluorinated hydrocarbon ionomer exchange membrane () with anode and cathode catalysts () disposed on opposite sides thereof. Adjacent the catalysts, respective optional sublayers () may be supported by corresponding gas diffusion layers (), with adjacent porous, hydrophilic, water transferring reactant gas flow field plates () having respective fuel () and oxidant () reactant gas flow field channels. Water channels ()hydrate the membrane (), clear the product water from the cathode (), flush peroxide radicals, and may also cool the fuel cells. Improved performance () (higher voltage at higher current densities) is achieved along with elimination of a propensity for degradation from peroxide decomposition products resulting from oxygen solubility of perfluorinated membranes. Platinum/ruthenium alloy anode catalysts improve performance without degradation which occurs with perfluorinated membranes.