Chockkalingam Karuppaiah

Bio: Chockkalingam Karuppaiah is an academic researcher from Plug Power. The author has contributed to research in topics: Anode & Proton exchange membrane fuel cell. The author has an hindex of 5, co-authored 10 publications receiving 156 citations.

fuel cell electrode

Abstract: A composition includes a catalyst, and a non-electrolytic material different than the catalyst, wherein the catalyst and the non-electrolytic material compose a fuel cell electrode.

Hydrophilic anode gas diffusion layer

Abstract: The invention provides an anode gas diffusion layer for a fuel cell and methods for preparation and use thereof. In particular, a hydrophilic anode gas diffusion layer promotes water transfer through the fuel cell. As an example, in one aspect, the invention provides a fuel cell system, including a fuel cell with an anode gas diffusion layer. The anode gas diffusion layer has a contact angle with water less than 140° (e.g., in some cases less than 120° or less than 100°). In another aspect, the invention provides a gas diffusion layer for a hydrogen electrode of a PEM fuel cell that includes a carbon fiber media having a water contact angle of less than 140°.

Reduction of SOFC anodes to extend stack lifetime

Abstract: One embodiment of the invention provides a method of operating a solid oxide fuel cell, including providing a solid oxide fuel cell comprising an anode electrode containing nickel, and electrochemically reducing an anode side of the fuel cell. Another embodiment of the invention provides a method of operating a solid oxide fuel cell, including providing a solid oxide fuel cell comprising an anode electrode containing nickel, periodically operating the fuel cell to generate electricity, and reducing an anode side of the fuel cell between electricity generation operation periods of the fuel cell.

Sofc system with selective co2 removal

Abstract: A system and method in which a high temperature fuel cell stack exhaust stream is recycled back into the fuel inlet stream of the high temperature fuel cell stack. The recycled stream may be sent to a carbon dioxide separation device which separates carbon dioxide from the fuel exhaust stream. The carbon dioxide separation device may be a carbon dioxide trap, an electrochemical carbon dioxide separator, or a membrane separator. A water separator may be used in conjunction with the carbon dioxide separation device or used separately to continuously remove water from the recycled stream.

Carbon monoxide filter

Abstract: A fuel cell system includes a fuel cell having an electrode, and an electrochemical cell having a device. The electrochemical cell includes a cathode, an anode in fluid communication with the electrode of the fuel cell, and an electrolyte in electrical communication with the cathode and the anode. The device is in electrical communication with the anode of the electrochemical cell and adapted to vary the potential of the anode. The electrochemical cell and the device are capable of reducing an amount of carbon monoxide that enters the fuel cell system.

Fuel cell and fuel cell stack

Abstract: A fuel cell (10) includes separators (28) sandwiching electrolyte electrode assemblies (26). Each of the separators (28) includes a fuel gas supply section (32), four first bridges (34) extending radially outwardly from the fuel gas supply section (32), sandwiching sections (36) connected to the first bridges (34), and flow rectifier members (74) provided between adjacent sandwiching sections (36). A fuel gas supply passage (30) extends through the center of the fuel gas supply section (32). Each of the sandwiching sections (36) has a fuel gas channel (40) and an oxygen-containing gas channel (54). The flow rectifier members (74) rectify the flow of the oxygen-containing gas supplied from the oxygen-containing gas supply passage (68) to the electrolyte electrode assemblies (26).

Ion conductive block copolymers

Abstract: This invention relates to ion conductive copolymers which are useful in forming polymer electrolyte membranes used in fuel cells.

Membrane-electrode assembly for fuel cell and fuel cell system comprising same

Abstract: A membrane-electrode assembly constructed with an anode and a cathode facing each other, and a polymer electrolyte membrane disposed therebetween. At least one of the anode and the cathode includes an electrode substrate that includes a carbon fiber based sheet coated with micro-carbons and a catalyst layer disposed on the electrode substrate with the micro-carbons contacting the catalyst layer.

Solid high polymer type cell assembly

Abstract: A solid high polymer type cell assembly (10), comprising first and second unit cells (12, 14) arranged parallel with each other so that the electrode faces thereof are positioned parallel with each other, wherein an oxidizer gas flow passage (32) is allowed to linearly communicate from the first unit cell (12) to the second unit cell (14) through a first oxidizer gas passage (38) in the first unit cell (12), an oxidizer gas communication passage (40) in a connection flow passage member (16), and an oxidizer gas passage (42) in the second unit cell (14)

Anode with remarkable stability under conditions of extreme fuel starvation

Abstract: A solid oxide fuel cell (SOFC) includes a cathode electrode, a solid oxide electrolyte, and an anode electrode having a first portion and a second portion, such that the first portion is located between the electrolyte and the second portion The anode electrode comprises a cermet comprising a nickel containing phase and a ceramic phase The first portion of the anode electrode contains a lower porosity and a lower ratio of the nickel containing phase to the ceramic phase than the second portion of the anode electrode