Phillips 66 Company

Georgia Tech Research Corporation

U.S. Department of Energy

Mingfei Liu

Ying Liu

Ting He

Meilin Liu

David M Bierschenk

Ye Lin

Ze Liu

Wayne A Surdoval

Lane Wilson

Lei Yang

Michael Keane

Lifang Nie

Mark Jensen

David Spencer Mebane

A method of producing an infiltrated solid oxide fuel cell (SOFC) layer. The method begins by infiltrating a solution containing a solute into a SOFC layer to produce a primary SOFC layer. The primary SOFC layer is then dried in a heated environment, wherein the heated environment ranges in temperature from about 25&#xb0; C. to about 100&#xb0; C. to produce a dry primary SOFC layer. The dry primary SOFC layer is then cooled at a rate less than about 5&#xb0; C./min to room temperature to produce a cooled primary SOFC layer. The cooled primary SOFC layer is then heated to a temperature greater than 500&#xb0; C. then quenching to a temperature from about 10&#xb0; C. to about 30&#xb0; C. to produce an infiltrated SOFC layer.

Method for producing an infiltrated solid oxide fuel cell layer

A solid oxide fuel cell comprising an anode, an electrolyte, and a cathode comprising PrCoO, wherein the ratio of x and y are 1:1.

Cathode for solid oxide fuel cell

A method of fabricating a SSZ/SDC bi-layer electrolyte solid oxide fuel cell, comprising the steps of: fabricating an NiO-YSZ anode substrate from a mixed NiO and yttria-stabilized zirconia by tape casting; sequentially depositing a NiO-SSZ buffer layer, a thin SSZ electrolyte layer and a SDC electrolyte on the NiO-YSZ anode substrate by a particle suspension coating or spraying process, wherein the layers are co-fired at high temperature to densify the electrolyte layers to at least about 96% of their theoretical densities; and painting/spraying a SSC-SDC slurry on the SDC electrolyte to form a porous SSC-SDC cathode. A SSZ/SDC bi-layer electrolyte cell device and a method of using such device are also discussed.

Electrolyte formation for a solid oxide fuel cell device

A device comprising a first solid oxide fuel cell and a second solid oxide fuel cell. The first solid oxide fuel cell comprises a first anode, a first cathode and a first electrolyte, wherein the first electrolyte is positioned between and connected to the first anode and the first cathode. The second solid oxide fuel cell comprises a second anode, a second cathode and a second electrolyte, wherein the second electrolyte is positioned between and connected to the second anode and the second cathode. In this device the cathode distance between the first cathode and the second cathode is less than the anode distance between the first anode and the second anode.

Solid oxide fuel cell stack design

The present embodiment describes a method of forming different layers in a solid oxide fuel cell. The method begins by preparing slurries which are then delivered to a spray nozzle. The slurries are then atomized and sprayed subsequently onto a support to produce a layer which is then dried. In this embodiment different layers can comprise an anode, an electrolyte and a cathode. Also the support can be a metal or a metal oxide which is later removed.

Formation of solid oxide fuel cells by spraying

A solid oxide fuel cell comprising a cathode, an electrolyte, a functional layer and an anode support. The anode support comprises A-B-C: A is a nitrate, an oxide, a salt or a carbonate selected from the group of: alkali, alkaline oxide, alkaline earth metal or combinations thereof, B is selected from the group of: Fe, Ni, Cu, Co or combinations thereof, and C is selected from the group of: PSZ, YSZ, SSZ, SDC, Ce doped SSZ, GDC or combinations thereof. In the solid oxide fuel cell A ranges from about 0 to about 20 wt % of the anode support, B ranges from about 0.1 to about 70 wt % of the anode support and C ranges from about 0.1 to about 60 wt % of the anode support.

Modified solid oxide fuel cell

A solid oxide fuel cell comprising an electrolyte, an anode and a cathode. In this fuel cell at least one electrode has been modified with a promoter using gas phase infiltration.

Gas phase modification of solid oxide fuel cells

A solid oxide fuel cell comprising an electrolyte, an anode and a cathode. In this fuel cell at least one electrode has been modified with a promoter using liquid phase infiltration.

Liquid phase modification of solid oxide fuel cells

The present invention discloses an integrated SOFC system powered by natural gas. Specifically, a SOFC-O cell is combined with a SOFC-H cell so as to take advantage of the high operating temperature and steam reforming capabilities of the SOFC-O cell as well as the higher fuel conversion efficiency of the SOFC-H cell.

Integrated natural gas powered SOFC systems

The present invention relates to a novel method for preparing a BZCYYb material to be used in a solid oxide fuel cell. In particular, the method comprises mixing particular nano-sized and micro-sized ingredients and the size selection provides greatly improved performance characteristics of the resulting material. In particular, barium carbonate powder, zirconium oxide powder having particle diameters in the nanometer range, and cerium oxide powder having particle diameter in the micrometer range are used together with ytterbium oxide powder, and yttrium oxide powder.

Optimization of BZCYYb synthesis

Solid-oxide fuel cells include an electrolyte and an anode electrically coupled to a first surface of the electrolyte. A cathode is provided, which is electrically coupled to a second surface of the electrolyte. The cathode includes a porous backbone having a porosity in a range from about 20% to about 70%. The porous backbone contains a mixed ionic-electronic conductor (MIEC) of a first material infiltrated with an oxygen-reducing catalyst of a second material different from the first material.

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Bartlesville, OK, United States of America

Mingfei Liu