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Gore Enterprise Holdings, Inc.

Mahesh Murthy

John W Van Zee

Woo-kum Lee

James H Arps

Carlos Alberto Cavalca

Carlos Cavalca

An electrochemical fuel cell system adapted for maintaining the efficient production of electrical power. The system comprises a fuel supply containing a hydrogen rich gaseous fuel for delivery to a fuel cell. A fuel supply conduit connects the fuel supply and the fuel cell for delivering a fuel stream of the hydrogen rich gaseous fuel to the fuel cell. An impurity sensor is carried by the fuel supply conduit for detecting impurities in the fuel stream prior to the impurities entering the fuel cell. A heating mechanism is provided in communication with the impurity sensor being operatively associated with the fuel cell for changing the temperature of the fuel cell. The heating mechanism raises the temperature of the fuel cell from a normal operating temperature to an elevated operating temperature when the impurity sensor detects impurities in the fuel stream to prevent the impurities from interfering with fuel cell efficiency.

Method and system for improving the performance of a fuel cell

An electrochemical fuel cell system comprising a fuel supply of hydrogen rich gaseous fuel for delivery to a fuel cell. A fuel supply conduit connects the fuel supply and the fuel cell for delivering a fuel stream of the hydrogen rich gaseous fuel to the fuel cell. An impurity sensor is carried by the fuel supply conduit for detecting impurities in the fuel stream prior to the impurities entering the fuel cell. A pressure adjusting mechanism is provided in communication with the impurity sensor being operatively associated with the fuel cell for changing the pressure of the fuel cell. The pressure adjusting mechanism raises the pressure of the fuel cell from a normal operating pressure to an elevated operating pressure when the impurity sensor detects impurities in the fuel stream to prevent the impurities from interfering with fuel cell efficiency.

An electrode-membrane combination for use in a fuel cell and providing improved power outputs and resistance to poisoning. Multiple embodiments are described which generally involve use of a vapor deposited zone or layer of one or more catalytically active metals. Vapor deposition can be carried out by, for example, sputtering or physical vapor deposition.

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Elkton, MD, United States of America

Mahesh Murthy