Plug Power Inc.

Uriel M Oko

James Howard Kralick

Wieslaw J Zielinski

Gregory Muchnic

Nicholas Childs

Christopher S Dannehy

A technique includes applying a vacuum to a manifold of a fuel cell stack to remove accumulated water from the stack. As an example, a fuel cell system may include a fuel cell stack that is capable of accumulating water. A vacuum system of the fuel cell system applies a vacuum to the fuel cell stack to remove at least some of the accumulated water.

Fuel cell stack rejuvenation

Methods and kits for removing contaminants from fuel cells are disclosed. The methods include passing a removal substance through a flow channel in the cell, where the substance is selected to remove the contaminant. The contaminants can be, e.g., metallic ions or organic compounds, and the removal substance can be, e.g., acidic or alkaline solutions, chelating agents, or oxidants.

Methods and kits for decontaminating fuel cells

The invention relates to a fuel cell system having membranes that are used to humidify reactant gases. The membranes effectively prevent contamination of the reactant gases during humidification. The membranes can be used to purify the reactant gases during humidification.

Fuel cell system having humidification membranes

An assembly includes fuel cell plates and a valve. The fuel cell plates are arranged to form a fuel cell, and the plates establish a manifold passageway to communicate a fluid for the fuel cell. At least one of the plates includes flow channels to communicate the fluid through the fuel cell. The valve selectively regulates communication of the fluid between the manifold passageway and the channels.

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Glenmont, NY, United States of America

Uriel M Oko